FR2502935A1 - Diathermic knife for coagulating tissues - has monitoring current added to HF coagulating current in order to control end of operation as function or resistance of coagulating tissues - Google Patents

Diathermic knife for coagulating tissues - has monitoring current added to HF coagulating current in order to control end of operation as function or resistance of coagulating tissues Download PDF

Info

Publication number
FR2502935A1
FR2502935A1 FR8106454A FR8106454A FR2502935A1 FR 2502935 A1 FR2502935 A1 FR 2502935A1 FR 8106454 A FR8106454 A FR 8106454A FR 8106454 A FR8106454 A FR 8106454A FR 2502935 A1 FR2502935 A1 FR 2502935A1
Authority
FR
France
Prior art keywords
current
coagulation
tissues
coagulating
generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8106454A
Other languages
French (fr)
Other versions
FR2502935B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR8106454A priority Critical patent/FR2502935B1/en
Publication of FR2502935A1 publication Critical patent/FR2502935A1/en
Application granted granted Critical
Publication of FR2502935B1 publication Critical patent/FR2502935B1/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00875—Resistance or impedance

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Otolaryngology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The device is used to coagulate tissues and operates with a monitor current (ic) is applied in addition to the high frequency coagulating current. The monitoring current is very low, calibrated and clearly identifiable from the coagulating current. During the coagulation operation, the monitoring current magnitude, which is a function of the resistance of the coagulating tissues, is measured. When the magnitude of the monitoring current reaches a lower predetermined limit, the coagulation operation is automatically cut off. The diatermic knife can be mfd. as a monopolar knife comprising a thin active electrode (3) applied to the tissues to be coagulated and a large surface electrode (7) placed in contact with the patient. The device can also be manufactured as a bipolar knife comprising two thin active electrodes.

Description

Procédé et dispositif de contrôle de la coagulation de tissus à l'aide d'un courant a haute fréquence.Method and device for controlling tissue coagulation using a high frequency current

La présente invention se rapporte un procédé de con trôle de la coagulation de tissus à l'aide d'un courant à haute fréquence. The present invention relates to a method of controlling tissue coagulation using a high frequency current.

Le fonctionnement des bistouris électriques est basé sur le principe que si on applique un courant à haute fréquence au corps d'un patient, il se produit une élévation de température au niveau de chacune des électrodes d'application du courant; l'élévation de température est d'autant plus importante que la surface de contact de lfelectrode est petite. On utilise un courant à haute fréquence pour éviter toute excitation faradique qui se produirait si la fréquence était suffisamment basse pour être ressentie par le patient. The operation of the electrical lancets is based on the principle that if a high frequency current is applied to the body of a patient, a rise in temperature occurs at each of the current application electrodes; the rise in temperature is all the more important as the contact area of the electrode is small. A high frequency current is used to avoid any faradic excitation that would occur if the frequency was low enough to be felt by the patient.

Si l'une des électrodes utilisées est très fine alors que l'autre est de grande surface, l'élévation de température sera considérable au niveau de l'électrode fine et pratiquement inexistante au niveau de l'électrode de grande surface. On obtient ainsi, au niveau de l'électrode fine, un effet de coupe ou un effet de coagulation des tissus, selon la puissance appliquée. If one of the electrodes used is very fine while the other is large, the temperature rise will be considerable at the thin electrode and virtually nonexistent at the large surface electrode. Thus, at the level of the fine electrode, a cutting effect or a coagulation effect of the tissues is obtained, depending on the power applied.

Il est également possible d'obtenir un effet d'électrocoagulation en reliant les deux pôles d'un générateur de courant à haute fréquence deux électrodes fines appliquées contre le tissu å coaguler dans la zone opératoire. En géne- ral, ces deux électrodes sont constituées par les deux branches isolées d'une pince, la coagulation étant limitée à la partie des tissus qui se trouvent entre les deux becs de la pince. It is also possible to obtain an electrocoagulation effect by connecting the two poles of a high frequency current generator with two thin electrodes applied against the tissue to be coagulated in the operating zone. In general, these two electrodes are constituted by the two isolated branches of a clamp, the coagulation being limited to the part of the tissues which are between the two jaws of the clamp.

La puissance nécessaire pour ce procédé de coagulation dite "bipolaire" est nettement plus faible que celle nécessaire pour la coagulation dite "monopolaire", utilisant une électrode de grande surface dite électrode indifférente et une électrode fine dite électrode active. The power required for this so-called "bipolar" coagulation process is significantly lower than that required for so-called "monopolar" coagulation, using a large-area electrode called an indifferent electrode and a thin electrode called an active electrode.

Deux facteurs déterminent la qualité de la coagulation, savoir l'intensité du courant, d'une part, et le temps de passage du courant, d'autre part. Jusqu'S présent, l'opérateur effectue le dosage de la puissance et du temps de coagulation. Two factors determine the quality of the coagulation, namely the intensity of the current, on the one hand, and the time of passage of the current, on the other hand. Until now, the operator performs the dosing of the power and the coagulation time.

Or, en particulier des variations du temps de coagulation conduisent à des coagulations irrégulières, certaines étant trop fortes et d'autres trop faibles.In particular, variations in coagulation time lead to irregular coagulation, some being too strong and others too weak.

La présente invention a pour objet un procédé de contrôle de la coagulation aussi bien "monopolaire" que "bipolaire" à l'aide de courants à haute fréquence de manière qu'indépendam- ment de l'action de l'opérateur, toutes les coagulations soient de qualité égale et optimale. The subject of the present invention is a method of controlling both monopolar and bipolar coagulation by means of high frequency currents so that, independently of the action of the operator, all coagulation occurs. be of equal and optimal quality.

L'invention a également pour objet un dispositif pour la mise en oeuvre de ce procédé. The invention also relates to a device for implementing this method.

Suivant l'invention, on superpose au courant de coagulation à haute fréquence un très faible courant de contrôle calibré nettement identifiable par rapport au courant de coagulation. Ce courant de contrôle circule donc, comme le courant de coagulation à haute fréquence, soit entre une électrode fine dite électrode active, appliquée contre le tissu à coaguler dans la zone opératoire d'un patient et une électrode de grande surface-dite électrode indifférente en contact avec le patient en dehors de la zone opératoire, soit entre deux électrodes fines dites actives appliquées contre le tissu à coaguler dans la zone opératoire d'un patient.On mesure la variation de l'intensité de ce courant de contrôle pour déclencher l'arrêt automatique de la coagulation des que l'intensité du courant de contrôle, qui est fonction de la résistance des tissus en cours de coagulation, atteint une valeur limite inférieure prédéterminée. According to the invention, a very small calibrated control flow which is clearly identifiable with respect to the coagulation stream is superimposed on the high-frequency coagulation stream. This control current therefore circulates, like the high-frequency coagulation current, either between a thin electrode called an active electrode, applied against the tissue to be coagulated in the operating zone of a patient, and a large surface electrode-the so-called indifferent electrode. contact with the patient outside the operating zone, or between two so-called active electrodes applied against the tissue to be coagulated in the operating zone of a patient. The variation of the intensity of this control current is measured to trigger the automatic cessation of coagulation as the intensity of the control current, which is a function of the resistance of the tissues during coagulation, reaches a predetermined lower limit value.

En effet, la résistance des tissus à coaguler est faible au moment où la coagulation commence et cette résistance augmente progressivement au fur et a mesure que les tissus se dessèchent sous l'effet de l'échauffement dA au passage du courant de coagulation. Par conséquent, l'intensité du courant de contrôle superposée au courant de coagulation à haute fréquence est fonction de la résistance des tissus en cours de coagulation, ce qui permet de déclencher l'arrêt automatique de la coagulation lorsque la résistance des tissus atteint une valeur prédéterminée.Le rôle de l'opérateur se borne ainsi a déclencher le début de la coagulation, après avoir placé l'électrode active ou les électrodes actives l'endroit désiré, la coagulation s'arrêtant automatiquement dès qu'elle atteint une valeur optimale prédéterminée. Indeed, the resistance of the tissues to be coagulated is low at the moment when the coagulation begins and this resistance increases progressively as the tissues dry out under the effect of the heating of A at the passage of the coagulation stream. Consequently, the intensity of the control current superimposed on the high-frequency coagulation current is a function of the resistance of the coagulating tissues, which triggers the automatic cessation of coagulation when the tissue resistance reaches a value. The role of the operator is thus limited to triggering the start of coagulation, after having placed the active electrode or the active electrodes at the desired location, the coagulation stopping automatically as soon as it reaches a predetermined optimum value. .

Le dispositif pour la mise en oeuvre du procédé de con trôle conforme à l'invention comprend un générateur de courant de contrôle monté en parallèle avec le générateur de courant de coagulation à haute fréquence, un dispositif de mesure de l'intensité du courant de controle, monté en série avec ledit générateur de courant de contrôle, un dispositif de filtrage entre le circuit à haute fréquence et le circuit à courant continu ou basse fréquence, et un dispositif d'arrêt du générateur de courant à haute fréquence commande par ledit dispositif de mesure lorsque l'intensité du courant de contrôle atteint une valeur limite inférieure prédéterminée. The device for carrying out the control method according to the invention comprises a control current generator connected in parallel with the high frequency coagulation current generator, a device for measuring the intensity of the control current. , connected in series with said control current generator, a filtering device between the high frequency circuit and the DC or low frequency circuit, and a device for stopping the high frequency current generator controlled by said device measured when the intensity of the control current reaches a predetermined lower limit value.

En se référant au dessin annexé, on va décrire ci-après un mode de réalisation illustratif et non limitatif d'un dispositif de contrôle conforme a l'invention dans son application au contrôle de la coagulation monopolaire, l'aide d'une électrode active et d'une électrode indifférente. With reference to the appended drawing, an illustrative and nonlimiting embodiment of a control device according to the invention in its application to the control of monopolar coagulation will be described below, using an active electrode. and an indifferent electrode.

Sur le schéma de la figure unique du dessin, un géné- rateur de courant à haute fréquence 1 est relié, par l'intermédiaire d'un transformateur 2, une électrode 3 dont le conducteur d'alimentation 4 comporte une fiche 5 branchée de façon amovible sur une douille 6 reliée 8 une borne du secondaire du transformateur 2, dont l'autre borne est mise à la masse. Une électrode 7 de grande surface placée sur une table d'opération 8 est reliée par un conducteur 9 se terminant par une fiche 10, de façon amovible ê une autre douille 11 qui est mise la masse.Un patient 12 sur lequel doit être pratiqué une intervention impliquant de la chirurgie électrique (coupe de tissus par bistouri électrique) et/ou de l'électrocoagulation repose sur la table 8de manière à se trouver en bon contact avec l'électrode 7. In the diagram of the single figure of the drawing, a high-frequency current generator 1 is connected, via a transformer 2, to an electrode 3 whose feed conductor 4 comprises a plug 5 connected in such a way removable on a socket 6 connected to 8 a secondary terminal of the transformer 2, the other terminal is grounded. An electrode 7 of large surface placed on an operating table 8 is connected by a conductor 9 terminating in a plug 10, in a removable manner to another socket 11 which is fitted to the mass. A patient 12 on which a intervention involving electrical surgery (cutting of tissues by electrocautery) and / or electrocoagulation is based on the table 8 so as to be in good contact with the electrode 7.

La commande du générateur à haute fréquence 1 s'effectue, selon qu'il s'agit de couper ou de coaguler, à l'aide d'une pédale de commande de bistouri 13 ou d'une pCdale de commande de coagulation 14 reliées par deux conducteurs respectivement 15 et 16 au générateur 1. The control of the high frequency generator 1 is effected, depending on whether it is a question of cutting or coagulating, by means of a lancet control pedal 13 or a coagulation control paddle 14 connected by two conductors respectively 15 and 16 to the generator 1.

Le dispositif conforme à l'invention de contrôle de l'électrocoagulation comprend un générateur de courant de contrôle 17 monté en parallèle avec le secondaire du transformateur 2, de manière que courant ic de très faible intensité, calibré et facilement identifiable, du générateur 17 soit superposé au courant IHF du générateur 1. Un dispositif de mesure 18 de l'intensité du courant ic du générateur 17 est monté en série avec ce dernier. Un dispositif de filtrage 19 représenté comme comprenant une impédance 20 et un condensateur 21 assure la séparation des deux courants IHF et ic pour permettre une mesure précise du courant ic et éviter la destruction du dispositif de mesure 18 par le courant à haute fréquence. The device according to the invention for controlling the electrocoagulation comprises a control current generator 17 connected in parallel with the secondary of the transformer 2, so that the current ic of very low intensity, calibrated and easily identifiable, of the generator 17 is superimposed on the IHF current of the generator 1. A device 18 for measuring the intensity of the current ic of the generator 17 is connected in series with the latter. A filtering device 19 represented as comprising an impedance 20 and a capacitor 21 ensures the separation of the two currents IHF and ic to allow accurate measurement of the current ic and to avoid the destruction of the measuring device 18 by the high frequency current.

Le dispositif de mesure 18 est relié à un relais 22 actionnant un contact 23 qui commande l'ouverture et la fermeture du conducteur 16 reliant la pédale de commande de coagulation 14 au générateur de courant å haute fréquence 1. The measuring device 18 is connected to a relay 22 actuating a contact 23 which controls the opening and closing of the conductor 16 connecting the coagulation control pedal 14 to the high-frequency current generator 1.

Un interrupteur manuel 24 est monté en parallèle avec le contact 23 pour pouvoir shunter ce dernier.A manual switch 24 is mounted in parallel with the contact 23 to be able to shunt the latter.

Lorsque le générateur de courant à haute fréquence 1 est réglé sur la position bistouri (bist.) et est commandé par la pédale de commande de bistouri 13, le dispositif de contrôle conforme à l'invention comprenant le générateur de courant de contrôle 17, le dispositif de mesure 18, le relais 22 et le contact 23 n'est pas en action. Par contre, le dispositif de contrôle est mis en action automatiquement lors du réglage du générateur 1 sur la position coagulation (coag.) et lors de l'ouverture de l'interrupteur 24. When the high frequency current generator 1 is set to the scalpel position (bist.) And is controlled by the scalpel control pedal 13, the control device according to the invention comprising the control current generator 17, the measuring device 18, the relay 22 and the contact 23 is not in action. On the other hand, the control device is automatically activated when the generator 1 is set to the coagulation position (coag.) And when the switch 24 is opened.

Pour effectuer une coagulation, l'opérateur applique l'électrode 3 a l'endroit auquel il veut réaliser la coagulation et enfonce la pédale 14. Le courant IHF auquel est superposé le courant ic du générateur 17 produit ainsi un échauffement des tissus au niveau de l'extrémité de l'électrode 3, échauffement qui entrain une coagulation des tissus.  To perform a coagulation, the operator applies the electrode 3 at the place where he wants to achieve coagulation and depresses the pedal 14. The IHF current which is superimposed on the ic current of the generator 17 thus produces a heating of the tissue at the level of the end of the electrode 3, warming up which coagulates the tissues.

La résistance initialen;ent faible des tissus en contact avec l'électrode 3 augmente progressivement au fur et à mesure que les tissus coagulent, c'est-à-dire se dessèchent. Avec l'augmentation de la résistance des tissus, l'intensité du courant iC diminue. Le dispositif de mesure 18 est réglé sur un seuil d'intensité correspondant à un degré de coagulation optimal défini par une résistance déterminée des tissus. Dès que ce seuil est atteint, le dispositif de mesure 18 excite le relais 22 qui ouvre le contact 23, interrompant ainsi la commande du générateur 1, ce qui arrête la coagulation.The initial weak resistance of the tissues in contact with the electrode 3 increases progressively as the tissues coagulate, i.e., dry out. As the tissue strength increases, the intensity of the current iC decreases. The measuring device 18 is set to an intensity threshold corresponding to an optimum degree of coagulation defined by a determined resistance of the tissues. As soon as this threshold is reached, the measuring device 18 excites the relay 22 which opens the contact 23, thus interrupting the control of the generator 1, which stops the coagulation.

En fermant l'interrupteur 24, on peut mettre hors service le dispositif de contrôle, ce qui permet a l'opérateur de doser lui-même les coagulations s'il le désire. By closing the switch 24, the control device can be put out of service, which allows the operator to self-dose the coagulations if he so desires.

Le dispositif de mesure 18 est établi de manière à autoriser le fonctionnement et provoquer l'arrêt du générateur de courant a haute fréquence 1, lors de la coagulation, en fonction de trois seuils correspondant à trois résistances
R1 ( R2 < R3 et de la valeur de résistance R présentée par les tissus du patient.The measuring device 18 is set up so as to allow the operation and cause the high-frequency current generator 1 to stop, during coagulation, according to three thresholds corresponding to three resistors.
R1 (R2 <R3 and the resistance value R presented by the patient's tissues.

Si R > R3(électrode 3 non appliquée sur les tissus du patient), le dispositif de mesure 18 interdit le fonctionnement du générateur 1, même si la pédale de commande de coagulation 14 est enfoncée. If R> R3 (electrode 3 not applied to the tissues of the patient), the measuring device 18 prohibits the operation of the generator 1, even if the coagulation control pedal 14 is depressed.

Si R < R1 (électrode 3 en contact avec les tissus), le générateur 1 fonctionne lorsque la pédale 14 est actionnée. La coagulation commence et R augmente progressivement. If R <R1 (electrode 3 in contact with the tissues), the generator 1 operates when the pedal 14 is actuated. Coagulation begins and R gradually increases.

Dès que R = R2 (R2 étant le seuil de déclenchement de l'arrêt de la coagulation), le dispositif de mesure 18 arrête le générateur 1 sans que l'opérateur n'ait a relâcher la pédale 14. As soon as R = R2 (R2 being the threshold for triggering the cessation of coagulation), the measuring device 18 stops the generator 1 without the operator having to release the pedal 14.

Pour réarmer le dispositif de contrôle, l'opérateur relève ltelectrode 3 mais peut maintenir enfoncer la pédale 14; cela présente d'ailleurs l'avantage pour l'opérateur de pouvoir effectuer plusieurs coagulation en série sans relâchez la pédale, simplement en déplaçant l'électrode 3. To reset the control device, the operator returns the electrode 3 but can hold down the pedal 14; this also has the advantage for the operator to be able to perform several coagulation series without releasing the pedal, simply by moving the electrode 3.

Par contre, l'opérateur reste a tout moment maître de la coagulation qu'il peut arrêter immédiatement, s'il juge nécessaire, en relâchant la pédale 14.  On the other hand, the operator remains at all times master of the coagulation which he can stop immediately, if it deems necessary, by releasing the pedal 14.

Pour appliquer le dispositif de contrôle tel que représente et décrit à la coagulation bipolaire qui consiste à utiliser une pince à deux branches isolées dont chacune est reliée à un pôle d'un générateur de courant à haute fréquence, il suffit de relier les deux branches de la pince par deux conducteurs, directement ou indirectement, aux deux douilles 6 et 11. To apply the control device as represented and described to bipolar coagulation which consists of using a pair of insulated tweezers each of which is connected to a pole of a high-frequency current generator, it is sufficient to connect the two branches of the the clamp by two conductors, directly or indirectly, to the two sockets 6 and 11.

Seules les caractéristiques générales du dispositif de contrôle conforme à l'invention ont été décrites ci-dessus et représentées sur le dessin schématique annexé. De multiples variantes à la portée de l'homme de l'art sont concevables en ce qui concerne, par exemple, la réalisation du filtre 19, du dispositif de mesure 18 et du dispositif d'arrêt 22, 23, notamment en fonction de la nature du courant de contrôle utilisé. Ce courant peut être, par exemple un courant continu comme dans l'exemple représenté, ou encore un courant alternatif à basse fréquence, un courant alternatif ayant une fréquence nettement plus élevée que celle du courant de coagulation, ou également un courant complexe, par exemple des impulsions codées. Il suffit que ce courant soit de très faible intensité, soit calibré et soit facilement identifiable par rapport au courant de coagulation.  Only the general characteristics of the control device according to the invention have been described above and shown in the attached schematic drawing. Multiple variants within the reach of those skilled in the art are conceivable as regards, for example, the production of the filter 19, the measuring device 18 and the stop device 22, 23, in particular according to the nature of the control current used. This current may be, for example a direct current as in the example shown, or alternatively a low-frequency alternating current, an alternating current having a frequency much higher than that of the coagulation current, or also a complex current, for example encoded pulses. It is sufficient for this current to be of very low intensity, calibrated and easily identifiable with respect to the coagulation current.

Claims (2)

REVENDICATIONS 1. Procédé de contrôle de la coagulation de tissus d'un patient a l'aide d'un courant a haute fréquence fourni par un générateur dont soit un pôle est relié à une électrode fine dite électrode active appliquée contre les tissus à coaguler dans la zone opératoire du patient et l'autre à une électrode de grande surface dite électrode indifférente, en contact avec le patient en dehors de la zone opératoire, soit les deux pâles sont reliés à deux électrodes fines appliquées contre les tissus à coaguler dans la zone opératoire du patient, caractérisé par le fait qu'on superpose au courant de coagulation à haute fréquence un courant de contrôle de très faible intensité, calibré, nettement identifiable par rapport au courant de coagulation, et qu'on mesure la variation de l'intensité de ce courant de contrôle pour déclencher l'arrêt de la coagulation dès que l'intensité du courant de contrôle, qui est fonction de la résistance des tissus en cours de coagulation, atteint une valeur limite inférieure prédéterminée. 1. A method for controlling the coagulation of tissues of a patient using a high frequency current supplied by a generator of which either a pole is connected to a thin electrode called active electrode applied against the tissues to be coagulated in the operating area of the patient and the other to a large surface electrode called indifferent electrode, in contact with the patient outside the operating area, or the two blades are connected to two thin electrodes applied against the tissues to be coagulated in the operating area of the patient, characterized in that a control current of very low intensity, calibrated, clearly identifiable with respect to the coagulation current is superimposed on the high-frequency coagulation current, and that the variation in the intensity of the coagulation is measured. this control current to trigger the cessation of coagulation as soon as the intensity of the control current, which is a function of the resistance of the tissues in the course of oagulation, reaches a predetermined lower limit value. 2. Dispositif pour la mise en oeuvre du procédé suivant la revendication 1, caractérisé par le fait qu'il comprend un générateur de courant de contrôle monté en parallèle avec le générateur de courant de coagulation à haute fréquence, un dispositif de mesure de l'intensité du courant de contrôle, monté en série avec ledit générateur de courant de contrôle, un dispositif de filtrage séparant le courant de coagulation du courant de contrôle, et un dispositif d'arrêt automatique du générateur de courant de coagulation, commandé par le dispositif de mesure du courant de contrôle lorsque l'intensite de ce courant atteint une valeur limite inférieure prédéterminée.  2. Device for implementing the method according to claim 1, characterized in that it comprises a control current generator connected in parallel with the high frequency coagulation current generator, a device for measuring the intensity of the control current, connected in series with said control current generator, a filtering device separating the coagulation current from the control current, and an automatic shutdown device of the coagulation current generator, controlled by the control device. measurement of the control current when the intensity of this current reaches a predetermined lower limit value.
FR8106454A 1981-03-31 1981-03-31 METHOD AND DEVICE FOR CONTROLLING THE COAGULATION OF TISSUES USING A HIGH FREQUENCY CURRENT Expired FR2502935B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8106454A FR2502935B1 (en) 1981-03-31 1981-03-31 METHOD AND DEVICE FOR CONTROLLING THE COAGULATION OF TISSUES USING A HIGH FREQUENCY CURRENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8106454A FR2502935B1 (en) 1981-03-31 1981-03-31 METHOD AND DEVICE FOR CONTROLLING THE COAGULATION OF TISSUES USING A HIGH FREQUENCY CURRENT

Publications (2)

Publication Number Publication Date
FR2502935A1 true FR2502935A1 (en) 1982-10-08
FR2502935B1 FR2502935B1 (en) 1985-10-04

Family

ID=9256830

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8106454A Expired FR2502935B1 (en) 1981-03-31 1981-03-31 METHOD AND DEVICE FOR CONTROLLING THE COAGULATION OF TISSUES USING A HIGH FREQUENCY CURRENT

Country Status (1)

Country Link
FR (1) FR2502935B1 (en)

Cited By (248)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126814A1 (en) * 1983-05-24 1984-12-05 Sien-Shih Chang Electro-surgical unit control apparatus
EP0341446A2 (en) * 1988-05-09 1989-11-15 Karl Storz GmbH & Co. High frequency generator to cut and coagulate the tissues in high frequency surgery
EP0521501A2 (en) * 1991-07-04 1993-01-07 DELMA ELEKTRO-UND MEDIZINISCHE APPARATEBAU GESELLSCHAFT mbH Electrosurgical treatment instrument
EP0558317A2 (en) * 1992-02-27 1993-09-01 G2 Design Limited Cauterising apparatus
EP0812576A1 (en) * 1996-06-14 1997-12-17 Gebr. Berchtold GmbH & Co. High frequency generator for electrosurgery
US6203541B1 (en) * 1999-04-23 2001-03-20 Sherwood Services Ag Automatic activation of electrosurgical generator bipolar output
US7642451B2 (en) 2008-01-23 2010-01-05 Vivant Medical, Inc. Thermally tuned coaxial cable for microwave antennas
US7713076B2 (en) 2007-11-27 2010-05-11 Vivant Medical, Inc. Floating connector for microwave surgical device
US7863984B1 (en) 2009-07-17 2011-01-04 Vivant Medical, Inc. High efficiency microwave amplifier
US8069553B2 (en) 2009-09-09 2011-12-06 Vivant Medical, Inc. Method for constructing a dipole antenna
US8118808B2 (en) 2009-03-10 2012-02-21 Vivant Medical, Inc. Cooled dielectrically buffered microwave dipole antenna
US8131339B2 (en) 2007-11-27 2012-03-06 Vivant Medical, Inc. System and method for field ablation prediction
US8152802B2 (en) 2009-01-12 2012-04-10 Tyco Healthcare Group Lp Energy delivery algorithm filter pre-loading
US8162932B2 (en) 2009-01-12 2012-04-24 Tyco Healthcare Group Lp Energy delivery algorithm impedance trend adaptation
US8167875B2 (en) 2009-01-12 2012-05-01 Tyco Healthcare Group Lp Energy delivery algorithm for medical devices
US8172836B2 (en) 2008-08-11 2012-05-08 Tyco Healthcare Group Lp Electrosurgical system having a sensor for monitoring smoke or aerosols
US8174267B2 (en) 2008-09-30 2012-05-08 Vivant Medical, Inc. Intermittent microwave energy delivery system
US8180433B2 (en) 2008-09-30 2012-05-15 Vivant Medical, Inc. Microwave system calibration apparatus, system and method of use
US8197473B2 (en) 2009-02-20 2012-06-12 Vivant Medical, Inc. Leaky-wave antennas for medical applications
US8202270B2 (en) 2009-02-20 2012-06-19 Vivant Medical, Inc. Leaky-wave antennas for medical applications
US8211098B2 (en) 2008-08-25 2012-07-03 Vivant Medical, Inc. Microwave antenna assembly having a dielectric body portion with radial partitions of dielectric material
US8211100B2 (en) 2009-01-12 2012-07-03 Tyco Healthcare Group Lp Energy delivery algorithm for medical devices based on maintaining a fixed position on a tissue electrical conductivity v. temperature curve
US8216227B2 (en) 2009-05-06 2012-07-10 Vivant Medical, Inc. Power-stage antenna integrated system with junction member
US8231553B2 (en) 2009-01-13 2012-07-31 Tyco Healthcare Group Lp Method for wireless control of electrosurgery
US8235917B2 (en) 2009-01-13 2012-08-07 Tyco Healthcare Group Lp Wireless electrosurgical controller
US8235981B2 (en) 2009-06-02 2012-08-07 Vivant Medical, Inc. Electrosurgical devices with directional radiation pattern
US8242782B2 (en) 2008-09-30 2012-08-14 Vivant Medical, Inc. Microwave ablation generator control system
US8248075B2 (en) 2008-09-30 2012-08-21 Vivant Medical, Inc. System, apparatus and method for dissipating standing wave in a microwave delivery system
US8246615B2 (en) 2009-05-19 2012-08-21 Vivant Medical, Inc. Tissue impedance measurement using a secondary frequency
US8257349B2 (en) 2008-03-28 2012-09-04 Tyco Healthcare Group Lp Electrosurgical apparatus with predictive RF source control
US8262652B2 (en) 2009-01-12 2012-09-11 Tyco Healthcare Group Lp Imaginary impedance process monitoring and intelligent shut-off
US8282632B2 (en) 2009-09-28 2012-10-09 Vivant Medical, Inc. Feedpoint optimization for microwave ablation dipole antenna with integrated tip
US8287529B2 (en) 2008-09-05 2012-10-16 Tyco Healthcare Group Lp Electrosurgical apparatus with high speed energy recovery
US8298231B2 (en) 2008-01-31 2012-10-30 Tyco Healthcare Group Lp Bipolar scissors for adenoid and tonsil removal
US8328800B2 (en) 2009-08-05 2012-12-11 Vivant Medical, Inc. Directive window ablation antenna with dielectric loading
US8328799B2 (en) 2009-08-05 2012-12-11 Vivant Medical, Inc. Electrosurgical devices having dielectric loaded coaxial aperture with distally positioned resonant structure
US8333759B2 (en) 2009-01-12 2012-12-18 Covidien Lp Energy delivery algorithm for medical devices
US8334812B2 (en) 2009-06-19 2012-12-18 Vivant Medical, Inc. Microwave ablation antenna radiation detector
US8346370B2 (en) 2008-09-30 2013-01-01 Vivant Medical, Inc. Delivered energy generator for microwave ablation
US8353903B2 (en) 2009-05-06 2013-01-15 Vivant Medical, Inc. Power-stage antenna integrated system
US8377053B2 (en) 2008-09-05 2013-02-19 Covidien Lp Electrosurgical apparatus with high speed energy recovery
US8377054B2 (en) 2009-09-24 2013-02-19 Covidien Lp Automatic control circuit for use in an electrosurgical generator
US8382751B2 (en) 2009-09-10 2013-02-26 Covidien Lp System and method for power supply noise reduction
US8394086B2 (en) 2008-09-03 2013-03-12 Vivant Medical, Inc. Microwave shielding apparatus
US8394092B2 (en) 2009-11-17 2013-03-12 Vivant Medical, Inc. Electromagnetic energy delivery devices including an energy applicator array and electrosurgical systems including same
US8394087B2 (en) 2009-09-24 2013-03-12 Vivant Medical, Inc. Optical detection of interrupted fluid flow to ablation probe
US8403924B2 (en) 2008-09-03 2013-03-26 Vivant Medical, Inc. Shielding for an isolation apparatus used in a microwave generator
US8409186B2 (en) 2008-03-13 2013-04-02 Covidien Lp Crest factor enhancement in electrosurgical generators
US8430871B2 (en) 2009-10-28 2013-04-30 Covidien Lp System and method for monitoring ablation size
US8454590B2 (en) 2010-02-26 2013-06-04 Covidien Lp Enhanced lossless current sense circuit
US8463396B2 (en) 2009-05-06 2013-06-11 Covidien LLP Power-stage antenna integrated system with high-strength shaft
US8469953B2 (en) 2009-11-16 2013-06-25 Covidien Lp Twin sealing chamber hub
US8491579B2 (en) 2010-02-05 2013-07-23 Covidien Lp Electrosurgical devices with choke shorted to biological tissue
US8512328B2 (en) 2008-10-13 2013-08-20 Covidien Lp Antenna assemblies for medical applications
US8545493B2 (en) 2009-09-29 2013-10-01 Covidien Lp Flow rate monitor for fluid cooled microwave ablation probe
US8552915B2 (en) 2009-06-19 2013-10-08 Covidien Lp Microwave ablation antenna radiation detector
US8556889B2 (en) 2009-09-29 2013-10-15 Covidien Lp Flow rate monitor for fluid cooled microwave ablation probe
US8610501B2 (en) 2009-11-16 2013-12-17 Covidien Lp Class resonant-H electrosurgical generators
US8617154B2 (en) 2010-06-25 2013-12-31 Covidien Lp Current-fed push-pull converter with passive voltage clamp
US8617153B2 (en) 2010-02-26 2013-12-31 Covidien Lp Tunable microwave ablation probe
US8623007B2 (en) 2010-06-30 2014-01-07 Covidien Lp Electrosurgical generator to ablation device adaptor
US8655454B2 (en) 2007-11-27 2014-02-18 Covidien Lp Targeted cooling of deployable microwave antenna with cooling chamber
US8653994B2 (en) 2012-03-21 2014-02-18 Covidien Lp System and method for detection of ADC errors
US8664934B2 (en) 2012-01-27 2014-03-04 Covidien Lp System and method for verifying the operating frequency of digital control circuitry
US8668690B2 (en) 2010-06-03 2014-03-11 Covidien Lp Apparatus and method for optimal tissue separation
US8672923B2 (en) 2010-03-11 2014-03-18 Covidien Lp Automated probe placement device
US8734444B2 (en) 2008-10-10 2014-05-27 Covidien Lp System and method for delivering high current to electrosurgical device
US8764744B2 (en) 2010-01-25 2014-07-01 Covidien Lp System for monitoring ablation size
US8777939B2 (en) 2010-02-26 2014-07-15 Covidien Lp Self-tuning microwave ablation probe
US8790335B2 (en) 2009-08-28 2014-07-29 Covidien Lp Electrosurgical generator
US8834460B2 (en) 2009-05-29 2014-09-16 Covidien Lp Microwave ablation safety pad, microwave safety pad system and method of use
US8876814B2 (en) 2009-09-29 2014-11-04 Covidien Lp Fluid cooled choke dielectric and coaxial cable dielectric
US8894641B2 (en) 2009-10-27 2014-11-25 Covidien Lp System and method for monitoring ablation size
US8906007B2 (en) 2009-09-28 2014-12-09 Covidien Lp Electrosurgical devices, directional reflector assemblies coupleable thereto, and electrosurgical systems including same
US8932291B2 (en) 2012-04-13 2015-01-13 Covidien Lp Electrosurgical systems
US8944834B2 (en) 2004-10-13 2015-02-03 Covidien Ag Universal foot switch contact port
US8956350B2 (en) 2007-01-31 2015-02-17 Covidien Lp Thermal feedback systems and methods of using the same
US8968288B2 (en) 2010-02-19 2015-03-03 Covidien Lp Ablation devices with dual operating frequencies, systems including same, and methods of adjusting ablation volume using same
US8968290B2 (en) 2012-03-14 2015-03-03 Covidien Lp Microwave ablation generator control system
US8968293B2 (en) 2011-04-12 2015-03-03 Covidien Lp Systems and methods for calibrating power measurements in an electrosurgical generator
US8974449B2 (en) 2010-07-16 2015-03-10 Covidien Lp Dual antenna assembly with user-controlled phase shifting
US9028479B2 (en) 2011-08-01 2015-05-12 Covidien Lp Electrosurgical apparatus with real-time RF tissue energy control
US9028481B2 (en) 2011-01-05 2015-05-12 Covidien Lp System and method for measuring current of an electrosurgical generator
US9028474B2 (en) 2010-03-25 2015-05-12 Covidien Lp Microwave surface coagulator with retractable blade
US9028484B2 (en) 2010-11-16 2015-05-12 Covidien Lp Fingertip electrosurgical instruments for use in hand-assisted surgery and systems including same
US9037447B2 (en) 2012-01-27 2015-05-19 Covidien Lp Systems and methods for phase predictive impedance loss model calibration and compensation
US9044253B2 (en) 2010-12-23 2015-06-02 Covidien Lp Microwave field-detecting needle assemblies, methods of manufacturing same, methods of adjusting an ablation field radiating into tissue using same, and systems including same
US9044254B2 (en) 2012-08-07 2015-06-02 Covidien Lp Microwave ablation catheter and method of utilizing the same
US9050089B2 (en) 2011-05-31 2015-06-09 Covidien Lp Electrosurgical apparatus with tissue site sensing and feedback control
US9095359B2 (en) 2009-09-18 2015-08-04 Covidien Lp Tissue ablation system with energy distribution
US9099863B2 (en) 2011-09-09 2015-08-04 Covidien Lp Surgical generator and related method for mitigating overcurrent conditions
US9113891B2 (en) 2011-07-15 2015-08-25 Covidien Lp Clip-over disposable assembly for use with hemostat-style surgical instrument and methods of manufacturing same
US9113932B1 (en) 2008-08-28 2015-08-25 Covidien Lp Microwave antenna with choke
US9113926B2 (en) 2009-09-29 2015-08-25 Covidien Lp Management of voltage standing wave ratio at skin surface during microwave ablation
US9113624B2 (en) 2008-10-15 2015-08-25 Covidien Lp System and method for perfusing biological organs
US9119647B2 (en) 2010-11-12 2015-09-01 Covidien Lp Apparatus, system and method for performing an electrosurgical procedure
US9119624B2 (en) 2006-04-24 2015-09-01 Covidien Ag ARC based adaptive control system for an electrosurgical unit
US9121774B2 (en) 2012-06-22 2015-09-01 Covidien Lp Microwave thermometry for microwave ablation systems
US9173706B2 (en) 2008-08-25 2015-11-03 Covidien Lp Dual-band dipole microwave ablation antenna
US9192424B2 (en) 2012-05-31 2015-11-24 Covidien Lp AC active load
US9192436B2 (en) 2010-05-25 2015-11-24 Covidien Lp Flow rate verification monitor for fluid-cooled microwave ablation probe
US9192441B2 (en) 2011-02-17 2015-11-24 Covidien Lp Energy-delivery device including ultrasound transducer array and phased antenna array, and methods of adjusting an ablation field radiating into tissue using same
US9192437B2 (en) 2009-05-27 2015-11-24 Covidien Lp Narrow gauge high strength choked wet tip microwave ablation antenna
US9192308B2 (en) 2012-03-27 2015-11-24 Covidien Lp Microwave-shielded tissue sensor probe
US9192425B2 (en) 2012-06-26 2015-11-24 Covidien Lp System and method for testing electrosurgical generators
US9192439B2 (en) 2012-06-29 2015-11-24 Covidien Lp Method of manufacturing a surgical instrument
US9198711B2 (en) 2012-03-22 2015-12-01 Covidien Lp Electrosurgical system for communicating information embedded in an audio tone
US9198721B2 (en) 2012-05-22 2015-12-01 Covidien Lp Electrosurgical instrument
US9198723B2 (en) 2008-03-31 2015-12-01 Covidien Lp Re-hydration antenna for ablation
US9247994B2 (en) 2012-01-05 2016-02-02 Covidien Lp Ablation systems, probes, and methods for reducing radiation from an ablation probe into the environment
US9270202B2 (en) 2013-03-11 2016-02-23 Covidien Lp Constant power inverter with crest factor control
US9265560B2 (en) 2011-02-25 2016-02-23 Covidien Lp System and method for detecting and suppressing arc formation during an electrosurgical procedure
US9271788B2 (en) 2010-03-26 2016-03-01 Cividien LP Ablation devices with adjustable radiating section lengths, electrosurgical systems including same, and methods of adjusting ablation fields using same
US9271792B2 (en) 2012-05-04 2016-03-01 Covidien Lp Peripheral switching device for microwave energy platforms
US9283028B2 (en) 2013-03-15 2016-03-15 Covidien Lp Crest-factor control of phase-shifted inverter
US9301803B2 (en) 2010-05-26 2016-04-05 Covidien Lp System and method for chemically cooling an ablation antenna
US9301804B2 (en) 2011-02-03 2016-04-05 Covidien Lp Dual antenna microwave resection and ablation device, system and method of use
US9358067B2 (en) 2010-02-26 2016-06-07 Covidien Lp Tissue ablation system with internal and external radiation sources
US9364278B2 (en) 2012-04-30 2016-06-14 Covidien Lp Limited reuse ablation needles and ablation devices for use therewith
US9370314B2 (en) 2008-02-07 2016-06-21 Covidien Lp Endoscopic instrument for tissue identification
US9375247B2 (en) 2011-03-16 2016-06-28 Covidien Lp System and method for electrosurgical generator power measurement
US9375272B2 (en) 2008-10-13 2016-06-28 Covidien Lp Antenna assemblies for medical applications
US9375273B2 (en) 2009-09-18 2016-06-28 Covidien Lp System and method for checking high power microwave ablation system status on startup
US9375198B2 (en) 2012-06-26 2016-06-28 Covidien Lp Methods and systems for enhancing ultrasonic visibility of energy-delivery devices within tissue
US9375250B2 (en) 2012-04-09 2016-06-28 Covidien Lp Method for employing single fault safe redundant signals
US9375276B2 (en) 2010-06-30 2016-06-28 Covidien Lp Microwave antenna having a reactively-loaded loop configuration
US9375252B2 (en) 2012-08-02 2016-06-28 Covidien Lp Adjustable length and/or exposure electrodes
US9375249B2 (en) 2012-05-11 2016-06-28 Covidien Lp System and method for directing energy to tissue
US9381059B2 (en) 2011-04-05 2016-07-05 Covidien Lp Electrically-insulative hinge for electrosurgical jaw assembly, bipolar forceps including same, and methods of jaw-assembly alignment using fastened electrically-insulative hinge
US9456862B2 (en) 2013-02-19 2016-10-04 Covidien Lp Electrosurgical generator and system
US9480527B2 (en) 2010-03-08 2016-11-01 Covidien Lp Microwave antenna probe having a deployable ground plane
US9480523B2 (en) 2012-01-27 2016-11-01 Covidien Lp Systems and methods for phase predictive impedance loss model calibration and compensation
US9498276B2 (en) 2013-03-15 2016-11-22 Covidien Lp Systems and methods for narrowband real impedance control in electrosurgery
US9504516B2 (en) 2013-05-31 2016-11-29 Covidien LLP Gain compensation for a full bridge inverter
US9519021B2 (en) 2013-03-11 2016-12-13 Covidien Lp Systems and methods for detecting abnormalities within a circuit of an electrosurgical generator
US9522039B2 (en) 2009-03-11 2016-12-20 Covidien Lp Crest factor enhancement in electrosurgical generators
US9522032B2 (en) 2005-10-21 2016-12-20 Covidien Ag Circuit and method for reducing stored energy in an electrosurgical generator
US9529025B2 (en) 2012-06-29 2016-12-27 Covidien Lp Systems and methods for measuring the frequency of signals generated by high frequency medical devices
US9539050B2 (en) 2011-04-12 2017-01-10 Covidien Lp System and method for process monitoring and intelligent shut-off
US9549778B2 (en) 2010-06-30 2017-01-24 Covidien Lp Adjustable tuning of a dielectrically loaded loop antenna
US9559594B2 (en) 2013-06-24 2017-01-31 Covidien Lp Dead-time optimization of resonant inverters
US9566111B2 (en) 2012-06-26 2017-02-14 Covidien Lp Ablation device having an expandable chamber for anchoring the ablation device to tissue
US9579151B2 (en) 2007-11-16 2017-02-28 Covidien Lp Dynamically matched microwave antenna for tissue ablation
US9597151B2 (en) 2012-04-05 2017-03-21 Covidien Lp Electrosurgical tissue ablation systems and methods capable of detecting excessive bending of a probe and alerting a user
US9610122B2 (en) 2013-03-29 2017-04-04 Covidien Lp Step-down coaxial microwave ablation applicators and methods for manufacturing same
US9622813B2 (en) 2007-11-01 2017-04-18 Covidien Lp Method for volume determination and geometric reconstruction
US9636165B2 (en) 2013-07-29 2017-05-02 Covidien Lp Systems and methods for measuring tissue impedance through an electrosurgical cable
US9642665B2 (en) 2006-01-24 2017-05-09 Covidien Ag Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm
US9642670B2 (en) 2013-10-29 2017-05-09 Covidien Lp Resonant inverter with a common mode choke
US9662165B2 (en) 2012-10-02 2017-05-30 Covidien Lp Device and method for heat-sensitive agent application
US9668802B2 (en) 2012-10-02 2017-06-06 Covidien Lp Devices and methods for optical detection of tissue contact
US9681916B2 (en) 2012-01-06 2017-06-20 Covidien Lp System and method for treating tissue using an expandable antenna
US9693823B2 (en) 2012-01-06 2017-07-04 Covidien Lp System and method for treating tissue using an expandable antenna
US9700366B2 (en) 2008-08-01 2017-07-11 Covidien Lp Polyphase electrosurgical system and method
US9713497B2 (en) 2010-01-29 2017-07-25 Covidien Lp System and method for performing an electrosurgical procedure using an ablation device with an integrated imaging device
US9724158B2 (en) 2011-08-09 2017-08-08 Covidien Lp Microwave antenna having a coaxial cable with an adjustable outer conductor configuration
US9743975B2 (en) 2012-10-02 2017-08-29 Covidien Lp Thermal ablation probe for a medical device
US9768373B2 (en) 2003-10-30 2017-09-19 Covidien Ag Switched resonant ultrasonic power amplifier system
US9763728B2 (en) 2008-06-09 2017-09-19 Covidien Lp Ablation needle guide
US9770294B2 (en) 2011-01-05 2017-09-26 Covidien Lp Energy-delivery devices with flexible fluid-cooled shaft, inflow/outflow junctions suitable for use with same, and systems including same
US9770283B2 (en) 2013-09-24 2017-09-26 Covidien Lp Systems and methods for improving efficiency of electrosurgical generators
US9782212B2 (en) 2014-12-02 2017-10-10 Covidien Lp High level algorithms
US9814844B2 (en) 2013-08-27 2017-11-14 Covidien Lp Drug-delivery cannula assembly
US9814525B2 (en) 2011-02-03 2017-11-14 Covidien Lp System and method for ablation procedure monitoring using electrodes
US9839477B2 (en) 2010-02-19 2017-12-12 Covidien Lp Bipolar electrode probe for ablation monitoring
US9839469B2 (en) 2013-09-24 2017-12-12 Covidien Lp Systems and methods for improving efficiency of electrosurgical generators
US9861439B2 (en) 2008-01-23 2018-01-09 Covidien Lp Choked dielectric loaded tip dipole microwave antenna
US9861425B2 (en) 2012-10-02 2018-01-09 Covidien Lp System and method for using resonance phasing for measuring impedance
US9867651B2 (en) 2013-09-26 2018-01-16 Covidien Lp Systems and methods for estimating tissue parameters using surgical devices
US9867670B2 (en) 2009-04-01 2018-01-16 Covidien Lp Microwave ablation system and user-controlled ablation size and method of use
US9867665B2 (en) 2013-09-06 2018-01-16 Covidien Lp Microwave ablation catheter, handle, and system
US9867664B2 (en) 2010-05-03 2018-01-16 Covidien Lp System and method of deploying an antenna assembly
US9872719B2 (en) 2013-07-24 2018-01-23 Covidien Lp Systems and methods for generating electrosurgical energy using a multistage power converter
US9888962B2 (en) 2010-01-29 2018-02-13 Covidien Lp Apparatus and method of use for treating blood vessels
US9888963B2 (en) 2010-05-11 2018-02-13 Covidien Lp Electrosurgical devices with balun structure for air exposure of antenna radiating section and method of directing energy to tissue using same
US9895186B2 (en) 2013-03-11 2018-02-20 Covidien Systems and methods for detecting abnormalities within a circuit of an electrosurgical generator
US9901398B2 (en) 2012-06-29 2018-02-27 Covidien Lp Microwave antenna probes
US9901399B2 (en) 2012-12-17 2018-02-27 Covidien Lp Ablation probe with tissue sensing configuration
US9901385B2 (en) 2014-01-13 2018-02-27 Covidien Lp Systems and methods for multifrequency cable compensation
US9913679B2 (en) 2013-10-16 2018-03-13 Covidien Lp Electrosurgical systems and methods for monitoring power dosage
US9921243B2 (en) 2012-12-17 2018-03-20 Covidien Lp System and method for voltage and current sensing
US9925005B2 (en) 2012-01-05 2018-03-27 Covidien Lp Ablation systems, probes, and methods for reducing radiation from an ablation probe into the environment
US9925002B2 (en) 2008-01-31 2018-03-27 Covidien Lp Articulating ablation device and method
US9937003B2 (en) 2011-01-05 2018-04-10 Covidien Lp Energy-delivery devices with flexible fluid-cooled shaft, inflow/outflow junctions suitable for use with same, and systems including same
US9943359B2 (en) 2012-04-30 2018-04-17 Covidien Lp Limited reuse ablation needles and ablation devices for use therewith
US9943366B2 (en) 2010-09-08 2018-04-17 Covidien Lp Microwave spacers and method of use
US9943367B2 (en) 2009-10-28 2018-04-17 Covidien Lp System and method for monitoring ablation size
US9949783B2 (en) 2014-04-04 2018-04-24 Covidien Lp Systems and methods for optimizing emissions from simultaneous activation of electrosurgery generators
US9949794B2 (en) 2008-03-27 2018-04-24 Covidien Lp Microwave ablation devices including expandable antennas and methods of use
US9968401B2 (en) 2009-12-18 2018-05-15 Covidien Lp Microwave ablation system with dielectric temperature probe
US9974595B2 (en) 2014-04-04 2018-05-22 Covidien Lp Systems and methods for optimizing emissions from simultaneous activation of electrosurgery generators
US9987068B2 (en) 2014-04-04 2018-06-05 Covidien Lp Systems and methods for optimizing emissions from simultaneous activation of electrosurgery generators
US10039588B2 (en) 2009-12-16 2018-08-07 Covidien Lp System and method for tissue sealing
US10039602B2 (en) 2002-04-16 2018-08-07 Covidien Lp Electrosurgical energy channel splitters and systems for delivering electrosurgical energy
US10039601B2 (en) 2010-03-26 2018-08-07 Covidien Lp Ablation devices with adjustable radiating section lengths, electrosurgical systems including same, and methods of adjusting ablation fields using same
US10045819B2 (en) 2009-04-14 2018-08-14 Covidien Lp Frequency identification for microwave ablation probes
US10058374B2 (en) 2013-09-26 2018-08-28 Covidien Lp Systems and methods for estimating tissue parameters using surgical devices
US10076383B2 (en) 2012-01-25 2018-09-18 Covidien Lp Electrosurgical device having a multiplexer
US10080600B2 (en) 2015-01-21 2018-09-25 Covidien Lp Monopolar electrode with suction ability for CABG surgery
US10098697B2 (en) 2011-04-08 2018-10-16 Covidien Lp Microwave tissue dissection and coagulation
US10105172B2 (en) 2013-10-16 2018-10-23 Covidien Lp Radiofrequency amplifier impedance optimization
US10123837B2 (en) 2011-01-05 2018-11-13 Covidien Lp Energy-delivery devices with flexible fluid-cooled shaft, inflow / outflow junctions suitable for use with same, and systems including same
US10130416B2 (en) 2012-04-30 2018-11-20 Covidien Lp Limited reuse ablation needles and ablation devices for use therewith
US10130412B2 (en) 2013-09-26 2018-11-20 Covidien Lp Systems and methods for estimating tissue parameters using surgical devices
US10188446B2 (en) 2013-10-16 2019-01-29 Covidien Lp Resonant inverter
US10188460B2 (en) 2008-10-17 2019-01-29 Covidien Lp Choked dielectric loaded tip dipole microwave antenna
US10188448B2 (en) 2014-11-21 2019-01-29 Covidien Lp Electrosurgical system for multi-frequency interrogation of parasitic parameters of an electrosurgical instrument
US10201265B2 (en) 2013-09-06 2019-02-12 Covidien Lp Microwave ablation catheter, handle, and system
US10213257B2 (en) 2012-10-02 2019-02-26 Covidien Lp Devices and methods for optical detection of tissue contact
US10271829B2 (en) 2012-10-02 2019-04-30 Covidien Lp Heat-sensitive optical probes
US10278764B2 (en) 2014-12-02 2019-05-07 Covidien Lp Electrosurgical generators and sensors
US10281496B2 (en) 2014-12-02 2019-05-07 Covidien Lp Electrosurgical generators and sensors
US10285750B2 (en) 2013-07-29 2019-05-14 Covidien Lp Systems and methods for operating an electrosurgical generator
US10292753B2 (en) 2014-12-02 2019-05-21 Covidien Lp Electrosurgical generators and sensors
US10335230B2 (en) 2011-03-09 2019-07-02 Covidien Lp Systems for thermal-feedback-controlled rate of fluid flow to fluid-cooled antenna assembly and methods of directing energy to tissue using same
US10363094B2 (en) 2011-04-08 2019-07-30 Covidien Lp Flexible microwave catheters for natural or artificial lumens
US10376301B2 (en) 2011-09-28 2019-08-13 Covidien Lp Logarithmic amplifier, electrosurgical generator including same, and method of controlling electrosurgical generator using same
US10376309B2 (en) 2016-08-02 2019-08-13 Covidien Lp Ablation cable assemblies and a method of manufacturing the same
US10492850B2 (en) 2014-04-04 2019-12-03 Covidien Lp Systems and methods for calculating tissue impedance in electrosurgery
US10588693B2 (en) 2011-05-31 2020-03-17 Covidien Lp Modified wet tip antenna design
US10588684B2 (en) 2010-07-19 2020-03-17 Covidien Lp Hydraulic conductivity monitoring to initiate tissue division
US10610298B2 (en) 2011-04-08 2020-04-07 Covidien Lp Microwave ablation instrument with interchangeable antenna probe
US10610285B2 (en) 2013-07-19 2020-04-07 Covidien Lp Electrosurgical generators
US10610287B2 (en) 2016-05-05 2020-04-07 Covidien Lp Advanced simultaneous activation algorithm
US10617463B2 (en) 2015-04-23 2020-04-14 Covidien Lp Systems and methods for controlling power in an electrosurgical generator
US10624697B2 (en) 2014-08-26 2020-04-21 Covidien Lp Microwave ablation system
US10631914B2 (en) 2013-09-30 2020-04-28 Covidien Lp Bipolar electrosurgical instrument with movable electrode and related systems and methods
US10716619B2 (en) 2017-06-19 2020-07-21 Covidien Lp Microwave and radiofrequency energy-transmitting tissue ablation systems
US10729484B2 (en) 2013-07-16 2020-08-04 Covidien Lp Electrosurgical generator with continuously and arbitrarily variable crest factor
US10772673B2 (en) 2016-05-02 2020-09-15 Covidien Lp Surgical energy system with universal connection features
US10813692B2 (en) 2016-02-29 2020-10-27 Covidien Lp 90-degree interlocking geometry for introducer for facilitating deployment of microwave radiating catheter
US10814128B2 (en) 2016-11-21 2020-10-27 Covidien Lp Electroporation catheter
US10813691B2 (en) 2014-10-01 2020-10-27 Covidien Lp Miniaturized microwave ablation assembly
US10828100B2 (en) 2009-08-25 2020-11-10 Covidien Lp Microwave ablation with tissue temperature monitoring
US10842563B2 (en) 2013-03-15 2020-11-24 Covidien Lp System and method for power control of electrosurgical resonant inverters
US10869712B2 (en) 2016-05-02 2020-12-22 Covidien Lp System and method for high frequency leakage reduction through selective harmonic elimination in electrosurgical generators
US11000332B2 (en) 2016-08-02 2021-05-11 Covidien Lp Ablation cable assemblies having a large diameter coaxial feed cable reduced to a small diameter at intended site
US11006997B2 (en) 2016-08-09 2021-05-18 Covidien Lp Ultrasonic and radiofrequency energy production and control from a single power converter
US11013548B2 (en) 2005-03-31 2021-05-25 Covidien Ag Method and system for compensating for external impedance of energy carrying component when controlling electrosurgical generator
US11065053B2 (en) 2016-08-02 2021-07-20 Covidien Lp Ablation cable assemblies and a method of manufacturing the same
US11090106B2 (en) 2015-04-23 2021-08-17 Covidien Lp Control systems for electrosurgical generator
US11123094B2 (en) 2017-12-13 2021-09-21 Covidien Lp Ultrasonic surgical instruments and methods for sealing and/or cutting tissue
US11147621B2 (en) 2017-11-02 2021-10-19 Covidien Lp Systems and methods for ablating tissue
US11160600B2 (en) 2018-03-01 2021-11-02 Covidien Lp Monopolar return electrode grasper with return electrode monitoring
US11197715B2 (en) 2016-08-02 2021-12-14 Covidien Lp Ablation cable assemblies and a method of manufacturing the same
US11272975B2 (en) 2017-09-22 2022-03-15 Covidien Lp Systems and methods for controlled electrosurgical dissection
US11534226B2 (en) 2017-09-22 2022-12-27 Covidien Lp Systems and methods for minimizing arcing of bipolar forceps
US11744631B2 (en) 2017-09-22 2023-09-05 Covidien Lp Systems and methods for controlled electrosurgical coagulation

Families Citing this family (91)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7364577B2 (en) 2002-02-11 2008-04-29 Sherwood Services Ag Vessel sealing system
US7901400B2 (en) 1998-10-23 2011-03-08 Covidien Ag Method and system for controlling output of RF medical generator
US7137980B2 (en) 1998-10-23 2006-11-21 Sherwood Services Ag Method and system for controlling output of RF medical generator
DE60315970T2 (en) 2002-05-06 2008-05-21 Covidien Ag BLOOD DETECTOR FOR CHECKING AN ELECTROSURGICAL UNIT
US7044948B2 (en) 2002-12-10 2006-05-16 Sherwood Services Ag Circuit for controlling arc energy from an electrosurgical generator
AU2004235739B2 (en) 2003-05-01 2010-06-17 Covidien Ag Method and system for programming and controlling an electrosurgical generator system
WO2005050151A1 (en) 2003-10-23 2005-06-02 Sherwood Services Ag Thermocouple measurement circuit
ES2372045T3 (en) 2003-10-23 2012-01-13 Covidien Ag REDUNDANT TEMPERATURE MONITORING IN ELECTROCHURGICAL SYSTEMS TO ATTENATE SAFETY.
US7131860B2 (en) 2003-11-20 2006-11-07 Sherwood Services Ag Connector systems for electrosurgical generator
US7766905B2 (en) 2004-02-12 2010-08-03 Covidien Ag Method and system for continuity testing of medical electrodes
US7780662B2 (en) 2004-03-02 2010-08-24 Covidien Ag Vessel sealing system using capacitive RF dielectric heating
US7553309B2 (en) 2004-10-08 2009-06-30 Covidien Ag Electrosurgical system employing multiple electrodes and method thereof
US7776035B2 (en) 2004-10-08 2010-08-17 Covidien Ag Cool-tip combined electrode introducer
US7282049B2 (en) 2004-10-08 2007-10-16 Sherwood Services Ag Electrosurgical system employing multiple electrodes and method thereof
US7947039B2 (en) 2005-12-12 2011-05-24 Covidien Ag Laparoscopic apparatus for performing electrosurgical procedures
US8147485B2 (en) 2006-01-24 2012-04-03 Covidien Ag System and method for tissue sealing
EP3210557B1 (en) 2006-01-24 2018-10-17 Covidien AG System for tissue sealing
US8216223B2 (en) 2006-01-24 2012-07-10 Covidien Ag System and method for tissue sealing
US7513896B2 (en) 2006-01-24 2009-04-07 Covidien Ag Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling
US9186200B2 (en) 2006-01-24 2015-11-17 Covidien Ag System and method for tissue sealing
US8685016B2 (en) 2006-01-24 2014-04-01 Covidien Ag System and method for tissue sealing
CA2574934C (en) 2006-01-24 2015-12-29 Sherwood Services Ag System and method for closed loop monitoring of monopolar electrosurgical apparatus
US7651493B2 (en) 2006-03-03 2010-01-26 Covidien Ag System and method for controlling electrosurgical snares
US7648499B2 (en) 2006-03-21 2010-01-19 Covidien Ag System and method for generating radio frequency energy
US7846158B2 (en) 2006-05-05 2010-12-07 Covidien Ag Apparatus and method for electrode thermosurgery
US8753334B2 (en) 2006-05-10 2014-06-17 Covidien Ag System and method for reducing leakage current in an electrosurgical generator
US8034049B2 (en) 2006-08-08 2011-10-11 Covidien Ag System and method for measuring initial tissue impedance
US7731717B2 (en) 2006-08-08 2010-06-08 Covidien Ag System and method for controlling RF output during tissue sealing
US7794457B2 (en) 2006-09-28 2010-09-14 Covidien Ag Transformer for RF voltage sensing
US7951144B2 (en) 2007-01-19 2011-05-31 Mahajan Roop L Thermal and electrical conductivity probes and methods of making the same
US7998139B2 (en) 2007-04-25 2011-08-16 Vivant Medical, Inc. Cooled helical antenna for microwave ablation
US8777941B2 (en) 2007-05-10 2014-07-15 Covidien Lp Adjustable impedance electrosurgical electrodes
US7777130B2 (en) 2007-06-18 2010-08-17 Vivant Medical, Inc. Microwave cable cooling
US8777945B2 (en) 2007-06-29 2014-07-15 Covidien Lp Method and system for monitoring tissue during an electrosurgical procedure
US7834484B2 (en) 2007-07-16 2010-11-16 Tyco Healthcare Group Lp Connection cable and method for activating a voltage-controlled generator
US8152800B2 (en) 2007-07-30 2012-04-10 Vivant Medical, Inc. Electrosurgical systems and printed circuit boards for use therewith
US8216220B2 (en) 2007-09-07 2012-07-10 Tyco Healthcare Group Lp System and method for transmission of combined data stream
US8181995B2 (en) 2007-09-07 2012-05-22 Tyco Healthcare Group Lp Cool tip junction
US8512332B2 (en) 2007-09-21 2013-08-20 Covidien Lp Real-time arc control in electrosurgical generators
US9057468B2 (en) 2007-11-27 2015-06-16 Covidien Lp Wedge coupling
US8435237B2 (en) 2008-01-29 2013-05-07 Covidien Lp Polyp encapsulation system and method
US8262703B2 (en) 2008-01-31 2012-09-11 Vivant Medical, Inc. Medical device including member that deploys in a spiral-like configuration and method
US8246614B2 (en) 2008-04-17 2012-08-21 Vivant Medical, Inc. High-strength microwave antenna coupling
US8059059B2 (en) 2008-05-29 2011-11-15 Vivant Medical, Inc. Slidable choke microwave antenna
US8192427B2 (en) 2008-06-09 2012-06-05 Tyco Healthcare Group Lp Surface ablation process with electrode cooling methods
US8226639B2 (en) 2008-06-10 2012-07-24 Tyco Healthcare Group Lp System and method for output control of electrosurgical generator
US8343149B2 (en) 2008-06-26 2013-01-01 Vivant Medical, Inc. Deployable microwave antenna for treating tissue
US8834409B2 (en) 2008-07-29 2014-09-16 Covidien Lp Method for ablation volume determination and geometric reconstruction
US8287527B2 (en) 2008-09-30 2012-10-16 Vivant Medical, Inc. Microwave system calibration apparatus and method of use
US8852179B2 (en) 2008-10-10 2014-10-07 Covidien Lp Apparatus, system and method for monitoring tissue during an electrosurgical procedure
US8323275B2 (en) 2009-06-19 2012-12-04 Vivant Medical, Inc. Laparoscopic port with microwave rectifier
US8932282B2 (en) 2009-08-03 2015-01-13 Covidien Lp Power level transitioning in a surgical instrument
USD634010S1 (en) 2009-08-05 2011-03-08 Vivant Medical, Inc. Medical device indicator guide
US9031668B2 (en) 2009-08-06 2015-05-12 Covidien Lp Vented positioner and spacer and method of use
USD613412S1 (en) 2009-08-06 2010-04-06 Vivant Medical, Inc. Vented microwave spacer
US7956620B2 (en) 2009-08-12 2011-06-07 Tyco Healthcare Group Lp System and method for augmented impedance sensing
US8328801B2 (en) 2009-08-17 2012-12-11 Vivant Medical, Inc. Surface ablation antenna with dielectric loading
US8409187B2 (en) 2009-09-08 2013-04-02 Covidien Lp Microwave antenna probe with high-strength ceramic coupler
US9113925B2 (en) 2009-09-09 2015-08-25 Covidien Lp System and method for performing an ablation procedure
US8355803B2 (en) 2009-09-16 2013-01-15 Vivant Medical, Inc. Perfused core dielectrically loaded dipole microwave antenna probe
US8685015B2 (en) 2009-09-24 2014-04-01 Covidien Lp System and method for multi-pole phase-shifted radio frequency application
US8652125B2 (en) 2009-09-28 2014-02-18 Covidien Lp Electrosurgical generator user interface
US8343145B2 (en) 2009-09-28 2013-01-01 Vivant Medical, Inc. Microwave surface ablation using conical probe
US9024237B2 (en) 2009-09-29 2015-05-05 Covidien Lp Material fusing apparatus, system and method of use
US8038693B2 (en) 2009-10-21 2011-10-18 Tyco Healthcare Group Ip Methods for ultrasonic tissue sensing and feedback
US9241762B2 (en) 2010-06-03 2016-01-26 Covidien Lp Specific absorption rate measurement and energy-delivery device characterization using image analysis
US9468492B2 (en) 2010-06-03 2016-10-18 Covidien Lp Specific absorption rate measurement and energy-delivery device characterization using image analysis
US9377367B2 (en) 2010-06-03 2016-06-28 Covidien Lp Specific absorption rate measurement and energy-delivery device characterization using thermal phantom and image analysis
US8188435B2 (en) 2010-06-03 2012-05-29 Tyco Healthcare Group Lp Specific absorption rate measurement and energy-delivery device characterization using thermal phantom and image analysis
US8636730B2 (en) 2010-07-12 2014-01-28 Covidien Lp Polarity control of electrosurgical generator
US8641712B2 (en) 2010-07-28 2014-02-04 Covidien Lp Local optimization of electrode current densities
USD673685S1 (en) 2010-09-08 2013-01-01 Vivant Medical, Inc. Microwave device spacer and positioner with arcuate slot
US8968289B2 (en) 2010-10-22 2015-03-03 Covidien Lp Microwave spacers and methods of use
US8932281B2 (en) 2011-01-05 2015-01-13 Covidien Lp Energy-delivery devices with flexible fluid-cooled shaft, inflow/outflow junctions suitable for use with same, and systems including same
US9492190B2 (en) 2011-02-09 2016-11-15 Covidien Lp Tissue dissectors
US8376948B2 (en) 2011-02-17 2013-02-19 Vivant Medical, Inc. Energy-delivery device including ultrasound transducer array and phased antenna array
US8968297B2 (en) 2011-07-19 2015-03-03 Covidien Lp Microwave and RF ablation system and related method for dynamic impedance matching
US9192422B2 (en) 2011-07-19 2015-11-24 Covidien Lp System and method of matching impedances of an electrosurgical generator and/or a microwave generator
US9028482B2 (en) 2011-07-19 2015-05-12 Covidien Lp Microwave and RF ablation system and related method for dynamic impedance matching
US9033973B2 (en) 2011-08-30 2015-05-19 Covidien Lp System and method for DC tissue impedance sensing
US9023025B2 (en) 2011-09-20 2015-05-05 Covidien Lp Handheld medical devices including microwave amplifier unit at device handle
US8745846B2 (en) 2011-09-20 2014-06-10 Covidien Lp Method of manufacturing handheld medical devices including microwave amplifier unit
US9039692B2 (en) 2011-09-20 2015-05-26 Covidien Lp Handheld medical devices including microwave amplifier unit at device handle
US9039693B2 (en) 2011-09-20 2015-05-26 Covidien Lp Handheld medical devices including microwave amplifier unit at device handle
US9033970B2 (en) 2011-09-20 2015-05-19 Covidien Lp Handheld medical devices including microwave amplifier unit at device handle
USD680220S1 (en) 2012-01-12 2013-04-16 Coviden IP Slider handle for laparoscopic device
US9168178B2 (en) 2012-05-22 2015-10-27 Covidien Lp Energy-delivery system and method for controlling blood loss from wounds
US20130324910A1 (en) 2012-05-31 2013-12-05 Covidien Lp Ablation device with drug delivery component and biopsy tissue-sampling component
US9332959B2 (en) 2012-06-26 2016-05-10 Covidien Lp Methods and systems for enhancing ultrasonic visibility of energy-delivery devices within tissue
US9439712B2 (en) 2012-07-12 2016-09-13 Covidien Lp Heat-distribution indicators, thermal zone indicators, electrosurgical systems including same and methods of directing energy to tissue using same
US9993283B2 (en) 2012-10-02 2018-06-12 Covidien Lp Selectively deformable ablation device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827056A (en) * 1955-06-21 1958-03-18 Thomas H Ballantine Jr Electrode discharge control for surgical apparatus
FR1209247A (en) * 1958-07-11 1960-02-29 Parisienne D Expl Des Etabliss Improvements in electrosurgical devices for electric scalpels and electrocoagulation
FR1255233A (en) * 1960-04-25 1961-03-03 Siemens Reiniger Werke Ag Device for automatically switching on a high-frequency surgical device
DE2455171A1 (en) * 1974-11-21 1976-08-12 Erbe Elektromedizin Bipolar coagulation forceps circuit - allows current flow only when switch is actuated and at correct resistance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827056A (en) * 1955-06-21 1958-03-18 Thomas H Ballantine Jr Electrode discharge control for surgical apparatus
FR1209247A (en) * 1958-07-11 1960-02-29 Parisienne D Expl Des Etabliss Improvements in electrosurgical devices for electric scalpels and electrocoagulation
FR1255233A (en) * 1960-04-25 1961-03-03 Siemens Reiniger Werke Ag Device for automatically switching on a high-frequency surgical device
DE2455171A1 (en) * 1974-11-21 1976-08-12 Erbe Elektromedizin Bipolar coagulation forceps circuit - allows current flow only when switch is actuated and at correct resistance

Cited By (423)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126814A1 (en) * 1983-05-24 1984-12-05 Sien-Shih Chang Electro-surgical unit control apparatus
EP0341446A2 (en) * 1988-05-09 1989-11-15 Karl Storz GmbH & Co. High frequency generator to cut and coagulate the tissues in high frequency surgery
EP0341446A3 (en) * 1988-05-09 1990-08-08 Flachenecker, Gerhard, Prof. Dr.-Ing. High frequency generator to cut and coagulate the tussues in high frequency surgery
EP0521501A2 (en) * 1991-07-04 1993-01-07 DELMA ELEKTRO-UND MEDIZINISCHE APPARATEBAU GESELLSCHAFT mbH Electrosurgical treatment instrument
EP0521501A3 (en) * 1991-07-04 1993-04-07 Delma Elektro-Und Medizinische Apparatebau Gesellschaft Mbh Electrosurgical treatment instrument
EP0558317A2 (en) * 1992-02-27 1993-09-01 G2 Design Limited Cauterising apparatus
US5423810A (en) * 1992-02-27 1995-06-13 G2 Design Limited Cauterising apparatus
EP0558317A3 (en) * 1992-02-27 1993-12-22 G2 Design Ltd Cauterising apparatus
EP0812576A1 (en) * 1996-06-14 1997-12-17 Gebr. Berchtold GmbH & Co. High frequency generator for electrosurgery
US5976128A (en) * 1996-06-14 1999-11-02 Gebrueder Berchtold Gmbh & Co. Electrosurgical high frequency generator
US6203541B1 (en) * 1999-04-23 2001-03-20 Sherwood Services Ag Automatic activation of electrosurgical generator bipolar output
US11045253B2 (en) 2002-04-16 2021-06-29 Covidien Lp Electrosurgical energy channel splitters and systems for delivering electrosurgical energy
US10039602B2 (en) 2002-04-16 2018-08-07 Covidien Lp Electrosurgical energy channel splitters and systems for delivering electrosurgical energy
US9768373B2 (en) 2003-10-30 2017-09-19 Covidien Ag Switched resonant ultrasonic power amplifier system
US8944834B2 (en) 2004-10-13 2015-02-03 Covidien Ag Universal foot switch contact port
US11013548B2 (en) 2005-03-31 2021-05-25 Covidien Ag Method and system for compensating for external impedance of energy carrying component when controlling electrosurgical generator
US9522032B2 (en) 2005-10-21 2016-12-20 Covidien Ag Circuit and method for reducing stored energy in an electrosurgical generator
US10582964B2 (en) 2006-01-24 2020-03-10 Covidien Lp Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm
US9642665B2 (en) 2006-01-24 2017-05-09 Covidien Ag Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm
US9119624B2 (en) 2006-04-24 2015-09-01 Covidien Ag ARC based adaptive control system for an electrosurgical unit
US9833287B2 (en) 2007-01-31 2017-12-05 Covidien Lp Thermal feedback systems and methods of using the same
US8956350B2 (en) 2007-01-31 2015-02-17 Covidien Lp Thermal feedback systems and methods of using the same
US10321962B2 (en) 2007-11-01 2019-06-18 Covidien Lp Method for volume determination and geometric reconstruction
US9622813B2 (en) 2007-11-01 2017-04-18 Covidien Lp Method for volume determination and geometric reconstruction
US9579151B2 (en) 2007-11-16 2017-02-28 Covidien Lp Dynamically matched microwave antenna for tissue ablation
US8655454B2 (en) 2007-11-27 2014-02-18 Covidien Lp Targeted cooling of deployable microwave antenna with cooling chamber
US8131339B2 (en) 2007-11-27 2012-03-06 Vivant Medical, Inc. System and method for field ablation prediction
US7713076B2 (en) 2007-11-27 2010-05-11 Vivant Medical, Inc. Floating connector for microwave surgical device
US7749011B2 (en) 2007-11-27 2010-07-06 Vivant Medical, Inc. Floating connector for microwave surgical device
US9305682B2 (en) 2008-01-23 2016-04-05 Covidien Lp Thermally tuned coaxial cable for microwave antennas
US10743934B2 (en) 2008-01-23 2020-08-18 Covidien Lp Choked dielectric loaded tip dipole microwave antenna
US9861439B2 (en) 2008-01-23 2018-01-09 Covidien Lp Choked dielectric loaded tip dipole microwave antenna
US7642451B2 (en) 2008-01-23 2010-01-05 Vivant Medical, Inc. Thermally tuned coaxial cable for microwave antennas
US8258399B2 (en) 2008-01-23 2012-09-04 Vivant Medical, Inc. Thermally tuned coaxial cable for microwave antennas
US10058384B2 (en) 2008-01-23 2018-08-28 Covidien Lp Choked dielectric loaded tip dipole microwave antenna
US9925002B2 (en) 2008-01-31 2018-03-27 Covidien Lp Articulating ablation device and method
US8298231B2 (en) 2008-01-31 2012-10-30 Tyco Healthcare Group Lp Bipolar scissors for adenoid and tonsil removal
US9370314B2 (en) 2008-02-07 2016-06-21 Covidien Lp Endoscopic instrument for tissue identification
US10045814B2 (en) 2008-02-07 2018-08-14 Covidien Lp Endoscopic instrument for tissue identification
US11540873B2 (en) 2008-02-07 2023-01-03 Covidien Lp Surgical instrument for tissue identification
US10631922B2 (en) 2008-02-07 2020-04-28 Covidien Lp Endoscopic instrument for tissue identification
US9522038B2 (en) 2008-03-13 2016-12-20 Covidien Lp Crest factor enhancement in electrosurgical generators
US8409186B2 (en) 2008-03-13 2013-04-02 Covidien Lp Crest factor enhancement in electrosurgical generators
US9949794B2 (en) 2008-03-27 2018-04-24 Covidien Lp Microwave ablation devices including expandable antennas and methods of use
US8257349B2 (en) 2008-03-28 2012-09-04 Tyco Healthcare Group Lp Electrosurgical apparatus with predictive RF source control
US8608733B2 (en) 2008-03-28 2013-12-17 Covidien Lp Electrosurgical apparatus with predictive RF source control
US9750571B2 (en) 2008-03-31 2017-09-05 Covidien Lp Re-hydration antenna for ablation
US9198723B2 (en) 2008-03-31 2015-12-01 Covidien Lp Re-hydration antenna for ablation
US9763728B2 (en) 2008-06-09 2017-09-19 Covidien Lp Ablation needle guide
US9700366B2 (en) 2008-08-01 2017-07-11 Covidien Lp Polyphase electrosurgical system and method
US8172836B2 (en) 2008-08-11 2012-05-08 Tyco Healthcare Group Lp Electrosurgical system having a sensor for monitoring smoke or aerosols
US8652128B2 (en) 2008-08-11 2014-02-18 Covidien Lp Electrosurgical system having a sensor for monitoring smoke or aerosols
US9173706B2 (en) 2008-08-25 2015-11-03 Covidien Lp Dual-band dipole microwave ablation antenna
US8211098B2 (en) 2008-08-25 2012-07-03 Vivant Medical, Inc. Microwave antenna assembly having a dielectric body portion with radial partitions of dielectric material
US9439730B2 (en) 2008-08-25 2016-09-13 Covidien Lp Dual-band dipole microwave ablation antenna
US9113932B1 (en) 2008-08-28 2015-08-25 Covidien Lp Microwave antenna with choke
US9707038B2 (en) 2008-08-28 2017-07-18 Covidien Lp Microwave antenna with cooled handle
US9375280B2 (en) 2008-08-28 2016-06-28 Covidien Lp Microwave antenna with cooling system
US11147620B2 (en) 2008-08-28 2021-10-19 Covidien Lp Microwave antenna with cooled hub
US9198725B2 (en) 2008-08-28 2015-12-01 Covidien Lp Microwave antenna with choke
US10022186B2 (en) 2008-08-28 2018-07-17 Covidien Lp Microwave antenna with cooled handle
US9254172B2 (en) 2008-09-03 2016-02-09 Covidien Lp Shielding for an isolation apparatus used in a microwave generator
US8394086B2 (en) 2008-09-03 2013-03-12 Vivant Medical, Inc. Microwave shielding apparatus
US8403924B2 (en) 2008-09-03 2013-03-26 Vivant Medical, Inc. Shielding for an isolation apparatus used in a microwave generator
US8968295B2 (en) 2008-09-05 2015-03-03 Covidien Lp Electrosurgical apparatus with high speed energy recovery
US8377053B2 (en) 2008-09-05 2013-02-19 Covidien Lp Electrosurgical apparatus with high speed energy recovery
US8287529B2 (en) 2008-09-05 2012-10-16 Tyco Healthcare Group Lp Electrosurgical apparatus with high speed energy recovery
US9186201B2 (en) 2008-09-05 2015-11-17 Covidien Lp Electrosurgical apparatus with high speed energy recovery
US8242782B2 (en) 2008-09-30 2012-08-14 Vivant Medical, Inc. Microwave ablation generator control system
US10070922B2 (en) 2008-09-30 2018-09-11 Covidien Lp Microwave ablation generator control system
US8180433B2 (en) 2008-09-30 2012-05-15 Vivant Medical, Inc. Microwave system calibration apparatus, system and method of use
US8797039B2 (en) 2008-09-30 2014-08-05 Covidien Lp Microwave ablation generator control system
US8346370B2 (en) 2008-09-30 2013-01-01 Vivant Medical, Inc. Delivered energy generator for microwave ablation
US8248075B2 (en) 2008-09-30 2012-08-21 Vivant Medical, Inc. System, apparatus and method for dissipating standing wave in a microwave delivery system
US9526576B2 (en) 2008-09-30 2016-12-27 Covidien Lp Microwave ablation generator control system
US8174267B2 (en) 2008-09-30 2012-05-08 Vivant Medical, Inc. Intermittent microwave energy delivery system
US10743935B2 (en) 2008-09-30 2020-08-18 Covidien Lp Microwave ablation generator control system
US8734444B2 (en) 2008-10-10 2014-05-27 Covidien Lp System and method for delivering high current to electrosurgical device
US9770287B2 (en) 2008-10-10 2017-09-26 Covidien Lp System and method for delivering high current to electrosurgical device
US10278771B2 (en) 2008-10-10 2019-05-07 Covidien Lp System and method for delivering 5 high current to electrosurgical device
US8512328B2 (en) 2008-10-13 2013-08-20 Covidien Lp Antenna assemblies for medical applications
US9375272B2 (en) 2008-10-13 2016-06-28 Covidien Lp Antenna assemblies for medical applications
US10058387B2 (en) 2008-10-13 2018-08-28 Covidien Lp Antenna assemblies for medical applications
US9113624B2 (en) 2008-10-15 2015-08-25 Covidien Lp System and method for perfusing biological organs
US10188460B2 (en) 2008-10-17 2019-01-29 Covidien Lp Choked dielectric loaded tip dipole microwave antenna
US8262652B2 (en) 2009-01-12 2012-09-11 Tyco Healthcare Group Lp Imaginary impedance process monitoring and intelligent shut-off
US8211100B2 (en) 2009-01-12 2012-07-03 Tyco Healthcare Group Lp Energy delivery algorithm for medical devices based on maintaining a fixed position on a tissue electrical conductivity v. temperature curve
US8333759B2 (en) 2009-01-12 2012-12-18 Covidien Lp Energy delivery algorithm for medical devices
US8152802B2 (en) 2009-01-12 2012-04-10 Tyco Healthcare Group Lp Energy delivery algorithm filter pre-loading
US8162932B2 (en) 2009-01-12 2012-04-24 Tyco Healthcare Group Lp Energy delivery algorithm impedance trend adaptation
US8167875B2 (en) 2009-01-12 2012-05-01 Tyco Healthcare Group Lp Energy delivery algorithm for medical devices
US8235917B2 (en) 2009-01-13 2012-08-07 Tyco Healthcare Group Lp Wireless electrosurgical controller
US8231553B2 (en) 2009-01-13 2012-07-31 Tyco Healthcare Group Lp Method for wireless control of electrosurgery
US8202270B2 (en) 2009-02-20 2012-06-19 Vivant Medical, Inc. Leaky-wave antennas for medical applications
US10080610B2 (en) 2009-02-20 2018-09-25 Covidien Lp Leaky-wave antennas for medical applications
US8968292B2 (en) 2009-02-20 2015-03-03 Covidien Lp Leaky-wave antennas for medical applications
US8197473B2 (en) 2009-02-20 2012-06-12 Vivant Medical, Inc. Leaky-wave antennas for medical applications
US8118808B2 (en) 2009-03-10 2012-02-21 Vivant Medical, Inc. Cooled dielectrically buffered microwave dipole antenna
US9522039B2 (en) 2009-03-11 2016-12-20 Covidien Lp Crest factor enhancement in electrosurgical generators
US10499998B2 (en) 2009-04-01 2019-12-10 Covidien Lp Microwave ablation system with user-controlled ablation size and method of use
US10111718B2 (en) 2009-04-01 2018-10-30 Covidien Lp Microwave ablation system with user-controlled ablation size and method of use
US9867670B2 (en) 2009-04-01 2018-01-16 Covidien Lp Microwave ablation system and user-controlled ablation size and method of use
US10045819B2 (en) 2009-04-14 2018-08-14 Covidien Lp Frequency identification for microwave ablation probes
US10758306B2 (en) 2009-04-14 2020-09-01 Covidien Lp Frequency identification for microwave ablation probes
US8353903B2 (en) 2009-05-06 2013-01-15 Vivant Medical, Inc. Power-stage antenna integrated system
US8463396B2 (en) 2009-05-06 2013-06-11 Covidien LLP Power-stage antenna integrated system with high-strength shaft
US9833286B2 (en) 2009-05-06 2017-12-05 Covidien Lp Power-stage antenna integrated system with high-strength shaft
US8216227B2 (en) 2009-05-06 2012-07-10 Vivant Medical, Inc. Power-stage antenna integrated system with junction member
US10675090B2 (en) 2009-05-19 2020-06-09 Covidien Lp Tissue impedance measurement using a secondary frequency
US9504524B2 (en) 2009-05-19 2016-11-29 Covidien Lp Tissue impedance measurement using a secondary frequency
US8246615B2 (en) 2009-05-19 2012-08-21 Vivant Medical, Inc. Tissue impedance measurement using a secondary frequency
US9662172B2 (en) 2009-05-27 2017-05-30 Covidien Lp Narrow gauge high strength choked wet tip microwave ablation antenna
US10499989B2 (en) 2009-05-27 2019-12-10 Covidien Lp Narrow gauge high strength choked wet tip microwave ablation antenna
US9192437B2 (en) 2009-05-27 2015-11-24 Covidien Lp Narrow gauge high strength choked wet tip microwave ablation antenna
US8834460B2 (en) 2009-05-29 2014-09-16 Covidien Lp Microwave ablation safety pad, microwave safety pad system and method of use
US9526575B2 (en) 2009-06-02 2016-12-27 Covidien Lp Electrosurgical devices with directional radiation pattern
US8235981B2 (en) 2009-06-02 2012-08-07 Vivant Medical, Inc. Electrosurgical devices with directional radiation pattern
US10736694B2 (en) 2009-06-02 2020-08-11 Covidien Lp Electrosurgical devices with directional radiation pattern
US8334812B2 (en) 2009-06-19 2012-12-18 Vivant Medical, Inc. Microwave ablation antenna radiation detector
US8552915B2 (en) 2009-06-19 2013-10-08 Covidien Lp Microwave ablation antenna radiation detector
US8847830B2 (en) 2009-06-19 2014-09-30 Covidien Lp Microwave ablation antenna radiation detector
US9625395B2 (en) 2009-06-19 2017-04-18 Covidien Lp Microwave ablation antenna radiation detector
US7863984B1 (en) 2009-07-17 2011-01-04 Vivant Medical, Inc. High efficiency microwave amplifier
US8328800B2 (en) 2009-08-05 2012-12-11 Vivant Medical, Inc. Directive window ablation antenna with dielectric loading
US8328799B2 (en) 2009-08-05 2012-12-11 Vivant Medical, Inc. Electrosurgical devices having dielectric loaded coaxial aperture with distally positioned resonant structure
US10213255B2 (en) 2009-08-05 2019-02-26 Covidien Lp Electrosurgical devices having dielectric loaded coaxial aperture with distally positioned resonant structure and method of manufacturing same
US8628527B2 (en) 2009-08-05 2014-01-14 Covidien Lp Directive window ablation antenna with dielectric loading
US10828100B2 (en) 2009-08-25 2020-11-10 Covidien Lp Microwave ablation with tissue temperature monitoring
US9186202B2 (en) 2009-08-28 2015-11-17 Covidien Lp Electrosurgical generator
US8790335B2 (en) 2009-08-28 2014-07-29 Covidien Lp Electrosurgical generator
US8069553B2 (en) 2009-09-09 2011-12-06 Vivant Medical, Inc. Method for constructing a dipole antenna
US10363096B2 (en) 2009-09-09 2019-07-30 Covidien Lp Method for constructing a dipole antenna
US9379444B2 (en) 2009-09-09 2016-06-28 Covidien Lp Method for constructing a dipole antenna
US9877771B2 (en) 2009-09-10 2018-01-30 Covidien Lp System and method for power supply noise reduction
US8945115B2 (en) 2009-09-10 2015-02-03 Covidien Lp System and method for power supply noise reduction
US8382751B2 (en) 2009-09-10 2013-02-26 Covidien Lp System and method for power supply noise reduction
US9375278B2 (en) 2009-09-18 2016-06-28 Covidien Lp Tissue ablation system with energy distribution
US10016237B2 (en) 2009-09-18 2018-07-10 Covidien Lp Tissue ablation system with energy distribution
US9554855B2 (en) 2009-09-18 2017-01-31 Covidien Lp Tissue ablation system with energy distribution
US9095359B2 (en) 2009-09-18 2015-08-04 Covidien Lp Tissue ablation system with energy distribution
US9375273B2 (en) 2009-09-18 2016-06-28 Covidien Lp System and method for checking high power microwave ablation system status on startup
US11039885B2 (en) 2009-09-18 2021-06-22 Covidien Lp Tissue ablation system with energy distribution
US8394087B2 (en) 2009-09-24 2013-03-12 Vivant Medical, Inc. Optical detection of interrupted fluid flow to ablation probe
US8894640B2 (en) 2009-09-24 2014-11-25 Covidien Lp Optical detection of interrupted fluid flow to ablation probe
US8377054B2 (en) 2009-09-24 2013-02-19 Covidien Lp Automatic control circuit for use in an electrosurgical generator
US8906007B2 (en) 2009-09-28 2014-12-09 Covidien Lp Electrosurgical devices, directional reflector assemblies coupleable thereto, and electrosurgical systems including same
US9622816B2 (en) 2009-09-28 2017-04-18 Covidien Lp Electrosurgical devices, directional reflector assemblies coupleable thereto, and electrosurgical systems including same
US8282632B2 (en) 2009-09-28 2012-10-09 Vivant Medical, Inc. Feedpoint optimization for microwave ablation dipole antenna with integrated tip
US9237927B2 (en) 2009-09-29 2016-01-19 Covidien Lp Flow rate monitor for fluid cooled microwave ablation probe
US9572625B2 (en) 2009-09-29 2017-02-21 Covidien Lp Flow rate monitor for fluid cooled microwave ablation probe
US8568398B2 (en) 2009-09-29 2013-10-29 Covidien Lp Flow rate monitor for fluid cooled microwave ablation probe
US9370399B2 (en) 2009-09-29 2016-06-21 Covidien Lp Flow rate monitor for fluid cooled microwave ablation probe
US9113926B2 (en) 2009-09-29 2015-08-25 Covidien Lp Management of voltage standing wave ratio at skin surface during microwave ablation
US10182866B2 (en) 2009-09-29 2019-01-22 Covidien Lp Flow rate monitor for fluid cooled microwave ablation probe
US8876814B2 (en) 2009-09-29 2014-11-04 Covidien Lp Fluid cooled choke dielectric and coaxial cable dielectric
US8545493B2 (en) 2009-09-29 2013-10-01 Covidien Lp Flow rate monitor for fluid cooled microwave ablation probe
US10675089B2 (en) 2009-09-29 2020-06-09 Covidien Lp Management of voltage standing wave ratio at skin surface during microwave ablation
US10390882B2 (en) 2009-09-29 2019-08-27 Covidien Lp Flow rate monitor for fluid cooled microwave ablation probe
US8556889B2 (en) 2009-09-29 2013-10-15 Covidien Lp Flow rate monitor for fluid cooled microwave ablation probe
US10004559B2 (en) 2009-10-27 2018-06-26 Covidien Lp System and method for monitoring ablation size
US8894641B2 (en) 2009-10-27 2014-11-25 Covidien Lp System and method for monitoring ablation size
US9943367B2 (en) 2009-10-28 2018-04-17 Covidien Lp System and method for monitoring ablation size
US8430871B2 (en) 2009-10-28 2013-04-30 Covidien Lp System and method for monitoring ablation size
US10213256B2 (en) 2009-10-28 2019-02-26 Covidien Lp System and method for monitoring ablation size
US10874459B2 (en) 2009-10-28 2020-12-29 Covidien Lp System and method for monitoring ablation size
US8469953B2 (en) 2009-11-16 2013-06-25 Covidien Lp Twin sealing chamber hub
US8779852B2 (en) 2009-11-16 2014-07-15 Covidien Lp Class resonant-H electrosurgical generators
USRE46362E1 (en) 2009-11-16 2017-04-11 Covidien Lp Twin sealing chamber hub
US8760226B2 (en) 2009-11-16 2014-06-24 Covidien Lp Class resonant-H electrosurgical generators
US9705456B2 (en) 2009-11-16 2017-07-11 Covidien Lp Class resonant-H electrosurgical generators
US8610501B2 (en) 2009-11-16 2013-12-17 Covidien Lp Class resonant-H electrosurgical generators
US8394092B2 (en) 2009-11-17 2013-03-12 Vivant Medical, Inc. Electromagnetic energy delivery devices including an energy applicator array and electrosurgical systems including same
US10039588B2 (en) 2009-12-16 2018-08-07 Covidien Lp System and method for tissue sealing
US11154345B2 (en) 2009-12-16 2021-10-26 Covidien Lp System and method for tissue sealing
US9968401B2 (en) 2009-12-18 2018-05-15 Covidien Lp Microwave ablation system with dielectric temperature probe
US9820813B2 (en) 2010-01-25 2017-11-21 Covidien Lp System and method for monitoring ablation size
US10327845B2 (en) 2010-01-25 2019-06-25 Covidien Lp System and method for monitoring ablation size
US8764744B2 (en) 2010-01-25 2014-07-01 Covidien Lp System for monitoring ablation size
US9888962B2 (en) 2010-01-29 2018-02-13 Covidien Lp Apparatus and method of use for treating blood vessels
US9713497B2 (en) 2010-01-29 2017-07-25 Covidien Lp System and method for performing an electrosurgical procedure using an ablation device with an integrated imaging device
US8491579B2 (en) 2010-02-05 2013-07-23 Covidien Lp Electrosurgical devices with choke shorted to biological tissue
US9839477B2 (en) 2010-02-19 2017-12-12 Covidien Lp Bipolar electrode probe for ablation monitoring
US8968288B2 (en) 2010-02-19 2015-03-03 Covidien Lp Ablation devices with dual operating frequencies, systems including same, and methods of adjusting ablation volume using same
US10987152B2 (en) 2010-02-19 2021-04-27 Covidien Lp Ablation devices with dual operating frequencies, systems including same, and methods of adjusting ablation volume using same
US9724159B2 (en) 2010-02-19 2017-08-08 Covidien Lp Ablation devices with dual operating frequencies, systems including same, and methods of adjusting ablation volume using same
US8617153B2 (en) 2010-02-26 2013-12-31 Covidien Lp Tunable microwave ablation probe
US9375275B2 (en) 2010-02-26 2016-06-28 Covidien Lp Tunable microwave ablation probe
US9358067B2 (en) 2010-02-26 2016-06-07 Covidien Lp Tissue ablation system with internal and external radiation sources
US8777939B2 (en) 2010-02-26 2014-07-15 Covidien Lp Self-tuning microwave ablation probe
US9700374B2 (en) 2010-02-26 2017-07-11 Covidien Lp Tunable microwave ablation probe
US10028787B2 (en) 2010-02-26 2018-07-24 Covidien Lp Tunable microwave ablation probe
US8454590B2 (en) 2010-02-26 2013-06-04 Covidien Lp Enhanced lossless current sense circuit
US9480527B2 (en) 2010-03-08 2016-11-01 Covidien Lp Microwave antenna probe having a deployable ground plane
US8672923B2 (en) 2010-03-11 2014-03-18 Covidien Lp Automated probe placement device
US9861441B2 (en) 2010-03-25 2018-01-09 Covidien Lp Microwave surface coagulator with retractable blade
US9028474B2 (en) 2010-03-25 2015-05-12 Covidien Lp Microwave surface coagulator with retractable blade
US10271901B2 (en) 2010-03-26 2019-04-30 Covidien Lp Ablation devices with adjustable radiating section lengths, electrosurgical systems including same, and methods of adjusting ablation fields using same
US9271788B2 (en) 2010-03-26 2016-03-01 Cividien LP Ablation devices with adjustable radiating section lengths, electrosurgical systems including same, and methods of adjusting ablation fields using same
US11399891B2 (en) 2010-03-26 2022-08-02 Covidien Lp System and method for controlling delivery of electrosurgical energy to tissue
US10039601B2 (en) 2010-03-26 2018-08-07 Covidien Lp Ablation devices with adjustable radiating section lengths, electrosurgical systems including same, and methods of adjusting ablation fields using same
US9867664B2 (en) 2010-05-03 2018-01-16 Covidien Lp System and method of deploying an antenna assembly
US10966784B2 (en) 2010-05-11 2021-04-06 Covidien Lp Electrosurgical devices with balun structure
US9888963B2 (en) 2010-05-11 2018-02-13 Covidien Lp Electrosurgical devices with balun structure for air exposure of antenna radiating section and method of directing energy to tissue using same
US9192436B2 (en) 2010-05-25 2015-11-24 Covidien Lp Flow rate verification monitor for fluid-cooled microwave ablation probe
US10251701B2 (en) 2010-05-25 2019-04-09 Covidien Lp Flow rate verification monitor for fluid-cooled microwave ablation probe
US9668812B2 (en) 2010-05-25 2017-06-06 Covidien Lp Flow rate verification monitor for fluid-cooled microwave ablation probe
US9603663B2 (en) 2010-05-26 2017-03-28 Covidien Lp System and method for chemically cooling an ablation antenna
US9301803B2 (en) 2010-05-26 2016-04-05 Covidien Lp System and method for chemically cooling an ablation antenna
US8668690B2 (en) 2010-06-03 2014-03-11 Covidien Lp Apparatus and method for optimal tissue separation
US9522041B2 (en) 2010-06-25 2016-12-20 Covidien Lp Current-fed push-pull converter with passive voltage clamp
US8617154B2 (en) 2010-06-25 2013-12-31 Covidien Lp Current-fed push-pull converter with passive voltage clamp
US9375276B2 (en) 2010-06-30 2016-06-28 Covidien Lp Microwave antenna having a reactively-loaded loop configuration
US8623007B2 (en) 2010-06-30 2014-01-07 Covidien Lp Electrosurgical generator to ablation device adaptor
US9549778B2 (en) 2010-06-30 2017-01-24 Covidien Lp Adjustable tuning of a dielectrically loaded loop antenna
US8974449B2 (en) 2010-07-16 2015-03-10 Covidien Lp Dual antenna assembly with user-controlled phase shifting
US9713496B2 (en) 2010-07-16 2017-07-25 Covidien Lp Dual antenna assembly with user-controlled phase shifting
US11517367B2 (en) 2010-07-19 2022-12-06 Covidien Lp Hydraulic conductivity monitoring to initiate tissue division
US10588684B2 (en) 2010-07-19 2020-03-17 Covidien Lp Hydraulic conductivity monitoring to initiate tissue division
US9943366B2 (en) 2010-09-08 2018-04-17 Covidien Lp Microwave spacers and method of use
US9119647B2 (en) 2010-11-12 2015-09-01 Covidien Lp Apparatus, system and method for performing an electrosurgical procedure
US9526577B2 (en) 2010-11-12 2016-12-27 Covidien Lp Apparatus, system and method for performing an electrosurgical procedure
US9028484B2 (en) 2010-11-16 2015-05-12 Covidien Lp Fingertip electrosurgical instruments for use in hand-assisted surgery and systems including same
US9044253B2 (en) 2010-12-23 2015-06-02 Covidien Lp Microwave field-detecting needle assemblies, methods of manufacturing same, methods of adjusting an ablation field radiating into tissue using same, and systems including same
US9743985B2 (en) 2010-12-23 2017-08-29 Covidien Lp Microwave field-detecting needle assemblies, methods of manufacturing same, methods of adjusting an ablation field radiating into tissue using same, and systems including same
US9055957B2 (en) 2010-12-23 2015-06-16 Covidien Lp Microwave field-detecting needle assemblies, methods of manufacturing same, methods of adjusting an ablation field radiating into tissue using same, and systems including same
US9375279B2 (en) 2010-12-23 2016-06-28 Covidien Lp Methods of adjusting an ablation field radiating into tissue using microwave field-detecting needle assemblies
US9937003B2 (en) 2011-01-05 2018-04-10 Covidien Lp Energy-delivery devices with flexible fluid-cooled shaft, inflow/outflow junctions suitable for use with same, and systems including same
US10123837B2 (en) 2011-01-05 2018-11-13 Covidien Lp Energy-delivery devices with flexible fluid-cooled shaft, inflow / outflow junctions suitable for use with same, and systems including same
US9028481B2 (en) 2011-01-05 2015-05-12 Covidien Lp System and method for measuring current of an electrosurgical generator
US9770294B2 (en) 2011-01-05 2017-09-26 Covidien Lp Energy-delivery devices with flexible fluid-cooled shaft, inflow/outflow junctions suitable for use with same, and systems including same
US11058488B2 (en) 2011-01-05 2021-07-13 Covidien Lp Energy-delivery devices with flexible fluid-cooled shaft, inflow / outflow junctions suitable for use with same, and systems including same
US9987069B2 (en) 2011-01-05 2018-06-05 Covidien Lp System and method for measuring current of an electrosurgical generator
US10238452B2 (en) 2011-02-03 2019-03-26 Covidien Lp Dual antenna microwave resection and ablation device, system and method of use
US9814525B2 (en) 2011-02-03 2017-11-14 Covidien Lp System and method for ablation procedure monitoring using electrodes
US9301804B2 (en) 2011-02-03 2016-04-05 Covidien Lp Dual antenna microwave resection and ablation device, system and method of use
US9192441B2 (en) 2011-02-17 2015-11-24 Covidien Lp Energy-delivery device including ultrasound transducer array and phased antenna array, and methods of adjusting an ablation field radiating into tissue using same
US10507054B2 (en) 2011-02-25 2019-12-17 Covidien Lp System and method for detecting and supressing arc formation during an electrosurgical procedure
US9265560B2 (en) 2011-02-25 2016-02-23 Covidien Lp System and method for detecting and suppressing arc formation during an electrosurgical procedure
US11147622B2 (en) 2011-03-09 2021-10-19 Covidien Lp Systems for thermal-feedback-controlled rate of fluid flow to fluid-cooled antenna assembly and methods of directing energy to tissue using same
US10335230B2 (en) 2011-03-09 2019-07-02 Covidien Lp Systems for thermal-feedback-controlled rate of fluid flow to fluid-cooled antenna assembly and methods of directing energy to tissue using same
US9375247B2 (en) 2011-03-16 2016-06-28 Covidien Lp System and method for electrosurgical generator power measurement
US9739814B2 (en) 2011-03-16 2017-08-22 Covidien Lp System and method for electrosurgical generator power management
US9381059B2 (en) 2011-04-05 2016-07-05 Covidien Lp Electrically-insulative hinge for electrosurgical jaw assembly, bipolar forceps including same, and methods of jaw-assembly alignment using fastened electrically-insulative hinge
US11478295B2 (en) 2011-04-05 2022-10-25 Covidien Lp Electrically-insulative hinge for electrosurgical jaw assembly, bipolar forceps including same, and methods of jaw-assembly alignment using fastened electrically-insulative hinge
US10441351B2 (en) 2011-04-05 2019-10-15 Covidien Lp Electrically-insulative hinge for electrosurgical jaw assembly, bipolar forceps including same, and methods of jaw-assembly alignment using fastened electrically-insulative hinge
US10610298B2 (en) 2011-04-08 2020-04-07 Covidien Lp Microwave ablation instrument with interchangeable antenna probe
US10363094B2 (en) 2011-04-08 2019-07-30 Covidien Lp Flexible microwave catheters for natural or artificial lumens
US10098697B2 (en) 2011-04-08 2018-10-16 Covidien Lp Microwave tissue dissection and coagulation
US10799290B2 (en) 2011-04-08 2020-10-13 Covidien Lp Microwave tissue dissection and coagulation
US8968293B2 (en) 2011-04-12 2015-03-03 Covidien Lp Systems and methods for calibrating power measurements in an electrosurgical generator
US9539050B2 (en) 2011-04-12 2017-01-10 Covidien Lp System and method for process monitoring and intelligent shut-off
US10543038B2 (en) 2011-04-12 2020-01-28 Covidien Lp System and method for process monitoring and intelligent shut-off
US9918775B2 (en) 2011-04-12 2018-03-20 Covidien Lp Systems and methods for calibrating power measurements in an electrosurgical generator
US9050089B2 (en) 2011-05-31 2015-06-09 Covidien Lp Electrosurgical apparatus with tissue site sensing and feedback control
US10588693B2 (en) 2011-05-31 2020-03-17 Covidien Lp Modified wet tip antenna design
US9808259B2 (en) 2011-07-15 2017-11-07 Covidien Lp Clip-over disposable assembly for use with hemostat-style surgical instrument and methods of manufacturing same
US10869674B2 (en) 2011-07-15 2020-12-22 Covidien Lp Clip-over disposable assembly for use with hemostat-style surgical instrument and methods of manufacturing same
US9113891B2 (en) 2011-07-15 2015-08-25 Covidien Lp Clip-over disposable assembly for use with hemostat-style surgical instrument and methods of manufacturing same
US10413347B2 (en) 2011-08-01 2019-09-17 Covidien Lp Electrosurgical apparatus with real-time RF tissue energy control
US10993761B2 (en) 2011-08-01 2021-05-04 Covidien Lp Electrosurgical apparatus with real-time RF tissue energy control
US9028479B2 (en) 2011-08-01 2015-05-12 Covidien Lp Electrosurgical apparatus with real-time RF tissue energy control
US10675091B2 (en) 2011-08-09 2020-06-09 Covidien Lp Microwave antenna having a coaxial cable with an adjustable outer conductor configuration
US9724158B2 (en) 2011-08-09 2017-08-08 Covidien Lp Microwave antenna having a coaxial cable with an adjustable outer conductor configuration
US9543750B2 (en) 2011-09-09 2017-01-10 Covidien Lp Surgical generator and related method for mitigating overcurrent conditions
US9099863B2 (en) 2011-09-09 2015-08-04 Covidien Lp Surgical generator and related method for mitigating overcurrent conditions
US11076906B2 (en) 2011-09-28 2021-08-03 Covidien Lp Logarithmic amplifier, electrosurgical generator including same, and method of controlling electrosurgical generator using same
US10376301B2 (en) 2011-09-28 2019-08-13 Covidien Lp Logarithmic amplifier, electrosurgical generator including same, and method of controlling electrosurgical generator using same
US9247994B2 (en) 2012-01-05 2016-02-02 Covidien Lp Ablation systems, probes, and methods for reducing radiation from an ablation probe into the environment
US9522042B2 (en) 2012-01-05 2016-12-20 Covidien Lp Ablation systems, probes, and methods for reducing radiation from an ablation probe into the environment
US9848951B2 (en) 2012-01-05 2017-12-26 Covidien Lp Ablation systems, probes, and methods for reducing radiation from an ablation probe into the environment
US9925005B2 (en) 2012-01-05 2018-03-27 Covidien Lp Ablation systems, probes, and methods for reducing radiation from an ablation probe into the environment
US9693823B2 (en) 2012-01-06 2017-07-04 Covidien Lp System and method for treating tissue using an expandable antenna
US10271902B2 (en) 2012-01-06 2019-04-30 Covidien Lp System and method for treating tissue using an expandable antenna
US9681916B2 (en) 2012-01-06 2017-06-20 Covidien Lp System and method for treating tissue using an expandable antenna
US10076383B2 (en) 2012-01-25 2018-09-18 Covidien Lp Electrosurgical device having a multiplexer
US9037447B2 (en) 2012-01-27 2015-05-19 Covidien Lp Systems and methods for phase predictive impedance loss model calibration and compensation
US8664934B2 (en) 2012-01-27 2014-03-04 Covidien Lp System and method for verifying the operating frequency of digital control circuitry
US9116184B2 (en) 2012-01-27 2015-08-25 Covidien Lp System and method for verifying the operating frequency of digital control circuitry
US9480523B2 (en) 2012-01-27 2016-11-01 Covidien Lp Systems and methods for phase predictive impedance loss model calibration and compensation
US9375277B2 (en) 2012-03-14 2016-06-28 Covidien Lp Microwave ablation generator control system
US10022185B2 (en) 2012-03-14 2018-07-17 Covidien Lp Microwave ablation generator control system
US8968290B2 (en) 2012-03-14 2015-03-03 Covidien Lp Microwave ablation generator control system
US8653994B2 (en) 2012-03-21 2014-02-18 Covidien Lp System and method for detection of ADC errors
US9198711B2 (en) 2012-03-22 2015-12-01 Covidien Lp Electrosurgical system for communicating information embedded in an audio tone
US9192308B2 (en) 2012-03-27 2015-11-24 Covidien Lp Microwave-shielded tissue sensor probe
US9597151B2 (en) 2012-04-05 2017-03-21 Covidien Lp Electrosurgical tissue ablation systems and methods capable of detecting excessive bending of a probe and alerting a user
US10799282B2 (en) 2012-04-09 2020-10-13 Covidien Lp Method for employing single fault safe redundant signals
US9375250B2 (en) 2012-04-09 2016-06-28 Covidien Lp Method for employing single fault safe redundant signals
US10105174B2 (en) 2012-04-09 2018-10-23 Covidien Lp Method for employing single fault safe redundant signals
US8932291B2 (en) 2012-04-13 2015-01-13 Covidien Lp Electrosurgical systems
US9943359B2 (en) 2012-04-30 2018-04-17 Covidien Lp Limited reuse ablation needles and ablation devices for use therewith
US9700370B2 (en) 2012-04-30 2017-07-11 Covidien Lp Limited reuse ablation needles and ablation devices for use therewith
US10405918B2 (en) 2012-04-30 2019-09-10 Covidien Lp Limited reuse ablation needles and ablation devices for use therewith
US10130416B2 (en) 2012-04-30 2018-11-20 Covidien Lp Limited reuse ablation needles and ablation devices for use therewith
US9364278B2 (en) 2012-04-30 2016-06-14 Covidien Lp Limited reuse ablation needles and ablation devices for use therewith
US9271792B2 (en) 2012-05-04 2016-03-01 Covidien Lp Peripheral switching device for microwave energy platforms
US9693824B2 (en) 2012-05-04 2017-07-04 Covidien Lp Peripheral switching device for microwave energy platforms
US9770284B2 (en) 2012-05-11 2017-09-26 Covidien Lp System and method for directing energy to tissue
US9375249B2 (en) 2012-05-11 2016-06-28 Covidien Lp System and method for directing energy to tissue
US9198721B2 (en) 2012-05-22 2015-12-01 Covidien Lp Electrosurgical instrument
US9526569B2 (en) 2012-05-22 2016-12-27 Covidien Lp Electrosurgical instrument
US9974606B2 (en) 2012-05-22 2018-05-22 Covidien Lp Electrosurgical instrument
US9192424B2 (en) 2012-05-31 2015-11-24 Covidien Lp AC active load
US9121774B2 (en) 2012-06-22 2015-09-01 Covidien Lp Microwave thermometry for microwave ablation systems
US10363095B2 (en) 2012-06-22 2019-07-30 Covidien Lp Microwave thermometry for microwave ablation systems
US9127989B2 (en) 2012-06-22 2015-09-08 Covidien Lp Microwave thermometry for microwave ablation systems
US9151680B2 (en) 2012-06-22 2015-10-06 Covidien Lp Microwave thermometry for microwave ablation systems
US9743986B2 (en) 2012-06-22 2017-08-29 Covidien Lp Microwave thermometry for microwave ablation systems
US9375198B2 (en) 2012-06-26 2016-06-28 Covidien Lp Methods and systems for enhancing ultrasonic visibility of energy-delivery devices within tissue
US10682173B2 (en) 2012-06-26 2020-06-16 Covidien Lp System and method for testing electrosurgical generators
US9566111B2 (en) 2012-06-26 2017-02-14 Covidien Lp Ablation device having an expandable chamber for anchoring the ablation device to tissue
US9833288B2 (en) 2012-06-26 2017-12-05 Covidien Lp Methods and systems for enhancing ultrasonic visibilty of energy-delivery devices within tissue
US9192425B2 (en) 2012-06-26 2015-11-24 Covidien Lp System and method for testing electrosurgical generators
US9763726B2 (en) 2012-06-26 2017-09-19 Covidien Lp System and method for testing electrosurgical generators
US10073125B2 (en) 2012-06-29 2018-09-11 Covidien Lp Systems and methods for measuring the frequency of signals generated by high frequency medical devices
US9192439B2 (en) 2012-06-29 2015-11-24 Covidien Lp Method of manufacturing a surgical instrument
US11510732B2 (en) 2012-06-29 2022-11-29 Covidien Lp Microwave antenna probes
US10338115B2 (en) 2012-06-29 2019-07-02 Covidien Lp Systems and methods for measuring the frequency of signals generated by high frequency medical devices
US9529025B2 (en) 2012-06-29 2016-12-27 Covidien Lp Systems and methods for measuring the frequency of signals generated by high frequency medical devices
US9901398B2 (en) 2012-06-29 2018-02-27 Covidien Lp Microwave antenna probes
US9375252B2 (en) 2012-08-02 2016-06-28 Covidien Lp Adjustable length and/or exposure electrodes
US9370398B2 (en) 2012-08-07 2016-06-21 Covidien Lp Microwave ablation catheter and method of utilizing the same
US9044254B2 (en) 2012-08-07 2015-06-02 Covidien Lp Microwave ablation catheter and method of utilizing the same
US9247993B2 (en) 2012-08-07 2016-02-02 Covidien, LP Microwave ablation catheter and method of utilizing the same
US9259269B2 (en) 2012-08-07 2016-02-16 Covidien Lp Microwave ablation catheter and method of utilizing the same
US9993295B2 (en) 2012-08-07 2018-06-12 Covidien Lp Microwave ablation catheter and method of utilizing the same
US9993296B2 (en) 2012-08-07 2018-06-12 Covidien Lp Microwave ablation catheter and method of utilizing the same
US11678934B2 (en) 2012-08-07 2023-06-20 Covidien Lp Microwave ablation system
US10271829B2 (en) 2012-10-02 2019-04-30 Covidien Lp Heat-sensitive optical probes
US9662165B2 (en) 2012-10-02 2017-05-30 Covidien Lp Device and method for heat-sensitive agent application
US9668802B2 (en) 2012-10-02 2017-06-06 Covidien Lp Devices and methods for optical detection of tissue contact
US9743975B2 (en) 2012-10-02 2017-08-29 Covidien Lp Thermal ablation probe for a medical device
US10213257B2 (en) 2012-10-02 2019-02-26 Covidien Lp Devices and methods for optical detection of tissue contact
US9861425B2 (en) 2012-10-02 2018-01-09 Covidien Lp System and method for using resonance phasing for measuring impedance
US10080603B2 (en) 2012-10-02 2018-09-25 Covidien Lp Devices and methods for optical detection of tissue contact
US9901399B2 (en) 2012-12-17 2018-02-27 Covidien Lp Ablation probe with tissue sensing configuration
US9921243B2 (en) 2012-12-17 2018-03-20 Covidien Lp System and method for voltage and current sensing
US10828102B2 (en) 2012-12-17 2020-11-10 Covidien Lp Ablation probe with tissue sensing configuration
US9456862B2 (en) 2013-02-19 2016-10-04 Covidien Lp Electrosurgical generator and system
US10258407B2 (en) 2013-02-19 2019-04-16 Covidien Lp Electrosurgical generator and system
US9895186B2 (en) 2013-03-11 2018-02-20 Covidien Systems and methods for detecting abnormalities within a circuit of an electrosurgical generator
US9270202B2 (en) 2013-03-11 2016-02-23 Covidien Lp Constant power inverter with crest factor control
US9519021B2 (en) 2013-03-11 2016-12-13 Covidien Lp Systems and methods for detecting abnormalities within a circuit of an electrosurgical generator
US10842563B2 (en) 2013-03-15 2020-11-24 Covidien Lp System and method for power control of electrosurgical resonant inverters
US9283028B2 (en) 2013-03-15 2016-03-15 Covidien Lp Crest-factor control of phase-shifted inverter
US9498276B2 (en) 2013-03-15 2016-11-22 Covidien Lp Systems and methods for narrowband real impedance control in electrosurgery
US10383688B2 (en) 2013-03-29 2019-08-20 Covidien Lp Step-down coaxial microwave ablation applicators and methods for manufacturing same
US9987087B2 (en) 2013-03-29 2018-06-05 Covidien Lp Step-down coaxial microwave ablation applicators and methods for manufacturing same
US11382692B2 (en) 2013-03-29 2022-07-12 Covidien Lp Step-down coaxial microwave ablation applicators and methods for manufacturing same
US9610122B2 (en) 2013-03-29 2017-04-04 Covidien Lp Step-down coaxial microwave ablation applicators and methods for manufacturing same
US9504516B2 (en) 2013-05-31 2016-11-29 Covidien LLP Gain compensation for a full bridge inverter
US10603098B2 (en) 2013-05-31 2020-03-31 Covidien Lp Gain compensation for a full bridge inverter
US11191584B2 (en) 2013-06-24 2021-12-07 Covidien Lp Dead-time optimization of resonant inverters based on an input voltage of a tank
US9559594B2 (en) 2013-06-24 2017-01-31 Covidien Lp Dead-time optimization of resonant inverters
US10729484B2 (en) 2013-07-16 2020-08-04 Covidien Lp Electrosurgical generator with continuously and arbitrarily variable crest factor
US10610285B2 (en) 2013-07-19 2020-04-07 Covidien Lp Electrosurgical generators
US11135001B2 (en) 2013-07-24 2021-10-05 Covidien Lp Systems and methods for generating electrosurgical energy using a multistage power converter
US9872719B2 (en) 2013-07-24 2018-01-23 Covidien Lp Systems and methods for generating electrosurgical energy using a multistage power converter
US9655670B2 (en) 2013-07-29 2017-05-23 Covidien Lp Systems and methods for measuring tissue impedance through an electrosurgical cable
US10285750B2 (en) 2013-07-29 2019-05-14 Covidien Lp Systems and methods for operating an electrosurgical generator
US9636165B2 (en) 2013-07-29 2017-05-02 Covidien Lp Systems and methods for measuring tissue impedance through an electrosurgical cable
US9814844B2 (en) 2013-08-27 2017-11-14 Covidien Lp Drug-delivery cannula assembly
US9867665B2 (en) 2013-09-06 2018-01-16 Covidien Lp Microwave ablation catheter, handle, and system
US11324551B2 (en) 2013-09-06 2022-05-10 Covidien Lp Microwave ablation catheter, handle, and system
US11864829B2 (en) 2013-09-06 2024-01-09 Covidien Lp Microwave ablation catheter, handle, and system
US10561463B2 (en) 2013-09-06 2020-02-18 Covidien Lp Microwave ablation catheter, handle, and system
US10201265B2 (en) 2013-09-06 2019-02-12 Covidien Lp Microwave ablation catheter, handle, and system
US9839469B2 (en) 2013-09-24 2017-12-12 Covidien Lp Systems and methods for improving efficiency of electrosurgical generators
US9770283B2 (en) 2013-09-24 2017-09-26 Covidien Lp Systems and methods for improving efficiency of electrosurgical generators
US10980595B2 (en) 2013-09-26 2021-04-20 Covidien Lp Systems and methods for estimating tissue parameters using surgical devices
US11717339B2 (en) 2013-09-26 2023-08-08 Covidien Lp Systems and methods for estimating tissue parameters using surgical devices
US10130412B2 (en) 2013-09-26 2018-11-20 Covidien Lp Systems and methods for estimating tissue parameters using surgical devices
US9867651B2 (en) 2013-09-26 2018-01-16 Covidien Lp Systems and methods for estimating tissue parameters using surgical devices
US10058374B2 (en) 2013-09-26 2018-08-28 Covidien Lp Systems and methods for estimating tissue parameters using surgical devices
US11241272B2 (en) 2013-09-30 2022-02-08 Covidien Lp Bipolar electrosurgical instrument with movable electrode and related systems and methods
US10631914B2 (en) 2013-09-30 2020-04-28 Covidien Lp Bipolar electrosurgical instrument with movable electrode and related systems and methods
US10188446B2 (en) 2013-10-16 2019-01-29 Covidien Lp Resonant inverter
US10105172B2 (en) 2013-10-16 2018-10-23 Covidien Lp Radiofrequency amplifier impedance optimization
US9913679B2 (en) 2013-10-16 2018-03-13 Covidien Lp Electrosurgical systems and methods for monitoring power dosage
US10898257B2 (en) 2013-10-29 2021-01-26 Covidien Lp Resonant inverter with a common mode choke
US9642670B2 (en) 2013-10-29 2017-05-09 Covidien Lp Resonant inverter with a common mode choke
US9901385B2 (en) 2014-01-13 2018-02-27 Covidien Lp Systems and methods for multifrequency cable compensation
US9901386B2 (en) 2014-01-13 2018-02-27 Covidien Lp Systems and methods for multifrequency cable compensation
US11607264B2 (en) 2014-04-04 2023-03-21 Covidien Lp Systems and methods for calculating tissue impedance in electrosurgery
US9949783B2 (en) 2014-04-04 2018-04-24 Covidien Lp Systems and methods for optimizing emissions from simultaneous activation of electrosurgery generators
US9987068B2 (en) 2014-04-04 2018-06-05 Covidien Lp Systems and methods for optimizing emissions from simultaneous activation of electrosurgery generators
US9974595B2 (en) 2014-04-04 2018-05-22 Covidien Lp Systems and methods for optimizing emissions from simultaneous activation of electrosurgery generators
US10492850B2 (en) 2014-04-04 2019-12-03 Covidien Lp Systems and methods for calculating tissue impedance in electrosurgery
US10624697B2 (en) 2014-08-26 2020-04-21 Covidien Lp Microwave ablation system
US11974805B2 (en) 2014-08-26 2024-05-07 Covidien Lp Microwave ablation system
US11839426B2 (en) 2014-10-01 2023-12-12 Covidien Lp Miniaturized microwave ablation assembly
US10813691B2 (en) 2014-10-01 2020-10-27 Covidien Lp Miniaturized microwave ablation assembly
US10568680B2 (en) 2014-11-21 2020-02-25 Covidien Lp Electrosurgical system for multi-frequency interrogation of parasitic parameters of an electrosurgical instrument
US10188448B2 (en) 2014-11-21 2019-01-29 Covidien Lp Electrosurgical system for multi-frequency interrogation of parasitic parameters of an electrosurgical instrument
US10278764B2 (en) 2014-12-02 2019-05-07 Covidien Lp Electrosurgical generators and sensors
US10281496B2 (en) 2014-12-02 2019-05-07 Covidien Lp Electrosurgical generators and sensors
US9782212B2 (en) 2014-12-02 2017-10-10 Covidien Lp High level algorithms
US10987154B2 (en) 2014-12-02 2021-04-27 Covidien Lp Electrosurgical generators and sensors
US10292753B2 (en) 2014-12-02 2019-05-21 Covidien Lp Electrosurgical generators and sensors
US10080600B2 (en) 2015-01-21 2018-09-25 Covidien Lp Monopolar electrode with suction ability for CABG surgery
US11129667B2 (en) 2015-04-23 2021-09-28 Covidien Lp Systems and methods for controlling power in an electrosurgical generator
US11090106B2 (en) 2015-04-23 2021-08-17 Covidien Lp Control systems for electrosurgical generator
US11969201B2 (en) 2015-04-23 2024-04-30 Covidien Lp Control systems for electrosurgical generator
US10617463B2 (en) 2015-04-23 2020-04-14 Covidien Lp Systems and methods for controlling power in an electrosurgical generator
US10813692B2 (en) 2016-02-29 2020-10-27 Covidien Lp 90-degree interlocking geometry for introducer for facilitating deployment of microwave radiating catheter
US10772673B2 (en) 2016-05-02 2020-09-15 Covidien Lp Surgical energy system with universal connection features
US10869712B2 (en) 2016-05-02 2020-12-22 Covidien Lp System and method for high frequency leakage reduction through selective harmonic elimination in electrosurgical generators
US11369429B2 (en) 2016-05-05 2022-06-28 Covidien Lp Advanced simultaneous activation algorithm
US11806067B2 (en) 2016-05-05 2023-11-07 Covidien Lp Advanced simultaneous activation algorithm
US10610287B2 (en) 2016-05-05 2020-04-07 Covidien Lp Advanced simultaneous activation algorithm
US10376309B2 (en) 2016-08-02 2019-08-13 Covidien Lp Ablation cable assemblies and a method of manufacturing the same
US11197715B2 (en) 2016-08-02 2021-12-14 Covidien Lp Ablation cable assemblies and a method of manufacturing the same
US11065053B2 (en) 2016-08-02 2021-07-20 Covidien Lp Ablation cable assemblies and a method of manufacturing the same
US11000332B2 (en) 2016-08-02 2021-05-11 Covidien Lp Ablation cable assemblies having a large diameter coaxial feed cable reduced to a small diameter at intended site
US11006997B2 (en) 2016-08-09 2021-05-18 Covidien Lp Ultrasonic and radiofrequency energy production and control from a single power converter
US10814128B2 (en) 2016-11-21 2020-10-27 Covidien Lp Electroporation catheter
US10716619B2 (en) 2017-06-19 2020-07-21 Covidien Lp Microwave and radiofrequency energy-transmitting tissue ablation systems
US11744631B2 (en) 2017-09-22 2023-09-05 Covidien Lp Systems and methods for controlled electrosurgical coagulation
US11272975B2 (en) 2017-09-22 2022-03-15 Covidien Lp Systems and methods for controlled electrosurgical dissection
US11534226B2 (en) 2017-09-22 2022-12-27 Covidien Lp Systems and methods for minimizing arcing of bipolar forceps
US11147621B2 (en) 2017-11-02 2021-10-19 Covidien Lp Systems and methods for ablating tissue
US11123094B2 (en) 2017-12-13 2021-09-21 Covidien Lp Ultrasonic surgical instruments and methods for sealing and/or cutting tissue
US11160600B2 (en) 2018-03-01 2021-11-02 Covidien Lp Monopolar return electrode grasper with return electrode monitoring

Also Published As

Publication number Publication date
FR2502935B1 (en) 1985-10-04

Similar Documents

Publication Publication Date Title
FR2502935A1 (en) Diathermic knife for coagulating tissues - has monitoring current added to HF coagulating current in order to control end of operation as function or resistance of coagulating tissues
JP3857337B2 (en) Impedance feedback monitor for electrosurgical tools
US6203541B1 (en) Automatic activation of electrosurgical generator bipolar output
JP5876291B2 (en) Method, system and apparatus for performing electrosurgery
CA2038192C (en) Gas coagulation device
US6855142B2 (en) Electrosurgical device for treating body tissue with high-frequency power
US7074217B2 (en) Radio-frequency generator for powering an ablation device
US20070173807A1 (en) Devices and methods for controlling movement of an electrosurgical electrode
JPH05337131A (en) Cautery device
EP2329782B1 (en) Electrosurgical device
US20120179155A1 (en) Radio-Frequency Generator for Powering an Ablation Device
GB2470189A (en) Electrosurgical generator with tissue boiling detection having time delay
KR20160029706A (en) An arrangement for contact coagulation of biological tissue
CN110478030B (en) Apparatus and method for generating plasma in an aqueous environment
CN109496142B (en) Electrosurgical system and electrosurgical generator for treating tissue
KR20180110602A (en) Generator for supplying a coagulation instrument and control method for same
JP2014226561A (en) Coagulation device with energy control
JP5216994B2 (en) Microwave surgical device
US9393038B2 (en) High frequency surgical device and high frequency surgical system with a voltage limiter
CN102176875A (en) Electric surgery apparatus and method for controlling electric surgery apparatus
WO2014141530A1 (en) Treatment device and treatment method
JP2011509107A (en) High frequency generator for ablation by electronic surgery
JP7457016B2 (en) electrosurgical system
US10166063B2 (en) Device for detecting metal when biological tissue is acted on by means of a sparking electrosurgical instrument
WO2003105708A1 (en) Resectoscope

Legal Events

Date Code Title Description
ST Notification of lapse