JPH1157001A - Extravascular administration detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect correctly a change in the condition of an epidermis being raised and notify of it when an aliform needle is attached extravascularly, by arranging an epidermis condition detector near the aliform needle in the intravascular administration of a drug solution to a patient, using the aliform needle. SOLUTION: In the intravascular administration of a drug solution such as a glucose solution through a tube 1, to a patient, using an aliform needle by puncturing a prescribed position of the arm 10 of the patient, a pressure sensor 3b is fixed near the aliform needle 2 with a strap 3a. Information obtained from the pressure sensor 3b is outputted to an alarm 4 through a cable 3c. When the aliform needle is attached extravascularly, a drug solution introduced is accumulated under the skin of the arm 10, raising the skin gradually. When the epidermis is raised, the average value or the minimum value of detection values of the pressure sensor 3b within a prescribed period of time increases gradually. If it exceeds a prescribed detection value, it is considered an abnormality, and the fact is notified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extravascular administration detecting device, and more particularly to an extravascular administration detecting device for detecting that a drug solution is being administered outside a blood vessel of a patient by detecting a change in epidermal condition. The present invention relates to an extravascular administration detecting device which can be used.

[0002]

2. Description of the Related Art When a glucose solution, a physiological saline solution, a contrast medium, and other medical solutions are administered to a patient, a winged needle is introduced into a blood vessel, and the medical solution is directly injected into the blood vessel of the patient. The treatment to be administered is performed.

In this case, if the tip of the winged needle is correctly introduced into the blood vessel, the drug solution flows into the blood vessel sequentially. However, when the tip of the winged needle comes off the blood vessel, the drug solution is introduced subcutaneously and accumulates subcutaneously. As a result, the medicinal solution introduced subcutaneously stays near the tip of the winged needle and lifts the epidermis.

[0004] This condition is often clarified by a doctor, a nurse, or the like or a patient's own, and it is necessary to re-insert the winged needle again. As described above, the present state of the art is to know for the first time that the tip of the winged needle is detached from the blood vessel by visually detecting the change in the state of the epidermis where the epidermis is lifted.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and when the tip of a winged needle is detached from a blood vessel, the winged needle is detected irrespective of the visual detection of lifting of the epidermis. Is to provide an extravascular administration detecting device capable of detecting that the distal end of the device is detached from the blood vessel.

[0006]

In the extravascular administration detecting device according to the present invention, when administering a drug solution into a patient's blood vessel using a winged needle or the like, the drug solution is administered outside the blood vessel. An extravascular administration detection device for detecting a skin condition detection device disposed near the winged needle or the like, and a predetermined signal for notifying a predetermined signal based on information obtained from the skin condition detection device. A signal notification device.

[0007] According to the extravascular administration detecting device having the above-mentioned configuration, by disposing the epidermis condition detecting device near the winged needle or the like, when the winged needle is attached outside the blood vessel, the extravascular administration is performed. The medicinal solution will lift the patient's epidermis.

[0008] As described above, the change in the epidermis state that the epidermis of the patient is lifted is detected by the epidermis state detection device, and based on this information, the drug solution is administered to the outside of the blood vessel using the signal notification device. It is possible to notify a patient, a doctor or a nurse that the patient is present, or to stop the medical solution administration device or the like.

In the above extravascular administration detecting device,
As a more preferred specific example, a pressure detecting device is fixed to the patient as a skin condition detecting device using a fixing device. As a result, when the epidermis state changes, pressure is applied to the pressure detecting device disposed between the fixing device and the patient's epidermis. Therefore, for example, when the average pressure within a predetermined time is applied to the pressure detecting device so as to be equal to or more than a predetermined value, it is possible to determine that the drug solution is being administered outside the blood vessel, and based on this information, By using the signal notification device, it is possible to notify a patient, a doctor, a nurse, or the like that a drug solution is being administered outside a blood vessel, or to stop the drug solution administration device or the like.

In the above extravascular administration detecting device,
As another more preferred example, as the skin state detecting device, a flexible hollow member having a pressure transmitting medium sealed therein, and a pressure detecting device for detecting the pressure of the pressure transmitting medium in the flexible hollow member Are used. Also with this configuration, it is possible to reliably detect the lifting of the epidermis.

In the above extravascular administration detecting device,
As another more preferred example, an optoelectronic device is used as the above-mentioned skin condition detection device. Thereby, from the change in the light amount between the projected light amount and the received light amount when the skin is lifted,
It is possible to reliably detect a change in the state of the epidermis due to the lifting of the epidermis.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The extravascular administration detecting device according to the present embodiment will be described below with reference to the drawings.

(Embodiment 1) First, referring to FIG.
The extravascular administration detection device 3A according to Embodiment 1 will be described.

A winged needle 2 is attached to a predetermined position of a patient's arm 10. Drug solutions such as glucose solution, physiological saline, and contrast medium are sequentially introduced into the winged needle 2 via the tube 1. In the vicinity of the winged needle 2, a pressure sensor 3
b is fixed using the bandage 3a. The pressure sensor 3b is provided with a cable 3c for outputting information obtained from the pressure sensor 3b to the notification device 4.

Extravascular administration detecting device 3A having the above configuration
In the case where the winged needle 2 is attached outside the blood vessel,
The liquid medicine introduced from the tip of the winged needle 2 accumulates under the skin of the patient 10 and gradually lifts the epidermis at the tip of the winged needle 2. When the epidermis is lifted, a predetermined pressure is applied to the pressure sensor 3b located between the epidermis and the bandage 3a so as to gradually increase.

Accordingly, as shown in FIG. 2, when the average value or the minimum value of the detection values of the pressure sensor 3b within a predetermined time gradually increases and exceeds the predetermined detection value, it is determined that there is an abnormality. be able to. The use of the average value or the minimum value of the detection values in this way eliminates, for example, a sudden change in the detection value in the short term due to movement of the patient,
This is for detecting only a long-term change of the epidermis due to lifting of the epidermis when the winged needle 2 is attached outside the blood vessel.

Therefore, when the extravascular administration detecting device 3A according to the present embodiment is used, it is possible to detect that the winged needle 2 is attached to the outside of the blood vessel regardless of the visual detection of the lifting of the epidermis. become.

(Second Embodiment) In the first embodiment, the pressure sensor 3b is fixed with the bandage 3a, but in the present embodiment, as shown in FIG. A band member 3d for mounting the pressure sensor 3b is used. This band 3d
, Fasteners 31 and 32 are attached so that they can be easily attached to and detached from the arm 10 of the patient. Except for providing the band member 3d, the extravascular administration detection device 3B in this embodiment has the same configuration as the extravascular administration detection device 3A in the first embodiment. The same operation and effect as in the first embodiment can be obtained.

(Embodiment 3) Next, an extravascular administration detecting apparatus 100 according to Embodiment 3 will be described with reference to FIG. According to the configuration of the extravascular administration detection device 100, the flexible hollow member 101a in which water, air, or other liquid is sealed as a pressure transmission medium, and the liquid inside the flexible hollow member 101a is supplied to the pressure sensor 103. And a tube 102 for guiding. Flexible hollow member 1
01a is attached to a band 101b.
Fasteners 31 and 32 are attached to 01b so that they can be easily attached to and detached from the arm and the like of the patient.

On the other hand, the pressure sensor 103 includes an alarm device 1
04 is connected, and further provided so that a stop signal 105 can be issued to a device for introducing a medical solution or the like to a patient.

As described above, in the extracorporeal administration detecting device 100 having the above-described configuration, the epidermis is lifted when the drug solution is introduced from the tip of the winged needle to the outside of the blood vessel.
The liquid sealed in the flexible hollow member 101a activates the pressure sensor 103 via the tube 102.

As shown in FIG. 2, the pressure sensor 103 determines that the pressure sensor 103 is abnormal when the detection value becomes equal to or more than a certain value with the lapse of time, as in the first embodiment. A predetermined signal is output to 104 and the alarm device 104 is sounded. This allows the patient, doctor or nurse to recognize that the pterygoid needle is attached outside the blood vessel. Further, the pressure sensor 103
Stop signal 105 for a device for introducing a chemical solution from
Is issued, the administration of the drug solution to the patient can be interrupted.

(Embodiment 4) Next, an extravascular administration detecting apparatus 200 according to Embodiment 4 will be described with reference to FIG. According to the configuration of the extravascular administration detection device 200, the device includes the photoelectric sensor 201 and the white tape 203 attached to the arm 10 of the patient. The reason why the white tape 203 is used is to equalize the value of the information obtained from the photoelectric device 201 because the skin color varies among individuals. Further, the photoelectric sensor 201 is provided with a cable 204 for outputting information obtained from the photoelectric sensor 201 to the notification device 202.

In the extravascular administration detecting apparatus 200, when a drug solution is introduced outside the blood vessel from the tip of the winged needle, the epidermis is lifted, and the epidermis is raised by the change in the amount of received light using the photoelectric sensor 201. It becomes possible to detect a change in state.

As shown in FIG. 2, when the average value or the minimum value of the detected values exceeds a certain value over time, as in the third embodiment, it is determined that the detected value is abnormal. A predetermined signal is output to the alarm device 202, and the alarm device 202 sounds. This allows the patient, doctor or nurse to recognize that the pterygoid needle is attached outside the blood vessel. Furthermore, by issuing a stop signal from the photoelectric device 201 to a device for introducing a drug solution, it is possible to interrupt the administration of the drug solution to the patient.

As described above, the embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an extravascular administration detection device according to a first embodiment.

FIG. 2 is a graph for judging whether a value detected by a pressure sensor is normal or abnormal.

FIG. 3 is a schematic configuration diagram of an extravascular administration detection device according to a second embodiment.

FIG. 4 is a schematic configuration diagram of an extravascular administration detection device according to a third embodiment.

FIG. 5 is a schematic configuration diagram of an extravascular administration detection device according to a fourth embodiment.

[Explanation of symbols]

 Reference Signs List 1 tube 2 winged needle 3A, 3B, 100, 200 extravascular administration detection device 3a bandage 3b pressure sensor 3c, 204 cable 4,202 notification device 31, 32 fastener 201 photoelectric sensor 203 white tape

Claims (4)

[Claims] 1. An extravascular administration detection device for detecting that a drug solution is administered outside a blood vessel when administering a drug solution into a blood vessel of a patient using a winged needle or the like, A skin state detection unit disposed near a needle or the like, and a signal notification unit for notifying a predetermined signal based on information obtained from the skin state detection unit,
Extravascular administration detector. 2. The pressure sensor according to claim 2, wherein the skin change detecting means includes: a pressure detecting means; a fixing means for fixing the pressure detecting means to a patient;
The extravascular administration detection device according to claim 1, comprising: 3. A flexible hollow member having a pressure transmitting medium sealed therein, and a pressure detecting means for detecting a change in pressure of the pressure transmitting medium in the flexible hollow member. The extravascular administration detection device according to claim 2, comprising: 4. The extravascular administration detection device according to claim 1, wherein the epidermis change detection means is a photoelectric device.