Abdominal wall stitching instrument for human tissue recognition

Abstract

The utility model belongs to the field of abdominal wall stitching instruments, and relates to an abdominal wall stitching instrument capable of recognizing human tissues. The device assists a doctor in analyzing and identifying the needle body puncture position of the abdominal wall stitching instrument, and the operation difficulty of the doctor is reduced. The technical scheme comprises a handle, a needle body, a power supply, a signal acquisition circuit and an electrode plate. The needle body is fixedly connected with the handle, a plurality of end points are arranged on the outer wall of the needle body and are arranged at equal intervals in the extending direction of the needle body, each end point is insulated from the needle body, a plurality of conductive circuits are further arranged on the needle body, the other end of each conductive circuit is connected with one corresponding end point, and the power source is arranged in the handle. A divider resistor is arranged between each conducting circuit and the power supply, the divider resistors are electrically connected with the signal acquisition circuit, and the signal acquisition circuit is configured to acquire voltage values at the connection positions of the divider resistors and the conducting circuits and analyze the length of the needle body in the human body according to the acquired voltage values. The electrode plate is attached to the skin of the human abdominal wall and fixed and grounded.

Description

Technical Field

[0001] The utility model belongs to the field of abdominal wall suturing devices, and relates to an abdominal wall suturing device for identifying human tissues. Background Art

[0002] Abdominal wall staplers, also known as abdominal staplers, are used to close small incisions during surgery. The needle body of the abdominal wall stapler is made of titanium alloy and has a titanium alloy clip inside.

[0003] In laparoscopic minimally invasive surgery, the needle of the abdominal wall stapler passes through the introducer to puncture the subcutaneous tissue, fascia, peritoneum and other tissues of the human body, and then the clamp is extended out of the needle body. After the clamp takes in the suture thread, the needle of the abdominal wall stapler withdraws from the human tissue and pulls out the suture thread at the same time. The above actions are repeated many times to complete the full-thickness suture of the human abdominal wall.

[0004] In current technology, a laparoscope is generally used to monitor the operation process of the front end of the needle of the abdominal wall stapler in the abdominal cavity, so that the doctor can accurately capture the suture line.

[0005] However, the process of the needle of the abdominal wall suture device puncturing the subcutaneous tissue of the human body cannot be effectively monitored. In addition, there is a problem of proportion change when the front end of the needle enters the abdominal cavity and is photographed by the laparoscope. For beginners or less experienced doctors, it is very likely that the needle / clip will cause damage to the inner wall of the abdominal cavity due to inaccurate distance control. Utility Model Content

[0006] In order to overcome the defects in the above-mentioned related technologies, the utility model proposes an abdominal wall suture device for identifying human tissues, which can assist doctors in analyzing and identifying the needle puncture position of the abdominal wall suture device, thereby reducing the difficulty of doctors' operation.

[0007] Some embodiments of the utility model provide an abdominal wall suture device for human tissue identification. The abdominal wall suture device for human tissue identification includes: a handle, a needle body, a power supply, a signal acquisition circuit and an electrode sheet. Among them, the needle body is fixedly connected to the handle, and a plurality of endpoints are arranged on the outer wall of the needle body. The plurality of endpoints are arranged equidistantly along the extension direction of the needle body, and each endpoint is insulated from the needle body. A plurality of conductive circuits are also arranged on the needle body, and each conductive circuit is arranged along the extension direction of the needle body, and one end of the conductive circuit extends into the handle, and the other end of the conductive circuit is connected to a corresponding endpoint, and the conductive circuit also includes an insulating layer arranged on the outside. The power supply is arranged in the handle, and the plurality of conductive circuits are electrically connected. A voltage divider resistor is arranged between each conductive circuit and the power supply, and the connection position of the voltage divider resistor and the corresponding conductive circuit is also electrically connected to the signal acquisition circuit, and the signal acquisition circuit is configured to collect the voltage value at the connection position of the voltage divider resistor and the corresponding conductive circuit, and analyze the length of the needle body in the human body according to the collected voltage value. At least one electrode sheet is fixed to the epidermis of the abdominal wall of the human body, and the electrode sheet is also grounded.

[0008] Preferably, the signal acquisition circuit comprises: a microprocessor and an acquisition subcircuit. The acquisition subcircuit comprises: a signal acquisition terminal, a first power supply terminal, a second power supply terminal and a signal output terminal, the signal acquisition terminal is electrically connected to the connection position of the voltage divider resistor and the corresponding conductive circuit, the signal output terminal is electrically connected to the I / O pin of the microprocessor, and the acquisition subcircuit is configured such that: when the signal acquisition terminal receives a low-level signal, the signal output terminal uploads a low-level signal to the microprocessor, and when the signal acquisition terminal receives a high-level signal, the signal output terminal uploads a high-level signal to the microprocessor.

[0009] Preferably, the power supply further includes: a first stabilized power supply terminal and a second stabilized power supply terminal. The output of the first stabilized power supply terminal is DC5V, the output of the second stabilized power supply terminal is DC3.3V, the end of the voltage divider resistor away from the conductive line is electrically connected to the first stabilized power supply terminal, the first power supply terminal is electrically connected to the first stabilized power supply terminal, and the second power supply terminal is electrically connected to the second stabilized power supply terminal.

[0010] Preferably, the needle body is a tube, and a plurality of grooves are arranged on the outer wall of the needle body in its extension direction. The plurality of grooves are arranged circumferentially along the outer wall of the needle body, and the orthographic projections of the grooves on a plane perpendicular to the extension direction of the needle body are separated from each other. Each groove is a strip groove, and the arrangement direction of the grooves is consistent with the arrangement direction of the needle body. Endpoints are arranged in the grooves, and the end points are smoothly connected to the outer wall of the needle body. The length of each groove is the same, and the spacing between two adjacent grooves is consistent. The groove extends to the front end of the needle body. An insulating layer is provided on the inner wall of the groove, and the end points are insulated from the needle body by the insulating layer.

[0011] Preferably, the resistance of the voltage-dividing resistor is 5-20 MΩ.

[0012] Preferably, the acquisition subcircuit further includes: a field effect tube, a first resistor and a second resistor. The gate of the field effect tube is electrically connected to the second power supply terminal, the source of the field effect tube is electrically connected to the signal acquisition terminal and the second power supply terminal, and the drain of the field effect tube is electrically connected to the signal output terminal and the first power supply terminal. A first resistor is also provided between the second power supply terminal and the source of the field effect tube. A second resistor is also provided between the first power supply terminal and the drain of the field effect tube.

[0013] Preferably, an adsorption layer is further provided on the inner wall of the groove, the adsorption layer is provided between the endpoint and the insulating layer, and the adsorption layer is configured to absorb body fluid on the surface of the needle body near the endpoint.

[0014] The beneficial effects of the utility model are:

[0015] The human abdominal wall from outside to inside consists of the epidermis, dermis, fat layer, superficial fascia, muscle, transverse abdominal fascia, peritoneum, superior fascia and peritoneal wall. When doctors use an abdominal wall stapler, it can assist doctors in knowing the needle puncture position and avoid the needle entering the abdominal cavity for too long, which can reduce the difficulty of surgical operation and improve the success rate.

[0016] 2. The utility model forms a closed loop based on the contact between the endpoint and the human tissue, that is, the endpoint in contact with the human tissue is at a high level, and the endpoint not in contact with the human tissue is at a low level, and then analyzes the puncture length of the needle body in the human body based on the voltage of the endpoint. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a structural diagram of the handle and needle body of the utility model;

[0020] Figure 3 For the utility model Figure 2 A magnified view of middle;

[0021] Figure 4 This is the circuit diagram of the utility model;

[0022] Figure 5 Collect sub-circuit diagrams for this utility model;

[0023] Figure 6 It is a cross-sectional view of the end point of the utility model. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0027] like Figures 1 to 6As shown, some embodiments provide an abdominal wall suture device for human tissue identification. The abdominal wall suture device for human tissue identification includes: a handle 1, a needle body 2, a power supply, a signal acquisition circuit 3 and an electrode sheet 4. Among them, the needle body 2 is fixedly connected to the handle 1, and a plurality of endpoints 21 are arranged on the outer wall of the needle body 2. The plurality of endpoints 21 are arranged equidistantly along the extension direction of the needle body 2, and each endpoint 21 is insulated from the needle body 2. A plurality of conductive circuits 22 are also arranged on the needle body 2, and each conductive circuit 22 is arranged along the extension direction of the needle body 2. One end of the conductive circuit 22 extends into the handle 1, and the other end of the conductive circuit 22 is connected to a corresponding endpoint 21. The conductive circuit 22 also includes an insulating layer arranged on the outside. The power supply is arranged in the handle 1, and the plurality of conductive circuits 22 are electrically connected. A voltage-dividing resistor RU is provided between each conductive circuit 22 and the power supply, and the connection position between the voltage-dividing resistor RU and the corresponding conductive circuit 22 is also electrically connected to the signal acquisition circuit 3, and the signal acquisition circuit 3 is configured to collect the voltage value at the connection position between the voltage-dividing resistor RU and the corresponding conductive circuit 22, and analyze the length of the needle body 2 in the human body according to the collected voltage value. At least one electrode sheet 4 is fixed to the epidermis of the abdominal wall of the human body, and the electrode sheet 4 is also grounded.

[0028] Preferably, the signal acquisition circuit 3 comprises: a microprocessor 31 and an acquisition subcircuit. The acquisition subcircuit comprises: a signal acquisition terminal S1, a first power supply terminal V1, a second power supply terminal V2 and a signal output terminal S2, the signal acquisition terminal S1 is electrically connected to the connection position of the voltage-dividing resistor RU and the corresponding conductive line 22, the signal output terminal S2 is electrically connected to the I / O pin of the microprocessor 31, and the acquisition subcircuit is configured as follows: when the signal acquisition terminal S1 receives a low-level signal, the signal output terminal S2 uploads a low-level signal to the microprocessor 31, and when the signal acquisition terminal S1 receives a high-level signal, the signal output terminal S2 uploads a high-level signal to the microprocessor 31.

[0029] Preferably, the power supply further includes: a first stabilized power supply terminal V1 and a second stabilized power supply terminal V2. The output of the first stabilized power supply terminal V1 is DC5V, the output of the second stabilized power supply terminal V2 is DC3.3V, the end of the voltage divider resistor RU away from the conductive line 22 is electrically connected to the first stabilized power supply terminal V1, the first power supply terminal V1 is electrically connected to the first stabilized power supply terminal V1, and the second power supply terminal V2 is electrically connected to the second stabilized power supply terminal V2.

[0030] Preferably, the needle body 2 is a tube, and a plurality of grooves are arranged on the outer wall of the needle body 2 in its extension direction. The plurality of grooves are arranged circumferentially along the outer wall of the needle body 2, and the orthographic projections of the grooves on a plane perpendicular to the extension direction of the needle body 2 are separated from each other. Each groove is a strip groove, and the arrangement direction of the grooves is consistent with the arrangement direction of the needle body 2. An end point 21 is arranged in the groove, and the end point 21 is smoothly connected to the outer wall of the needle body 2. The length of each groove is the same, and the spacing between two adjacent grooves is consistent. The groove extends to the front end of the needle body 2. An insulating layer 211 is arranged on the inner wall of the groove, and the end point 21 and the needle body 2 are insulated by the insulating layer 211.

[0031] Preferably, the resistance of the voltage-dividing resistor RU is 5-20 MΩ.

[0032] Preferably, the acquisition subcircuit further includes: a field effect transistor MOS, a first resistor R1 and a second resistor R2. The gate of the field effect transistor MOS is electrically connected to the second power supply terminal V2, the source of the field effect transistor MOS is electrically connected to the signal acquisition terminal S1 and the second power supply terminal V2, and the drain of the field effect transistor MOS is electrically connected to the signal output terminal S2 and the first power supply terminal V1. A first resistor R1 is also provided between the second power supply terminal V2 and the source of the field effect transistor MOS. A second resistor R2 is also provided between the first power supply terminal V1 and the drain of the field effect transistor MOS.

[0033] Preferably, an adsorption layer H is further provided on the inner wall of the groove, and the adsorption layer H is provided between the end point 21 and the insulating layer 211, and the adsorption layer H is configured to absorb body fluid on the surface of the needle body 2 near the end point 21. The adsorption layer H can be the gap between the end point 21 and the insulating layer 211, and the gap width can be 0.1-0.2 mm. The insulating layer 211 can be an insulating coating baked on the groove.

[0034] The utility model further comprises a display unit, which is electrically connected to the microprocessor 31 , and the display unit may be a micro screen arranged on the handle 1 .

[0035] The resistor of the present application can be a chip resistor, which can be integrated with a field effect transistor MOS, a voltage stabilizing circuit, etc. on a circuit board.

[0036] The power source also includes a battery, which may be a button cell, for example.

[0037] The specific implementation of the utility model is as follows:

[0038] When the utility model is used, the electrode sheet 4 needs to be attached to the epidermis of the abdominal wall of the human body. It can be understood that the electrode sheet 4 is close to the puncture site. For example, the electrode sheet 4 can be 3 to 5 cm away from the puncture site. A resistor can also be set between the electrode sheet 4 and the grounding end, and the resistance value can be 10MΩ.

[0039] The resistance of the human body is 1~2KΩ. When the needle body 2 punctures the abdominal wall tissue of the human body, the multiple endpoints 21 on the needle body 2 contact the human tissue in turn, so that the endpoint 21 in contact with the human tissue forms a closed loop after passing through the electrode sheet 4. At this time, the endpoint 21 in the closed loop is at a high level. The signal acquisition circuit 3 collects the level signal, and it can be known that the needle body 2 punctures the endpoint 21 in the human tissue and analyzes the length of the needle body 2 puncturing into the human body.

[0040] In addition, after the front end of the needle body 2 enters the abdominal cavity, the front end of the needle body 2 is separated from the human tissue, and at the same time, the adsorption layer H can adsorb the body fluid at the front end of the needle body 2, so that the circuit between the end point 21 at the front end of the needle body 2 and the human tissue is disconnected, so that the end point 21 at the front end of the needle body 2 is at a low level, and at this time, the length of the front end of the needle body 2 entering the abdominal cavity can be analyzed based on the end point 21 at the front end of the needle body 2 at a low level. In this way, doctors can be assisted in performing surgery and provide effective guidance for doctors.

[0041] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0042] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An abdominal wall stapler for human tissue recognition, characterized in that: include: handle; A needle body is fixedly connected to the handle, a plurality of endpoints are arranged on the outer wall of the needle body, the plurality of endpoints are arranged equidistantly along the extension direction of the needle body, each endpoint is insulated from the needle body, a plurality of conductive circuits are also arranged on the needle body, each conductive circuit is arranged along the extension direction of the needle body, one end of the conductive circuit extends into the handle, the other end of the conductive circuit is connected to a corresponding endpoint, and the conductive circuit also includes an insulating layer arranged on the outside; a power source disposed in the handle and electrically connected to the plurality of conductive circuits; A signal acquisition circuit, wherein a voltage-dividing resistor is provided between each conductive circuit and the power supply, and the connection position between the voltage-dividing resistor and the corresponding conductive circuit is also electrically connected to the signal acquisition circuit, and the signal acquisition circuit is configured to collect the voltage value at the connection position between the voltage-dividing resistor and the corresponding conductive circuit, and analyze the length of the needle body in the human body according to the collected voltage value; The electrode sheet, at least one electrode sheet is fixed to the epidermis of the abdominal wall of the human body, and the electrode sheet is also grounded.

2. The abdominal wall stapler for human tissue recognition according to claim 1, characterized in that: The signal acquisition circuit comprises: microprocessor; The acquisition subcircuit comprises: a signal acquisition terminal, a first power supply terminal, a second power supply terminal and a signal output terminal, wherein the signal acquisition terminal is electrically connected to the connection position of the voltage-dividing resistor and the corresponding conductive circuit, and the signal output terminal is electrically connected to the I / O pin of the microprocessor. The acquisition subcircuit is configured as follows: when the signal acquisition terminal receives a low-level signal, the signal output terminal uploads the low-level signal to the microprocessor, and when the signal acquisition terminal receives a high-level signal, the signal output terminal uploads the high-level signal to the microprocessor.

3. The abdominal wall stapler for human tissue recognition according to claim 2, characterized in that: The power supply further comprises: a first stabilized power supply terminal and a second stabilized power supply terminal; The output of the first regulated power supply terminal is DC5V, the output of the second regulated power supply terminal is DC3.3V, the end of the voltage divider resistor away from the conductive circuit is electrically connected to the first regulated power supply terminal, the first power supply terminal is electrically connected to the first regulated power supply terminal, and the second power supply terminal is electrically connected to the second regulated power supply terminal.

4. The abdominal wall stapler for human tissue recognition according to claim 3, characterized in that: The needle body is a tube, and a plurality of grooves are arranged on the outer wall of the needle body in its extension direction. The plurality of grooves are arranged circumferentially along the outer wall of the needle body, and the orthographic projections of the grooves on a plane perpendicular to the extension direction of the needle body are separated from each other; Each groove is a strip-shaped groove, and the arrangement direction of the groove is consistent with the arrangement direction of the needle body. An end point is arranged in the groove, and the end point is smoothly connected to the outer wall of the needle body; The length of each groove is the same, and the distance between two adjacent grooves is consistent, and the groove extends to the front end of the needle body; An insulating layer is arranged on the inner wall of the groove, and the end point and the needle body are insulated by the insulating layer.

5. The abdominal wall stapler for human tissue recognition according to claim 4, characterized in that: The resistance of the voltage divider resistor is 5-20MΩ.

6. The abdominal wall stapler for human tissue recognition according to claim 5, characterized in that: The acquisition subcircuit also includes: A field effect tube, wherein the gate of the field effect tube is electrically connected to the second power supply terminal, the source of the field effect tube is electrically connected to the signal acquisition terminal and the second power supply terminal, and the drain of the field effect tube is electrically connected to the signal output terminal and the first power supply terminal; A first resistor, wherein a first resistor is further arranged between the second power supply terminal and the source of the field effect tube; A second resistor is provided between the first power supply terminal and the drain of the field effect tube.

7. The abdominal wall stapler for human tissue recognition according to claim 6, characterized in that: An adsorption layer is also arranged on the inner wall of the groove, and the adsorption layer is arranged between the end point and the insulating layer. The adsorption layer is configured to absorb body fluid on the surface of the needle body near the end point.

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