An abdominal wall suturing device and method

Abstract

This invention relates to the field of medical device technology and discloses an abdominal wall suture device and method, comprising a pin, a trocar body, and a locator. The pin has an external through hole, and the locator includes an insert cannula that can be inserted into the pin and a tube seat at the head end of the insert cannula. The insert cannula has an internal through hole, and a positioning block is provided at the tail end of the insert cannula. This invention, by setting up a locator and utilizing a positioning block that conforms to the abdominal wall, positions the pin, ensuring that the trocar body accurately penetrates the fascia on both sides of the bottom of the channel when inserted obliquely along the pin, improving suturing efficiency and reducing errors. The clamping block on the positioning block holds the suture and flips it to the symmetrical other side of the channel, allowing the trocar body to quickly and efficiently clamp and pull out the suture after a second insertion. This allows for rapid and successful suturing without laparoscopy, significantly reducing operational difficulty and making it better suited for suturing the last channel in laparoscopic surgery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an abdominal wall suture device and an abdominal wall suturing method. Background Technology

[0002] Laparoscopic surgery is a core technique in minimally invasive surgery. It involves creating a pneumoperitoneum by inflating the abdominal cavity with carbon dioxide, making tiny puncture holes in the abdominal wall, inserting a laparoscope and instruments to complete the surgery, replacing the traditional large open incision. It is currently the mainstream surgical procedure. In practice, multiple puncture holes are often made in the abdomen. At the end of the surgery, an abdominal wall suture device is used to first suture the abdominal wall fascia inside the puncture holes, and finally suture the skin on the surface of the puncture holes.

[0003] Chinese patent CN223220467U discloses an abdominal wall suture device, including a puncture device. The puncture device includes a puncture sheath, and two opposing handles are fixed to the surface of the puncture sheath. Each of the two handles has a positioning hole, and the suture device is inserted into one of the positioning holes. The method of using this abdominal wall suture device is relatively common. First, a pin is inserted into the channel in the abdomen. Then, the puncture device body, which holds the suture, is inserted along the oblique guide hole on the pin. This allows the puncture device body to penetrate the fascia from the side wall of the channel and extend into the abdominal cavity. The suture end is loosened by the puncture device body and then the puncture device body is pulled out. Then, the puncture device body is inserted into the abdominal cavity from a symmetrical part of the side wall of the channel. The suture end is then clamped and pulled out. Finally, the pin is removed and the suture is knotted. This method of operation has certain drawbacks: First, the insertion path of the trocar depends on the position of the pin. If the pin is too deep or too shallow, the trocar cannot penetrate the fascia layer at the bottom of the channel, affecting the suturing effect of the fascia layer. The pin in the current technology lacks the corresponding positioning effect. Second, the step of inserting the trocar into the abdominal cavity a second time and holding the suture depends on the real-time monitoring of the laparoscopy. However, for the final suturing of the channel where the laparoscopy is located, the laparoscopy in the pin needs to be removed first. Therefore, the trocar needs to be operated blindly when holding the suture, which is difficult and even worse than the doctor's pure manual suturing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an abdominal wall suture device and an abdominal wall suture method, which have the advantages of accurate suture and simple operation. It solves the problems of lack of pin positioning and the need for blind operation when suturing the final channel in existing abdominal wall suture devices.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an abdominal wall suture device, comprising a pin tube, a trocar body, and a locator. The pin tube has an external through hole. The locator includes a cannula that can be inserted into the pin tube and a tube seat disposed at the head end of the cannula. The cannula has an internal through hole. A positioning block is disposed outside the tail end of the cannula. An external driving component is disposed inside the tail end of the cannula. The external driving component is used to drive the positioning block to swing. A notch is opened on the positioning block. Clamping blocks are installed on the inner walls on both sides of the notch. An internal driving component is also installed in the positioning block. The internal driving component is used to drive the two clamping blocks to merge and move. When the cannula is inserted into the pin tube, the external drive unit rotates, forcing the positioning block to swing to a horizontal position. When the horizontal positioning block is in contact with the inner wall of the abdominal cavity, it positions the pin tube. After the trocar body is initially inserted into the suture, the inner and outer drive components work together to force the clamping blocks to merge and hold the suture before flipping to the other side of the pin tube. This allows the trocar body to accurately hold the suture in the notch when it is inserted into the abdominal cavity a second time.

[0006] Preferably, the pin tube includes a puncture tube for insertion into an abdominal orifice and a sealing chamber disposed at the top of the puncture tube, with an external through hole disposed on the puncture tube, and an oblique guide hole disposed on the side of the sealing chamber.

[0007] Preferably, the external drive component includes a motor and a rotating shaft. The motor is fixed in the insertion tube and the output shaft is fixed with a driving bevel gear. The rotating shaft is rotatably connected to the tail end of the insertion tube. A driven bevel gear is fixed on the rotating shaft. The driven bevel gear meshes with the driving bevel gear. One end of the positioning block is fixedly connected to the rotating shaft.

[0008] Preferably, the positioning block has an internal cavity, and the inner side walls of the recess are provided with sliding grooves. The sliding grooves, the recess, and the cavity are connected. The inner driving component is an electromagnet and is fixed in the cavity. The two clamping blocks are respectively installed in the two sliding grooves. The clamping block includes a shell that is slidably connected to the sliding groove. A permanent magnet is fixed on the side of the shell near the inner driving component. A straight strip hole is opened on the top of the shell. A guide groove is provided on the inner wall of the sliding groove. A movable block is movably inserted into the inner wall of the shell. A pin is fixed on the movable block. The pin passes through the straight strip hole and extends into the guide groove.

[0009] Preferably, the guide groove includes an inclined groove portion and a straight groove portion connected at their ends, with the inclined groove portion disposed at one end of the straight groove portion near the cavity.

[0010] Preferably, the top of the sealing chamber has two symmetrically distributed positioning holes, and the tube seat has a protrusion that matches the positioning holes.

[0011] Preferably, a suture tube is provided inside the puncture device body, a movable handle is provided at the top of the puncture device body, a cover is engaged on the movable handle, a take-up reel is movably installed inside the cover, a suture is fixed and wound on the take-up reel, and the suture passes through the inner cavity of the suture tube and extends to the bottom of the puncture device body.

[0012] Preferably, a silicone membrane sleeve is fixedly fitted onto the outer wall of the puncture tube, and the silicone membrane sleeve is matched with the position of the external through hole and completely covers the external through hole.

[0013] Preferably, the notch is located at the end of the positioning block away from the rotating shaft, with one end of the notch facing the cavity and configured as a V-shape.

[0014] This invention also discloses an abdominal wall suturing method, which uses the aforementioned abdominal wall suture device. The steps include: S1, first inserting the locator into the pin tube, activating the locator to position the pin tube, and adjusting the initial position of the pin tube according to the positioning; S2, inserting the trocar body to puncture one side of the fascia and inserting the suture into the abdominal cavity; S3, activating the locator again to clamp the suture in the abdominal cavity and pull it to the other side of the pin tube; S4, inserting the trocar body a second time to puncture the other side of the fascia and clamp the suture on the locator, and then pulling the suture out of the body; S5, removing the locator and tightening the suture.

[0015] Compared with the prior art, the present invention provides an abdominal wall suture device and an abdominal wall suturing method, which have the following beneficial effects: 1. This type of abdominal wall suture device and abdominal wall suturing method, by setting a locator, uses a locating block that can conform to the abdominal wall to locate the pin tube, ensuring that when the trocar body is inserted obliquely along the pin tube, it accurately penetrates the fascia on both sides of the bottom of the channel, improving suturing efficiency and reducing misoperation. By clamping the suture with the clamping block on the locating block and flipping it to the other side of the channel symmetrically, the trocar body can quickly and efficiently clamp the suture and pull it out after a second insertion. It can be done quickly and successfully without laparoscopy, greatly reducing the difficulty of operation and making it more suitable for suturing the last channel in laparoscopic surgery.

[0016] 2. This type of abdominal wall suture device and abdominal wall suturing method, by setting positioning holes and protrusions, allows the protrusion on the tube seat to be inserted precisely into the positioning hole at the top of the sealing chamber when the locator is installed, thus positioning the locator and preventing it from moving randomly during use, thereby improving accuracy.

[0017] 3. This type of abdominal wall suture device and abdominal wall suturing method, by setting a suture take-up wheel, allows the trocar body to use sutures continuously, saving suture changing time and improving surgical efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the abdominal wall suture device of the present invention; Figure 2 This is a cross-sectional view of the abdominal wall suture device of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of part A; Figure 4 This is a schematic diagram of the operation of the abdominal wall suture device of the present invention; Figure 5 This is a schematic diagram of the main body of the puncture device of the present invention; Figure 6 The structural explosion of the positioning block of the present invention Figure 1 ; Figure 7 For the present invention Figure 6 Enlarged view of part B; Figure 8 The structural explosion of the positioning block of the present invention Figure 2 ; Figure 9 For the present invention Figure 8 Enlarged view of part C.

[0019] In the diagram: 1. Pin tube; 2. Puncture device body; 21. Tube; 22. Movable handle; 23. Shell cover; 24. Take-up reel; 3. Positioner; 31. Insertion tube; 32. Tube seat; 33. Inner through hole; 34. Positioning block; 35. Notch; 36. Cavity; 37. Slide groove; 38. Guide groove; 4. External drive component; 41. Motor; 42. Rotating shaft; 43. Driving bevel gear; 44. Driven bevel gear; 5. Clamping block; 51. Shell; 52. Permanent magnet; 53. Straight strip hole; 54. Movable block; 55. Pin shaft; 6. Inner drive component; 7. Positioning hole; 8. Protrusion; 9. Silicone membrane sleeve; 10. Outer through hole; 11. Puncture tube; 12. Sealing chamber; 13. Angled guide hole. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes an abdominal wall suture device and an abdominal wall suturing method.

[0022] Example 1: Please refer to Figures 1-5An abdominal wall suturing device includes a pin tube 1, a trocar body 2, and a locator 3. The pin tube 1 is provided with an external through hole 10. The locator 3 includes an insertion tube 31 that can be inserted into the pin tube 1 and a tube seat 32 provided at the head end of the insertion tube 31. The insertion tube 31 is provided with an internal through hole 33. A positioning block 34 is provided outside the tail end of the insertion tube 31. An external driving member 4 is provided inside the tail end of the insertion tube 31. The external driving member 4 is used to drive the positioning block 34 to swing. A notch 35 is opened on the positioning block 34. Clamping blocks 5 are installed on both sides of the inner wall of the notch 35. An internal driving member 6 is also installed in the positioning block 34. The internal driving member 6 is used to drive the two clamping blocks 5 to merge and move. When the cannula 31 is inserted into the pin tube 1, the external drive 4 operates, forcing the positioning block 34 to swing to the horizontal. When the horizontal positioning block 34 is in contact with the inner wall of the abdominal cavity, it positions the pin tube 1. After the puncture device body 2 is initially inserted into the suture, the inner drive 6 and the outer drive 4 work together to force the clamping block 5 to merge and hold the suture and then flip to the other side of the pin tube 1. Thus, when the puncture device body 2 is inserted into the abdominal cavity for the second time, it can accurately hold the suture in the notch 35.

[0023] The diameter of the tube seat 32 is larger than the diameter of the insertion tube 31. Taking the vertical insertion of the pin tube 1 into the abdominal cavity of a lying patient as an example, in the initial state, the positioning block 34 extends along the axial direction of the insertion tube 31, that is, it is in a vertical state. At this time, the diameter of the positioning block 34 is smaller than the inner diameter of the insertion tube 31 so that it can pass smoothly through the pin tube 1. When installing the positioner 3 later, hold the tube seat 32 and insert the insertion tube 31 into the pin tube 1 through the positioning block 34 until the tube seat 32 fits against the top of the pin tube 1, so as to ensure that the insertion depth of the insertion tube 31 is consistent. The tube seat 32 is also provided with buttons for controlling the external drive component 4 and the internal drive component 6. In use, after the locator 3 is inserted, the positioning block 34 extends into the abdominal cavity. The external drive 4 is activated, causing the positioning block 34 to swing and adjust its angle until it reaches a horizontal position. Then, the pin tube 1 is held and its vertical height is adjusted until the horizontal positioning block 34 fits against the abdominal wall, thus achieving positioning. Next, the trocar body 2 containing the suture is inserted obliquely along the pin tube 1. The trocar body 2 penetrates the abdominal wall from the side wall of the abdominal opening and extends just into the notch 35. The trocar body 2 is manipulated to allow the suture to emerge from its end and fall into the notch 35. The trocar body 2 is then removed, and the internal drive 6 is activated. When the internal drive 6 operates, it drives the two clamping blocks 5 to merge, clamping the suture and forcing the clamping blocks 5 to move along the notch 35. To the distal end of the notch 35, the external drive 4 is then activated. The external drive 4 drives the positioning block 34 to rotate 180 degrees and then fit against the symmetrical abdominal wall on the other side of the pin tube 1. When the positioning block 34 rotates, it also pulls the suture. At this time, the suture is tilted and located in the center of the notch 35. Then, the puncture body 2 is inserted obliquely again from the symmetrical part of the pin tube 1. After penetrating the abdominal wall, it just extends into the notch 35. The puncture body 2 is operated to clamp the suture. Then the puncture body 2 is pulled out. The pulling force is greater than the clamping force between the clamp 5 and the suture. Therefore, the suture is released from the clamp 5. As the puncture body 2 is pulled to the outside of the human body, the external drive 4 and the internal drive 6 are finally activated to control the clamp 5 and the positioning block 34 to reset. The positioning device 3 and the pin tube 1 are pulled out of the abdominal orifice. Finally, the suture is tied tightly. By setting the locator 3 and using the positioning block 34 that can conform to the abdominal wall to position the pin tube 1, it is ensured that when the trocar body 2 is inserted obliquely along the pin tube 1, it accurately penetrates the fascia on both sides of the bottom end of the channel, which improves suturing efficiency and reduces misoperation. The clamping block 5 on the positioning block 34 clamps the suture and flips it to the other side of the channel symmetrically, so that after the trocar body 2 is inserted for the second time, it can quickly and efficiently clamp the suture and pull it out. It can be done quickly and successfully without laparoscopy, which greatly reduces the difficulty of operation and is better suited for suturing the last channel in laparoscopic surgery.

[0024] Example 2: See Figures 1-8 Unlike the above embodiments, the pin tube 1 includes a puncture tube 11 for insertion into an abdominal orifice and a sealing chamber 12 disposed at the top of the puncture tube 11. An external through hole 10 is disposed on the puncture tube 11, and an oblique guide hole 13 is disposed on the side of the sealing chamber 12.

[0025] The puncture tube 11 is used to penetrate the abdominal passage. When the insertion tube 31 is inserted into the puncture tube 11, the outer through hole 10 and the inner through hole 33 are in corresponding positions. The oblique guide hole 13 is set in two sets and symmetrically distributed. In specific operation, the puncture instrument body 2 first inserts into the oblique guide hole 13, and then penetrates the outer through hole 10 and the inner through hole 33 on both sides of the penetrating pin tube 1 respectively. Then it is inserted from the inner wall of the abdominal passage and penetrates the abdominal wall fascia, and finally extends to the hollow part of the abdominal cavity.

[0026] Example 3, see Figures 1-8 Unlike the above embodiments, the external drive component 4 includes a motor 41 and a rotating shaft 42. The motor 41 is fixed in the insertion tube 31 and the output shaft is fixed with a driving bevel gear 43. The rotating shaft 42 is rotatably connected to the tail end of the insertion tube 31. A driven bevel gear 44 is fixed on the rotating shaft 42. The driven bevel gear 44 meshes with the driving bevel gear 43. One end of the positioning block 34 is fixedly connected to the rotating shaft 42.

[0027] Among them, the motor 41 is a micro stepper motor 41 or a servo motor 41. When the external drive component 4 is started, the motor 41 runs and drives the active bevel gear 43 to rotate. When the active bevel gear 43 rotates, it drives the driven bevel gear 44 to rotate. When the driven bevel gear 44 rotates, it drives the rotating shaft 42 to rotate. When the rotating shaft 42 rotates, it drives the positioning block 34 to swing around the axis of the rotating shaft 42, thereby adjusting the angle of the clamping block 5 so that the clamping block 5 can switch between horizontal and vertical states. By setting an external drive component 4, the motor 41 drives the rotating shaft 42 to rotate, which in turn drives the clamping block 5 to swing. This facilitates the automatic adjustment of the angle of the clamping block 5, thereby adapting to the usage requirements at different stages.

[0028] Example 4, see Figures 1-8 Unlike the above embodiments, the positioning block 34 has a cavity 36 inside, and the inner side walls of the recess 35 are provided with sliding grooves 37. The sliding grooves 37, the recess 35 and the cavity 36 are connected. The inner driving member 6 is an electromagnet and is fixed in the cavity 36. The two clamping blocks 5 are respectively installed in the two sliding grooves 37. The clamping block 5 includes a housing 51 that is slidably connected to the sliding groove 37. A permanent magnet 52 is fixed on the side of the housing 51 near the inner driving member 6. A straight strip hole 53 is opened on the top of the housing 51. A guide groove 38 is provided on the inner wall of the sliding groove 37. A movable block 54 is movably inserted into the inner wall of the housing 51. A pin 55 is fixed on the movable block 54. The pin 55 passes through the straight strip hole 53 and extends into the guide groove 38. The guide groove 38 includes an inclined groove and a straight groove connected at the ends. The inclined groove is located at the end of the straight groove near the cavity 36.

[0029] In the initial state, the straight strip hole 53 extends vertically along the groove 37, the straight groove is parallel to the direction of the groove 37, the movable block 54 retracts into the shell 51, the permanent magnet 52 is attracted to the electromagnet, and the pin 55 passes through the straight strip hole 53 and extends into the inclined groove. A silicone layer is provided on the opposite side of the two movable blocks 54. When the two movable blocks 54 are combined to clamp the suture, the silicone layer is mainly used to contact the suture to maintain a moderate clamping force. In use, when the puncture device body 2 is inserted for the first time, it extends into the notch 35. The puncture device body 2 puts the suture into the notch 35, and the suture hangs down in the notch 35. The electromagnet is activated to change the direction of the current in the electromagnet, which forces the magnetic pole of the electromagnet to change, thereby pushing the permanent magnet 52. This causes the housing 51 to move along the slide groove 37. When the housing 51 moves, the inclined groove drives the pin 55 to move in the slotted hole, which drives the movable block 54 to move from the housing 51 into the notch 35. At this time, the two movable blocks 54 merge into the notch 35 at the same time, clamping the suture. Afterwards, when the pin moves to the straight groove, the movable block 54 no longer moves relative to the housing 51, but slides along the slide groove 37 with the housing 51. This causes the end of the suture to move to the far end of the notch 35. Similarly, when the electromagnet is activated again, it attracts the permanent magnet 52, which can reset the housing 51 and the movable block 54. By setting up clamping block 5 and inner driving component 6, electromagnets can be used to drive the clamping block 5 to merge and move, which facilitates the fixing of the suture and subsequent positioning of the suture, and makes it convenient to complete the threading work efficiently in blind operation.

[0030] Example 5, see Figures 1-8 Unlike the above embodiments, the top of the sealing chamber 12 has two symmetrically distributed positioning holes 7, and the tube seat 32 is fixed with a protrusion 8 that matches the positioning holes 7.

[0031] When installing the positioner 3, the protrusion 8 on the tube seat 32 is inserted into the positioning hole 7 at the top of the sealing chamber 12, which can position the positioner 3 and prevent the positioner 3 from moving randomly during use, thus improving the accuracy.

[0032] Example 6, see Figures 1-8 Unlike the above embodiments, the puncture device body 2 is provided with a suture tube 21 inside, and a movable handle 22 is provided at the top of the puncture device body 2. A cover 23 is engaged and installed on the movable handle 22. A take-up reel 24 is movably installed inside the cover 23. A suture is fixed and wound on the take-up reel 24. The suture passes through the inner cavity of the suture tube 21 and extends to the bottom of the puncture device body 2.

[0033] The take-up reel 24 is detachable. The movable handle 22 is used to operate the gripper inside the bottom of the puncture device body 2. This is existing technology and will not be described in detail. By setting the take-up reel 24, the suture can be used continuously. After each use, a section of suture is left at the bottom of the puncture device body 2 and then cut. When the suture on the take-up reel 24 is used up, the cover 23 is removed and a new take-up reel 24 is replaced.

[0034] Example 7, see Figures 1-8Unlike the above embodiments, the outer wall of the puncture tube 11 is fixedly sleeved with a silicone membrane sleeve 9, which is matched with the position of the external through hole 10 and completely covers the external through hole 10.

[0035] The silicone membrane sheath 9 provides a sealing effect, preventing blood or tissue fluid from flowing into the pin tube 1 during the early and middle stages of laparoscopic surgery. During the later suturing process, the trocar body 2 can directly puncture the silicone membrane sheath 9 without affecting the suturing process.

[0036] Example 8, see Figures 1-8 Unlike the above embodiments, the notch 35 is located at the end of the positioning block 34 away from the rotating shaft 42, and one end of the notch 35 faces the cavity 36 and is set in a V shape.

[0037] One end of the notch 35 is set in a V shape to guide the hanging suture, forcing the suture to be in the middle of the notch 35.

[0038] Example 9: This example discloses an abdominal wall suturing method. This abdominal wall suturing method uses an abdominal wall suture device from the above examples. The steps include: S1, first inserting the locator 3 into the pin tube 1, activating the locator 3 to position the pin tube 1, and adjusting the initial position of the pin tube 1 according to the positioning; S2, inserting the trocar body 2 to puncture one side of the fascia and inserting the suture into the abdominal cavity; S3, activating the locator 3 again to clamp the suture in the abdominal cavity and pull it to the other side of the pin tube 1; S4, inserting the trocar body 2 a second time to puncture the other side of the fascia and clamp the suture on the locator 3, and then pulling the suture out of the body; S5, removing the locator 3 and tightening the suture.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An abdominal wall suturing device, comprising a pin tube (1), a trocar body (2), and a locator (3), characterized in that: The pin tube (1) is provided with an external through hole (10). The positioner (3) includes a tube (31) that can be inserted into the pin tube (1) and a tube seat (32) provided at the head end of the tube (31). The tube (31) is provided with an internal through hole (33). A positioning block (34) is provided outside the tail end of the tube (31). An external driving member (4) is provided inside the tail end of the tube (31). The external driving member (4) is used to drive the positioning block (34) to swing. A notch (35) is opened on the positioning block (34). Clamping blocks (5) are installed on both sides of the inner wall of the notch (35). An internal driving member (6) is also installed in the positioning block (34). The internal driving member (6) is used to drive the two clamping blocks (5) to merge and move. When the cannula (31) is inserted into the pin tube (1), the external drive (4) operates, forcing the positioning block (34) to swing to the horizontal. When the horizontal positioning block (34) is in contact with the inner wall of the abdominal cavity, it positions the pin tube (1). When the puncture device body (2) is initially inserted into the suture, the inner drive (6) and the outer drive (4) work together to force the clamping block (5) to merge and hold the suture and then flip to the other side of the pin tube (1), so that when the puncture device body (2) is inserted into the abdominal cavity for the second time, it can accurately hold the suture in the notch (35).

2. The abdominal wall suturing device according to claim 1, characterized in that: The pin tube (1) includes a puncture tube (11) for insertion into an abdominal orifice and a sealing chamber (12) provided at the top of the puncture tube (11). An external through hole (10) is provided on the puncture tube (11), and an oblique guide hole (13) is provided on the side of the sealing chamber (12).

3. The abdominal wall suturing device according to claim 1, characterized in that: The external drive unit (4) includes a motor (41) and a rotating shaft (42). The motor (41) is fixed in the insertion tube (31) and the output shaft is fixed with a driving bevel gear (43). The rotating shaft (42) is rotatably connected to the tail end of the insertion tube (31). A driven bevel gear (44) is fixed on the rotating shaft (42). The driven bevel gear (44) meshes with the driving bevel gear (43). One end of the positioning block (34) is fixedly connected to the rotating shaft (42).

4. The abdominal wall suturing device according to claim 3, characterized in that: The positioning block (34) has a cavity (36) inside. The inner side walls of the recess (35) are provided with sliding grooves (37). The sliding grooves (37), the recess (35) and the cavity (36) are connected. The inner drive member (6) is an electromagnet and is fixed in the cavity (36). The two clamping blocks (5) are respectively installed in the two sliding grooves (37). The clamping block (5) includes a shell (51) that is slidably connected to the sliding groove (37). A permanent magnet (52) is fixed on the side of the shell (51) near the inner drive member (6). A straight strip hole (53) is opened on the top of the shell (51). A guide groove (38) is provided on the inner wall of the sliding groove (37). A movable block (54) is movably inserted into the inner wall of the shell (51). A pin (55) is fixed on the movable block (54). The pin (55) passes through the straight strip hole (53) and extends into the guide groove (38).

5. An abdominal wall suturing device according to claim 4, characterized in that: The guide groove (38) includes an inclined groove and a straight groove connected at the ends, with the inclined groove disposed at one end of the straight groove near the cavity (36).

6. An abdominal wall suturing device according to claim 2, characterized in that: The top of the sealed chamber (12) has two symmetrically distributed positioning holes (7), and the tube seat (32) is fixed with a protrusion (8) that matches the positioning holes (7).

7. The abdominal wall suturing device according to claim 1, characterized in that: The puncture device body (2) is provided with a suture tube (21), and a movable handle (22) is provided at the top of the puncture device body (2). A cover (23) is fitted onto the movable handle (22), and a take-up reel (24) is movably installed inside the cover (23). A suture is fixed and wound onto the take-up reel (24), and the suture passes through the inner cavity of the suture tube (21) and extends to the bottom of the puncture device body (2).

8. An abdominal wall suturing device according to claim 2, characterized in that: The outer wall of the puncture tube (11) is fixedly fitted with a silicone membrane sleeve (9), which is matched with the position of the external through hole (10) and completely covers the external through hole (10).

9. An abdominal wall suturing device according to claim 3, characterized in that: The notch (35) is located at the end of the positioning block (34) away from the rotating shaft (42), and one end of the notch (35) faces the cavity (36) and is set in a V shape.

10. A method for suturing the abdominal wall, characterized in that: This abdominal wall suturing method uses an abdominal wall suture device as described in any one of claims 1-9, and the steps include: S1, first inserting the locator (3) into the pin tube (1), activating the locator (3) to position the pin tube (1), and adjusting the initial position of the pin tube (1) according to the positioning; S2, inserting the puncture device body (2) to puncture one side of the fascia and inserting the suture into the abdominal cavity; S3, activating the locator (3) again, clamping the suture in the abdominal cavity and pulling it to the other side of the pin tube (1); S4, inserting the puncture device body (2) a second time to puncture the other side of the fascia and clamping the suture on the locator (3), and then pulling the suture out of the body; S5, disassembling the locator (3) and tightening the suture.

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