CN117159066B - Skin closer - Google Patents

Abstract

The invention provides a skin closer, which comprises a shell, a wire wheel, a rotating shaft, a transmission wheel, a motor, a torque sensor, a display and a control circuit board, wherein the controller is used for controlling the motor according to a control method, so that the wire coiling working condition, the wire uncoiling working condition and the tension maintaining working condition of a stay wire are realized, and the control method comprises the steps that if a tension detection value B is smaller than a tension target value A, the motor is controlled to positively rotate to tighten the stay wire, and the gradual closing of skin of a wound area is realized; if the tension target value A is equal to the tension detection value B, the motor is controlled to stop rotating, the transmission shaft and the transmission wheel are self-locked, the pulling force of the pull wire is kept, and continuous pulling force is provided for the skin of the wound area. According to the skin closer, accurate control of the pulling force of the pulling wire is achieved, and personalized pulling force values of the pulling wire can be output, so that the application range of the skin closer is wider.

Description

Skin closer

Technical Field

The present application relates to the field of medical devices, and in particular to a skin closure.

Background

In performing skin suturing, a wound is closed using a manual knob type skin suturing tension controller, US10076386B2 anchors a plurality of skin around the wound, a pull wire is hooked around the anchors and wound around a spool, a single pull wire is secured by a constant force spring providing a single pull force, and a constant closing tension is desired to be applied to the wound. The prior art has the following technical problems:

(1) The tension force applied to the wound by the tension wire is provided by a coil spring, but the thickness precision of the strip material of the coil spring is not easy to control in production, and the small error of the thickness of the coil spring can cause the torsion force of the coil spring to fluctuate in a large range, so that the tension force output by the skin suture tension controllers in different batches has larger deviation with the expected output tension force;

(2) The existing manual skin suture tension controller injection molding part has larger deviation of the tension value of the output pull wire due to injection molding deviation. For example, the injection molding precision of the knob structure is insufficient, so that the jump torque value of the coil spring can be changed greatly, and the output tension value is influenced;

(3) And in the continuous stress process of the stay wire, the stay wire is elastically deformed. The tensile force gradually decays with the elastic deformation, so that the output tensile force of the pull wire is smaller than the expected value.

(4) Each skin suture tension controller can only output a smaller than expected fixed tension value, and thus its application range is narrowed. For example, a skin tension value matching a skin with a particular condition cannot be output;

(5) When the skin suture tension controller is operated, a hand-held device is needed, and the knob is rotated by the other hand, so that the stay wire can be pulled to the skin by the action of extra force in the process of rotating the knob, the pain of a patient is additionally increased, and the experience of the patient is poor;

(6) The existing skin suture tension controller has no prompt function, so that medical staff cannot timely and accurately grasp the state of the skin suture tension controller in use.

Disclosure of Invention

The present application provides a skin closure.

Specifically, the application is realized by the following technical scheme:

the embodiment of the application provides a skin closer for make the wound and surrounding tissue gradually remove through the acting as go-between and reach the wound closure, skin closer includes:

a housing for accommodating and protecting the internal parts;

the wire wheel is used for winding the stay wire;

the rotating shaft is connected with the wire wheel and drives the wire wheel to rotate;

the driving wheel is connected with the rotating shaft and provides power for the rotating shaft;

the motor is connected with the transmission shaft and drives the transmission wheel to rotate so as to drive the wire wheel to rotate, thereby releasing or winding the stay wire on the wire wheel;

the torque sensor is arranged on the rotating shaft and used for detecting a torque value on the wire wheel;

a skin anchor disposed at the wound area, the pull wire being wound around the skin anchor;

the controller is used for controlling the motor according to a control method, so that the stay wire coiling working condition, the stay wire uncoiling working condition and the tension maintaining working condition are realized;

the control method comprises the following steps:

if the tension detection value B is smaller than the tension target value A, controlling the motor to rotate forwards to tighten the stay wire, so as to realize gradual closing of the skin of the wound area; if the tension target value A is equal to the tension detection value B, controlling the motor to stop rotating, and enabling the transmission shaft to be self-locked with the transmission wheel, so that the pulling force is kept, and continuous pulling force is provided for the skin of the wound area;

wherein the tension target value A of the skin of the wound area is automatically calculated or input and obtained according to the skin characteristics of the periphery of the wound area, and the tension detection value B is obtained according to the torque value.

In some embodiments, the device further comprises a display, which is arranged on the cover body on the surface of the shell, and is connected with the controller and used for displaying the tension detection value B and/or the tension target value A.

In some embodiments, the driving wheel is a worm wheel, the driving shaft is a worm, and the self-locking is realized through the driving engagement of the worm wheel and the worm.

In some embodiments, the housing comprises: the shell seat is provided with a baffle plate; the cover body covers the top of the shell seat and forms a first accommodating cavity with the partition plate; the base is covered at the bottom of the shell seat and forms a second accommodating cavity with the partition plate; the wire wheel is arranged in the first accommodating cavity, the motor and the driving wheel are arranged in the second accommodating cavity, and the rotating shaft penetrates through the partition plate.

In some embodiments, the controller further comprises a control circuit board, the control circuit board is semi-annular in shape, and the controller is arranged on the control circuit board.

In some embodiments, said automatically calculating or inputting said target value a for tension of skin at the wound area based on skin characteristics at the periphery of the wound area comprises: presetting a first skin characteristic factor K1, a second skin characteristic factor K2, a third skin characteristic factor K3 and a fourth skin characteristic factor K4; calculating and obtaining the tension target value A by a weighted average mode according to the first skin characteristic factor K1, the second skin characteristic factor K2, the third skin characteristic factor K3 and the fourth skin characteristic factor K4; wherein the first skin characteristic factor K1 is used for distinguishing skin tensions representing different ages, the second skin characteristic factor K2 is used for distinguishing skin tensions representing different sexes, the third skin characteristic factor K3 is used for distinguishing skin tensions representing different condition treatment situations, and the fourth skin characteristic factor K4 is used for distinguishing skin tensions representing different parts.

In some embodiments, the control method further comprises: and under the working condition of maintaining the tension, if the tension detection value B is attenuated rapidly within a time range, the controller performs tensioning abnormality alarm, so that the alarm of the pull wire breaking or pull wire loosening state is performed.

In some embodiments, the control method further comprises: and under the condition of maintaining tension, when the tension detection value B fluctuates beyond a threshold amplitude within a time range, the controller carries out interference alarm.

In some embodiments, the control method further comprises: under the condition of winding up, when the tension detection value B reaches the tension target value A and the pulling force value of the pulling wire is kept constant within a time range, the controller performs tensioning in-place prompt to indicate that the skin wound is closed.

In some embodiments, the control method further comprises: in the wire winding working condition, in an initial tensioning stage, the motor rotates at a first speed in an accelerating way; at a constant speed tensioning stage, when the tension detection value B reaches 50% of the tension target value A, the motor rotates at a second speed at a constant speed, and the second speed is smaller than the first speed; and/or under the winding-up condition, when the tension detection value B is smaller than 85% of the tension target value A, the motor rotates at a uniform speed to tighten the pull wire, and the third speed is smaller than the second speed; and under the paying-off working condition, the motor rotates at a fourth speed in an accelerating way to release the pull wire, and the fourth speed is greater than or equal to the first speed.

According to the embodiment of the application, the motor is used for driving the wire wheel to rotate, the torque born by the rotating shaft is detected through the torque sensor arranged on the rotating shaft, the detection value of the torque sensor is converted into the tension detection value B through the controller, and the tension detection value B is compared with the input tension target value A. When the tension detection value B is smaller than the input tension target value A, the motor is driven to rotate positively to tighten the stay wire, and when the tension target value A is equal to the tension detection value B, the motor stops rotating, the transmission shaft and the transmission wheel are self-locked, and the stay wire tension is maintained. And as the wound is closed, the pulling force of the pulling wire is reduced, when the tension detection value is reduced to 85% of the target value, the motor continues to rotate positively and continues to tighten the pulling wire until the tension target value A and the tension detection value B are equal again, the motor stops rotating, and the motor is cycled and reciprocated in this way, so that the gradual closing of the skin of the wound area is finally realized. After the wound is completely closed for several hours, the removal key on the cover is pressed, the motor is reversed, the wire wheel releases the pull wire, and the pull wire is detached from the skin anchor. The skin anchors and skin occluder are removed and suturing is performed. The skin closer disclosed by the embodiment of the invention has the following technical effects:

(1) The tension value of the stay wire is not required to be provided by using the coil spring, so that the condition that the tension values of the stay wires output by different batches of products are inconsistent due to manufacturing errors of the coil spring is avoided;

(2) The skin closer only has a simple transmission structure, so that the tightening and releasing of the stay wire are realized, and the structure is simple;

(3) Through the detection of the torque sensor, the motor is controlled to rotate through the operation of the control circuit board, and the accurate control of the pulling force of the pulling wire can be realized.

(4) The intelligent control of the control circuit board and the stepping motor can output the personalized pull force value of the pull wire, so that the application range of the skin closer is wider;

(5) The intelligent control mode is adopted, the display is simple and convenient to operate, and the experience of a patient is good;

(6) The device has the functions of tensioning in-place prompt, abnormality alarm and interference alarm. So that the medical staff can timely and accurately grasp the state of the skin closer in use.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

FIG. 1 is an overall schematic of a skin closure in an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a skin closure in an embodiment of the present disclosure;

FIG. 3 is a schematic view of a skin closure in an embodiment of the present disclosure;

fig. 4 is a flow chart of a control method in an embodiment of the present disclosure.

Reference numerals:

01: a pull wire;

10: a housing; 11: a housing base; 111: a partition plate; 12: a cover body; 13: a base;

20: a wire wheel;

30: a rotating shaft;

40: a driving wheel;

50: a motor; 51: a transmission shaft;

60: a torque sensor;

70: a control circuit board;

80: displaying a circuit board; 81: a display.

Detailed Description

The present disclosure will now be discussed with reference to several embodiments. It should be understood that these embodiments are discussed only in order to enable a person of ordinary skill in the art to better understand and thus practice the present disclosure, and are not meant to imply any limitation on the scope of the present disclosure.

As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms. The term "based on" is to be interpreted as "based at least in part on". The terms "embodiment" and "one embodiment" are to be interpreted as "at least one embodiment. The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "first," "second," and the like, may refer to different or the same object. Other explicit and implicit definitions are also possible below.

Some specific values or ranges of values may be referred to in the following description. It should be understood that these numerical values and numerical ranges are merely exemplary, which may be advantageous to put the concepts of the present disclosure into practice. However, the description of these examples is not intended to limit the scope of the present disclosure in any way. These values or ranges of values may be set otherwise, depending on the particular application and requirements.

The skin closer promotes the expansion of skin tissues through the dynamic driving force provided by the electric control device, further promotes the rapid movement of the wound and surrounding tissues, and realizes that the wound edges are pulled together by using dynamic constant tension, and then the wound is sutured. The characteristics of no need of extra donor, keeping the complete thickness of the skin, small scar after suturing and good beautifying effect are realized.

As described above, the skin closer of the prior art adopts the coil spring to provide the pulling force value of the pulling wire, and the pulling force values output by the closer of different batches are not constant due to the preparation error of the coil spring, so that the effect is poor in practical use; on the other hand, in the prior art, each closer can only output one pulling force value, and when a plurality of skin tension control closers are simultaneously used for a larger wound, if the output forces are inconsistent, the tissue expansion around the wound cannot reach the expected state at the same time, and the wound is easy to twist, so that the effect of the later suturing operation is affected; moreover, there are large differences in skin tension between different ages, sexes, body parts and skin conditions, and one tension value cannot meet the requirement of the difference.

Any reference to directions and orientations in the description of the embodiments herein is for convenience of description only, and should not be construed as limiting the scope of the present invention, for example, "top" is defined as a direction in which the display 81 is disposed and "bottom" is defined as a direction opposite to a direction in which the display 81 is disposed, for convenience of description only. The description of the preferred embodiments will refer to combinations of features, which may be present alone or in combination, and the invention is not particularly limited to the preferred embodiments. The scope of the invention is defined by the claims.

As shown in fig. 1 to 3, the skin closer according to the embodiment of the present disclosure generally includes a housing 10, a wire reel 20, a rotating shaft 30, a driving wheel 40, a motor 50, a torque sensor 60, a skin anchor (not shown), a controller, and a pull wire 01, wherein the housing 10 is used to carry and protect other components, the wire reel 20 is used to wind the pull wire 01, the rotating shaft 30 is connected with the wire reel 20 to drive the wire reel 20 to rotate, the driving wheel 40 is connected with the rotating shaft 30 to output power of the motor 50 and transmit the power to the rotating shaft 30 and the wire reel 20, the motor 50 transmits the rotation through a transmission shaft 51, and the torque sensor 60 is used to acquire a torque value on the rotating shaft 30 to calculate a tension detection value B through the controller, and the controller controls the rotation of the motor 50 and the skin closer to alarm.

In one embodiment, the housing 10 may be integrally formed or separately formed, and the housing 10 includes a housing seat 11, a cover 12 and a base 13, where the housing seat 11 is disposed between the cover 12 and the base 13, and the housing seat 11 is formed with a partition 111, and a first accommodating cavity and a second accommodating cavity are formed by the partition 111 and the cover 12 and the base 13, respectively, where the first accommodating cavity is used for mounting the reel 20 and the display circuit board 80, and the second accommodating cavity is used for mounting the motor 50, the driving wheel 40, the driving shaft 51, the torque sensor 60 and the control circuit board 70, and by separating the housing 10 into two independent accommodating cavities, on one hand, the mounting position between the inner parts of the housing 10 is simpler and more compact, and on the other hand, the display circuit board 80 and the control circuit board 70 are shielded by the partition 111 to avoid signal interference.

In one embodiment, the reel 20 is integrally connected with the rotating shaft 30, which may be integrally formed or detachably connected through a key slot or other structure, the reel 20 is disposed in the first accommodating cavity, and the rotating shaft 30 passes through the partition 111 to extend between the two accommodating cavities, so as to transmit the output rotation of the motor 50 in the second accommodating cavity to the reel 20 in the first accommodating cavity.

In one embodiment, the transmission shaft 51 of the motor 50 is integrally and rotatably connected with the transmission wheel 40, the transmission wheel 40 can be a gear, and the transmission shaft 51 of the motor 50 realizes rotation output through gear engagement transmission; the driving wheel 40 may be a worm wheel, and the driving shaft 51 may be a worm, so that the reverse rotation of the motor 50 caused by the pulling force of the pull wire 01 can be prevented, for example, the reverse rotation occurs in the power-off state of the motor 50, and the pulling force value is kept constant due to the self-locking characteristic of the worm and gear pair.

In one embodiment, the torque sensor 60 includes a sensor outer ring and a sensor shaft hole, the sensor outer ring is fixed on the housing 10 by adopting a screw thread or a fastening pin, the sensor shaft hole is abutted on the rotating shaft 30 by adopting a D-shaped shaft, and a strain gauge of the torque sensor 60 is attached to the sensor shaft hole and is used for detecting the deformation amount of the sensor main body when being stressed.

In one embodiment, the skin anchors are arranged at the wound area, and the number of the skin anchors can be any as long as the skin anchors can be uniformly distributed around the wound area, and the stay wire 01 is used for being wound on all the skin anchors, and the stay wire 01 is wound in a V-shaped, W-shaped or M-shaped mode, so that the tension value of the stay wire 01 acts on the skin around the wound through the skin anchors.

In one embodiment, the cover 12 is further provided with a display 81, and the first accommodating cavity is provided with a display circuit board 80, where the display 81 is used for displaying the working state, parameters, alarm prompts and other contents of the closer, so that an operator can intuitively understand the real-time tension condition of the wound area, and the display 81 can display the real-time tension detection value B, the tension target value a, the tension holding constant time, the tension tensioning time, the tension releasing time and the like of the pull wire 01. The display circuit board 80 is used for providing display 81 to display data, and connecting the display 81 with the torque sensor 60, the controller and the remote platform in a communication way, so that the data can be transmitted to the display 81 for display, and the data of the display 81 can be collected for subsequent research and optimization scheme use, so that a hospital related operation case database is established.

In one embodiment, a control circuit board 70 is further disposed in the second accommodating cavity, the control circuit board 70 is in a semi-annular shape, an annular central area is used for accommodating the driving wheel 40, and an annular missing part is used for accommodating the motor 50 and the transmission shaft 51, so that compact matching of components is achieved in a narrow space.

Since the embodiment of the present disclosure can monitor the torque value in real time through the torque sensor 60, that is, indirectly detect the tension value of the pull wire 01 in real time, thereby precisely controlling the rotation of the motor 50 to realize the rich working state of the skin closer, and exemplary, the embodiment of the present disclosure realizes the control process through the controller.

The skin closer of the embodiment of the disclosure is used for gradually moving a wound and surrounding tissues to close the wound through the stay wire 01, and the use operation of the skin closer in the whole treatment process is divided into three stages, namely a wire-collecting working condition, a wire-releasing working condition and a tension maintaining working condition of the stay wire. Wherein, a plurality of skin anchors are buried in the wound area, one end of the wire is wound on the skin anchors, the other end is wound on the wire reel 20, the wire reel 20 rotates towards different directions, the skin anchors are tensioned and released through the wire reel, the rotation direction of the wire reel 20 for tensioning the wire reel 01 is defined as positive rotation, and the rotation direction of the wire reel 20 for releasing the wire reel 01 is defined as reverse rotation, for convenience of description.

The wire-winding working condition means that the wire wheel 20 rotates forwards to tighten the wire 01, and the wound and surrounding tissues are pulled together through the skin anchor, so that the trend of wound closure is realized. Maintaining the tension condition means that when the skin anchor tightens the wound to a closed state, the closed state of the wound needs to be maintained for a period of time for the skin tissue of the wound to grow and self-heal. The paying-off working condition means that after skin tissue of a wound is self-healed to a certain extent, the stay wire 01 is turned over by the wire wheel 20, and then the skin anchor, the stay wire 01 and the skin closer are removed.

In one embodiment, the tension detection value B of the wire 01 is monitored in real time by the torque sensor 60, the tension detection value B is compared with the tension target value a, and the controller outputs a control signal to the motor 50 according to the comparison result. For example, in the winding-up condition, the tension detection value B is detected in real time, if the tension detection value B is smaller than the tension target value a, the motor 50 is controlled to continuously rotate forward to tighten the pull wire 01 until the tension detection value B is equal to the tension target value a, at this time, the tension of the pull wire 01 to the wound reaches a preset state, and the motor 50 stops rotating to keep the tension of the pull wire 01 to the wound stable in the preset state.

The target tension value a is specifically preset according to different conditions. According to practice, factors influencing skin tension values are manifold. The skin tension values of the human body are different according to the age and sex, the skin tension values of all parts of the human body are also different, different skin states can be displayed according to external wounds and other factors, and the tension values of different skin states are also greatly different. The skin closer disclosed in this embodiment may preset the specific tension target value a according to different situations, which is exemplary:

as shown in the above table, after a large number of data analysis and verification, the above characteristic factors are determined, and an appropriate skin tension base is selected, and the skin tension base may be fb=15n, for example, to obtain the skin tension target value F by a weighted average method:

（1）

in the expression (1), the skin state corresponding to each of the 4 factors may be obtained by measuring the skin tension value by a device such as a skin tightness tester, instead of the weighted average method, to obtain the numerical value, and the numerical value may be inputted to the control closer.

In one embodiment, the control method is used for judging the disconnection or disconnection condition of the pull wire 01, and under the condition of maintaining the tension, when the pull wire 01 is disconnected or disconnected, the tension detection value B detected by the torque sensor 60 is attenuated instantaneously, so that when the tension detection value B drops rapidly within a time range, the controller carries out disconnection or disconnection alarm prompt. For example, the time range T1 may be 1s, and when the tension detection value B falls more than 70% within 1s, it is determined that the thread is broken or the skin anchor is dropped, etc., to cause the thread to be loosened.

In one embodiment, the control method is used for warning and prompting external interference. For example, under the condition of maintaining tension, the motor 50 drives the wire wheel 20 to rotate, the torque applied to the rotating shaft 30 is detected by the torque sensor 60 arranged on the rotating shaft 30, the value detected by the torque sensor is converted into a tension detection value B through the controller, the tension detection value B fluctuates more than a certain frequency within a time range T3, for example, the fluctuation of more than 2 times/s frequency occurs within 30s, a patient or other objects are considered to touch the stay wire 01 or the skin anchor or the wound, and at the moment, the closer sends out an interference signal alarm to prompt the medical staff to process the alarm fault condition.

In one embodiment, the control method is used to alert the take-up in place motor 50 to stall. Illustratively, in the wire winding operation, the motor 50 drives the wire wheel 20 to rotate, the torque applied to the rotating shaft 20 is detected by the torque sensor 60 disposed on the rotating shaft 30, and the value detected by the torque sensor 60 is converted into a tension detection value B by the controller, and the tension detection value B is compared with the input tension target value a. When the tension detection value B is smaller than the input tension target value A, the driving motor rotates positively to tighten the stay wire, and when the tension target value A is equal to the tension detection value B, the motor stops rotating, the transmission shaft and the transmission wheel are self-locked, and the stay wire tension is maintained. As the wound closes, the pull-wire tension decreases, and when the tension detection value decreases to 85% of the tension target value, the motor continues to rotate forward, continuing to tighten the pull-wire until the tension target value a and the tension detection value B are again equal. The motor stops rotating and repeats in this way, until after T2 hours, which may be 1 hour, for example, the difference between the tension target value a and the tension detection value B is always less than 5% of the tension target value and no longer changes, and sends out a tightening in-place indication signal.

In one embodiment, the control method is used to control the speed of the application of tension during skin tightening and loosening, i.e. to control the motor speed. In the winding-up condition, the motor 50 is controlled to accelerate at the first speed V1 in the initial tensioning stage, and the wire wheel can be rotated at a faster speed when the pulling force between the pulling wire 01 and the skin anchor is not generated or is very small, so that the pulling wire 01 is wound on the wire wheel 20 rapidly, and the tensioning efficiency is improved.

And in the constant-speed tensioning stage, when the tension detection value B reaches 50% of the tension target value, the motor 50 is controlled to rotate at a second speed, and the second speed is smaller than the first speed. For example, when the target tension value 14N and the preset reference value 7N are set, the rotation speed of the motor 50 is controlled to be reduced to the second speed V2, and at this time, the tension of the pull wire 01 and the skin anchor generate a certain tension, so that the speed is reduced to avoid the situation that the pull wire is wound incorrectly in the winding process, and the like, and secondary damage is caused to the skin.

Under the condition of maintaining the tension, when the tension detection value B is equal to the tension value target value A and the skin wound is healed continuously, and when the tension detection value B is detected to be less than 85% of the tension target value A again, the motor 50 is controlled to rotate at a third speed V3 at a constant speed, and the third speed is less than the second speed V2 of V3, so that the acting force of the tension 01 of the pull wire on the skin wound is large, and the speed is too high, so that the skin anchor is easy to tear the skin. For example, the motor 50 is a stepping motor 50, and the stepping motor 50 receives a control signal to reduce the rotation speed.

Under the pay-off working condition, the pull wire 01 is taken down from the skin anchor in an exemplary winding process, and the motor is controlled to rotate at a fourth speed V4 in an accelerating manner, and the fourth speed is greater than or equal to the first speed, so that the winding efficiency is improved, a certain counter force is required to be given to the pull wire in the winding process, the pull wire can be smoothly retracted, and the knot in the shell can be avoided.

According to an embodiment of the present disclosure, the control work is performed by the following method:

s1, inputting a skin tension target value A of a wound area according to skin characteristics around the wound area; the target value of the tension a may be a weighted average calculated value combined with the skin tension characteristic factor, or may be an actual measured value of the skin tension measured by a tester.

S2, detecting a torque value applied to the closer through a torque sensor 60, and converting the torque value into a corresponding tension detection value B through a controller;

and S3, comparing the tension detection value B with the input tension target value A. When the tension detection value B is smaller than the inputted tension target value a, the driving motor 50 rotates forward to tighten the wire 01. Until the tension target value A is equal to the tension detection value B, the motor 50 stops rotating, the transmission shaft 30 and the transmission wheel 40 are self-locked, and the pulling force of the pulling wire is maintained. With the wound closed, the pulling force of the pulling wire is reduced, when the tension detection value is reduced to 85% of the tension target value, the motor 50 continues to rotate positively and continues to tighten the pulling wire 01 until the tension target value A and the tension detection value B are equal again, the motor stops rotating, and the motor repeats the cycle until after T2 hours, the difference between the tension target value A and the tension detection value B is always less than 5% of the tension target value and is not changed any more, a tensioning in-place alarm signal is sent, and the motor does not rotate any more.

S4, sending out a tensioning in-place alarm signal, and enabling the motor not to rotate any more. Clicking the removal button removes the skin closure, and finally performing the suturing operation.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (9)

1. A skin closure for gradually moving a wound and surrounding tissue to achieve wound closure by pulling a wire (01), the skin closure comprising:

a housing (10) for accommodating and protecting the internal parts;

a reel (20) for winding the pull wire (01);

the rotating shaft (30) is connected with the wire wheel (20) and drives the wire wheel (20) to rotate;

the driving wheel (40) is connected with the rotating shaft (30) and provides power for the rotating shaft (30);

the motor (50) is connected with the transmission shaft (51) and drives the transmission wheel (40) to rotate to drive the wire wheel (20) to rotate, so that the pull wire (01) is released or wound on the wire wheel (20);

a torque sensor (60) disposed on the rotating shaft (30) for detecting a torque value on the wire wheel (20);

a skin anchor arranged at the wound area, the pull wire (01) being wound around the skin anchor;

the controller is used for controlling the motor (50) according to a control method so as to realize the wire reeling working condition, the wire unreeling working condition and the tension maintaining working condition of the pull wire (01);

the control method comprises the following steps:

if the tension detection value B is smaller than the tension target value A, controlling the motor (50) to rotate forwards to tighten the pull wire (01) so as to realize gradual closing of the skin of the wound area; if the tension target value A is equal to the tension detection value B, the motor (50) is controlled to stop rotating, the transmission shaft (51) and the transmission wheel (40) are self-locked, the tension of the pull wire (01) is kept, and continuous tension is provided for the skin of the wound area;

wherein the tension target value A of the skin of the wound area is automatically calculated or input and obtained according to the skin characteristics of the periphery of the wound area, and the tension detection value B is obtained according to the torque value;

the control method further includes: under the condition of winding up, when the tension detection value B reaches the tension target value A and the tension value of the pull wire (01) is kept constant within a time range, the controller performs tensioning in-place prompt to indicate that the skin wound is closed.

2. Skin closure according to claim 1, further comprising a display (81) arranged on a cover of the surface of the housing (10), the display (81) being connected to the controller for displaying the tension detection value B and/or the tension target value a.

3. Skin closure according to claim 1, characterized in that the drive wheel (40) is a worm wheel, the drive shaft (51) is a worm, and the self-locking is achieved by a worm wheel and worm drive engagement.

4. Skin closure according to claim 1, wherein the housing (10) comprises:

a housing (11) provided with a partition (111);

the cover body (12) covers the top of the shell seat (11) and forms a first accommodating cavity with the partition plate (111);

the base (13) is covered at the bottom of the shell seat (11) and forms a second accommodating cavity with the partition board (111);

the wire wheel (20) is arranged in the first accommodating cavity, the motor (50) and the driving wheel (40) are arranged in the second accommodating cavity, and the rotating shaft (30) penetrates through the partition plate (111).

5. The skin closure of claim 4 further comprising a control circuit board (70), said control circuit board (70) being semi-annular in shape, said controller being disposed on said control circuit board (70).

6. The skin closure of claim 1, wherein said automatically calculating or inputting said target value a for tension of skin at said wound area based on skin characteristics at said wound area periphery comprises:

presetting a first skin characteristic factor K1, a second skin characteristic factor K2, a third skin characteristic factor K3 and a fourth skin characteristic factor K4;

calculating and obtaining the tension target value A by a weighted average mode according to the first skin characteristic factor K1, the second skin characteristic factor K2, the third skin characteristic factor K3 and the fourth skin characteristic factor K4;

wherein the first skin characteristic factor K1 is used for distinguishing skin tensions representing different ages, the second skin characteristic factor K2 is used for distinguishing skin tensions representing different sexes, the third skin characteristic factor K3 is used for distinguishing skin tensions representing different condition treatment situations, and the fourth skin characteristic factor K4 is used for distinguishing skin tensions representing different parts.

7. The skin closure of claim 1 wherein said control method further comprises: and under the working condition of maintaining the tension, if the tension detection value B is attenuated rapidly within a time range, the controller performs tensioning abnormality alarm, so that the alarm of the pull wire (01) in a broken or loose state is performed.

8. The skin closure of claim 1 wherein said control method further comprises: and under the condition of maintaining tension, when the tension detection value B fluctuates beyond a threshold amplitude within a time range, the controller carries out interference alarm.

9. The skin closure of claim 1 wherein said control method further comprises:

in the winding-up condition, the motor (50) is accelerated to rotate at a first speed during an initial tensioning phase; a constant-speed tensioning stage, wherein when the tension detection value B reaches 50% of the tension target value A, the motor (50) rotates at a constant speed at a second speed, and the second speed is smaller than the first speed;

and/or, in the winding-up condition, when the tension detection value B is less than 85% of the tension target value a, the motor (50) rotates at a uniform speed to tighten the pull wire (01), and the third speed is less than the second speed;

and under the paying-off working condition, the motor (50) accelerates and rotates at a fourth speed to release the pull wire (01), and the fourth speed is greater than or equal to the first speed.