Sewing thread passing device

Abstract

The invention provides a suture threading device, the two sides of the suture threading device in the length direction are a head part and a tail part respectively, the suture threading device comprises a main body arranged in the length direction, and one side of the head part of the main body in the vertical direction is provided with an occlusion structure; the side, opposite to the main body head, of the occlusion structure is the tissue side of the occlusion structure and the tissue side of the main body head, and a tissue positioning area with an opening facing the main body head is arranged between the tissue side of the occlusion structure and the tissue side of the main body head. According to the suture threading device, the tissue needing threading can be placed in the tissue positioning area through the opening, the meshing structure is driven by the driving structure to move so as to close the opening of the tissue positioning area, clamping and positioning of the tissue are completed, and the thread threading structure is further driven by the driving structure to move; and enabling the thread hanging piece to wind from the head of the tissue positioning area to the tail of the tissue positioning area through the lower part of the tissue positioning area along the movement track, thereby finishing thread passing of the target tissue.

Description

Technical Field

[0001] The invention relates to the technical field of suture thread passers, and in particular to a suture thread passer that can be used for ligament thread passing and meniscus root tear. Background Art

[0002] In arthroscopic surgery, ligament reconstruction and meniscus repair techniques continue to develop. Among them, meniscus root tears have the characteristics of deep anatomical location and poor blood supply.

[0003] Traditional manual suture threading technology is the basic operating method for ligament reconstruction and meniscus root tear repair. Doctors need to use a needle holder to clamp the suture and repeatedly puncture and guide the thread in the joint space. When treating meniscus root tears, the lesion area is blocked by the bony structure, and manual suture threading often requires multi-channel assistance, which takes a long time.

[0004] Therefore, in order to solve the above problems, the present invention proposes a suture thread passer that can quickly pass the thread through tissue in a small space. Summary of the Invention

[0005] In order to solve the above problems existing in the existing manual threading, the present invention provides a suture threader.

[0006] According to one object of the present invention, the present invention provides a suture thread passer, wherein the two sides of the suture thread passer in the length direction are respectively a head and a tail, the suture thread passer includes a main body arranged along the length direction, a bite structure is provided on one side of the head of the main body in the vertical direction, the side opposite to the bite structure and the main body head is the tissue side of both, a tissue positioning area with an opening facing the main body head is provided between the tissue side of the bite structure and the tissue side of the main body head, and the bite structure and the main body are movably connected to open and close the opening of the tissue positioning area;

[0007] A wire-passing structure is provided on the tissue side of the main body head, and a wire-hanging member is provided on the head of the wire-passing structure. The wire-passing structure and the tissue side of the main body head are movably connected so that the wire-hanging member has an arc-shaped movable track, and the movable track sequentially connects the upper part of the opening of the tissue positioning area, the lower part of the tissue positioning area, and the tail of the tissue positioning area;

[0008] The tail of the wire-passing structure is provided with a driving structure, and the driving structure drives and connects the engaging structure and the wire-passing structure respectively.

[0009] Preferably, an arc-shaped guide is provided on the tissue side of the head of the main body, the wire-passing structure is an open annular structure, the wire-passing structure is movably connected to the inner side of the arc-shaped guide along the movable trajectory, the tail of the bite structure and the main body are connected by a rotating pair, the head of the bite structure corresponds to the opening of the tissue positioning area, and a through hole arranged in the vertical direction is opened in the middle of the bite structure, and the through hole is located on the movable trajectory of the wire-passing structure.

[0010] Preferably, one end of the head of the wire-passing structure is a sharp tissue-penetrating end.

[0011] Preferably, the suture thread passer has at least four consecutively arranged working states, namely, a ready state, a clamping state, a first thread passing state and a second thread passing state;

[0012] When the suture thread passing device is in a ready state, the opening of the tissue positioning area is opened, and the head of the thread passing structure is located above the opening of the tissue positioning area;

[0013] When the suture thread guide is in a clamping state, the opening of the tissue positioning area is closed;

[0014] When the suture thread guide is in the first thread-passing state, the head of the thread-passing structure moves along the active trajectory to the tail of the tissue positioning area, and the thread-passing structure and the tissue side of the main body head are closed;

[0015] When the suture thread passer is in the second thread passing state, the head of the thread passing structure continues to move along the active trajectory to above the opening of the tissue positioning area, the tail of the thread passing structure and the top of the opening of the tissue positioning area form a tissue outlet, the opening of the tissue positioning area is opened, and the opening of the tissue positioning area and the tissue outlet coincide with each other.

[0016] Preferably, the suture thread passer has at least three consecutively arranged working states, namely, a ready state, a clamping state and a thread passing state;

[0017] When the suture thread passing device is in a ready state, the opening of the tissue positioning area is opened, and the head of the thread passing structure is located above the opening of the tissue positioning area;

[0018] When the suture thread guide is in a clamping state, the opening of the tissue positioning area is closed;

[0019] When the suture thread passer is in the thread passing state, the head of the thread passing structure moves along the active track to the tail of the tissue positioning area.

[0020] Preferably, a transmission tooth is provided on the radial outer side of the wire-passing structure, the main body is configured to be hollow, a transmission opening communicating with the inside and outside of the main body is opened on the tissue side of the main body head, and the transmission tooth on the wire-passing structure passes through the transmission opening and is placed on the inner side of the main body head;

[0021] The driving structure includes two head gears, which are arranged on the inner side of the main body head. The head gears are arranged at intervals on both sides of the wire passing structure in the length direction of the suture wire passer. The head gears are connected by transmission, and the spacing between the two head gears is smaller than the spacing of the opening of the wire passing structure.

[0022] Preferably, the two head gears are respectively a first head gear and a second head gear, wherein the first head gear is arranged close to the head of the main body, and the first head gear and the second head gear are connected by a transmission belt;

[0023] The driving structure further includes a fixed handle and a movable handle provided at the tail of the main body, the fixed handle and the movable handle being connected via a rotating pair, and the end of the movable handle is drivingly connected to one of the head gears.

[0024] Preferably, the driving structure further includes:

[0025] A first body gear and a second body gear are arranged inside the main body, and the first body gear and the second body gear are arranged at intervals along the length direction of the suture thread passer, wherein the first body gear is arranged close to the head of the main body, the first body gear and the second body gear are connected by a transmission belt, the first body gear and the second head gear are meshed, the second body gear and the transmission gear plate are meshed, and the transmission gear plate is slidably arranged on the inner side of the main body along the length direction of the suture thread passer, and the transmission gear plate and the movable handle are connected by a flexible member.

[0026] Preferably, the engaging structure is plate-shaped, the tail of the engaging structure and the outer side of the main body are connected via a rotating shaft, the outer side of the rotating shaft is connected to a coaxially arranged engaging gear, and the driving structure further comprises:

[0027] An engaging tooth plate, the engaging tooth plate being slidably disposed on the inner side of the main body along the length direction of the suture thread passer, and the engaging tooth plate being meshed with the engaging gear;

[0028] The excitation member is installed at the tail of the main body through a rotating shaft, and a coaxially arranged excitation gear is connected to the outer side of the rotating shaft. The excitation gear is engaged with the engaging tooth plate, wherein the excitation member and the movable handle are arranged on the same side of the main body.

[0029] Preferably, an elastic member is provided between the excitation member and the main body.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The suture thread passer can place the tissue to be passed through the opening in the tissue positioning area, and drive the occlusal structure to move through the driving structure to close the opening of the tissue positioning area, thereby completing the clamping and positioning of the tissue. The driving structure further drives the thread passing structure to move, so that the hanging piece follows the moving trajectory from the head of the tissue positioning area through the bottom of the tissue positioning area to the tail of the tissue positioning area, thereby completing the thread passing of the target tissue.

[0032] The present invention is further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is an overall schematic diagram of a suture thread guide according to the present invention;

[0034] Figure 2 This is a schematic diagram of a suture thread guide in a ready state according to the present invention;

[0035] Figure 3 This is a schematic diagram of a clamping state of a suture thread guide according to the present invention;

[0036] Figure 4 It is a schematic diagram of a state between the clamping state and the first thread-passing state of the suture thread passer of the present invention;

[0037] Figure 5 This is a schematic diagram of a first thread-passing state of a suture thread passer according to the present invention;

[0038] Figure 6 It is a schematic diagram of a state between a first thread-passing state and a second thread-passing state of a suture thread-passing device according to the present invention;

[0039] Figure 7 This is a schematic diagram of a second thread-passing state of a suture thread-passing device according to the present invention;

[0040] Figure 8 This is a schematic diagram from one viewing angle of the connection between the thread hanging member and the thread passing structure of the suture thread passer described in the present invention. DETAILED DESCRIPTION

[0041] The following description is intended to fully illustrate the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are intended to be exemplary only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0042] See also Figure 1-8 The present invention provides a technical solution: a suture thread passer, wherein the two sides of the suture thread passer in the length direction X are respectively a head and a tail, the suture thread passer comprises a main body 100 arranged along the length direction X, a bite structure 200 is provided on one side of the head of the main body 100 in the vertical direction, the bite structure 200 and the side opposite to the head of the main body 100 are the tissue side a of both, a tissue positioning area A with an opening toward the head of the main body 100 is provided between the tissue side a of the bite structure 200 and the tissue side a of the head of the main body 100, and the bite structure 200 and the main body 100 are movably connected to open and close the opening of the tissue positioning area A;

[0043] A wire-passing structure 300 is provided on the tissue side a of the head of the main body 100. A wire-hanging member 301 is provided on the head of the wire-passing structure 300. The wire-passing structure 300 and the tissue side a of the head of the main body 100 are movably connected so that the wire-hanging member 301 has an arc-shaped movable track, which sequentially connects the upper part of the opening of the tissue positioning area A, the lower part of the tissue positioning area A, and the tail of the tissue positioning area A.

[0044] A driving structure 400 is provided at the tail of the wire-passing structure 300 , and the driving structure 400 drives and connects the engaging structure 200 and the wire-passing structure 300 , respectively.

[0045] During use, the end of the wire to be sutured is first hung on the wire hanging piece 301, the patient's skin is cut, the head end of the main body 100 is placed in the patient's body, and the tissue to be passed through the line is placed in the tissue positioning area A through the opening of the tissue positioning area A. The driving structure 400 drives the bite structure 200 to move to close the opening of the tissue positioning area A, and further drives the wire passing structure 300 to move through the driving structure 400, so that the wire hanging piece 301 moves along the moving trajectory from the head of the tissue positioning area A through the bottom of the tissue positioning area A to the tail of the tissue positioning area A, completing the passing of the target tissue, resetting the driving structure 400, resetting the bite structure 200 and the wire passing structure 300, and withdrawing the device from the wound.

[0046] In this embodiment, an arc-shaped guide member 101 is provided on the tissue side a of the head of the main body 100, and the wire-passing structure 300 is an open annular structure. The wire-passing structure 300 is movably connected to the inner side of the arc-shaped guide member 101 along the movable trajectory. The tail of the bite structure 200 and the main body 100 are connected by a rotating pair. The head of the bite structure 200 corresponds to the opening of the tissue positioning area A. A through hole arranged in a vertical direction is opened in the middle of the bite structure 200, and the through hole is located on the movable trajectory of the wire-passing structure 300.

[0047] When used in a scenario where tissue needs to be sutured, one end of the head of the wire-passing structure 300 is a sharp tissue-penetrating end 302 for penetrating the tissue to achieve a suturing effect.

[0048] See also Figure 8 The wire hanging member 301 is configured as a cylindrical structure, and a guide groove connecting both sides in the width direction is opened on the wire passing structure 300. The guide groove is arranged along the length direction of the wire passing structure 300. The wire hanging member 301 is slidably connected in the guide groove, and the wire hanging member 301 is arranged along the width direction of the wire passing structure 300. By limiting the connection method between the wire hanging member 301 and the guide groove, it is ensured that when the wire hanging member 301 follows the movement of the wire passing structure 300, a large space is reserved between the tissue side a of the head of the main body 100 and the wire hanging member 301, so that the PDS line can pass through the wire hanging member 301 and bend, thereby smoothly completing the wire passing action.

[0049] Furthermore, an elastic reset member is provided between the line hanging member 301 and the line passing structure 300, and the line hanging member 301 can be reset by the elastic reset member for reuse.

[0050] During the wire passing process, when the wire hanging piece 301 follows the wire passing structure 300 to the tail of the tissue positioning area A, the wire hanging piece 301 and the wire passing structure 300 move relative to each other, that is, the wire hanging piece 301 slides in the guide groove, and the tissue penetration end 302 of the wire passing structure 300 continues to move upward.

[0051] See also Figure 2-7 The suture thread passer has at least four consecutive working states, namely a ready state, a clamping state, a first thread passing state and a second thread passing state;

[0052] When the suture thread guide is in a ready state, the opening of the tissue positioning area A is open, and the head of the thread guide structure 300 is located above the opening of the tissue positioning area A;

[0053] When the suture thread guide is in the clamping state, the opening of the tissue positioning area A is closed;

[0054] When the suture thread guide is in the first thread-passing state, the head of the thread-passing structure 300 moves along the active trajectory to the tail of the tissue positioning area A, and the thread-passing structure 300 and the tissue side a of the head of the main body 100 are closed;

[0055] When the suture thread passer is in the second thread passing state, the head of the thread passing structure 300 continues to move along the active trajectory to above the opening of the tissue positioning area A, and the tail of the thread passing structure 300 and the above the opening of the tissue positioning area A form a tissue outlet, the opening of the tissue positioning area A is opened, and the opening of the tissue positioning area A and the tissue outlet coincide with each other.

[0056] The radial outer side of the wire-passing structure 300 is provided with a transmission tooth 303. The main body 100 is configured to be hollow. The tissue side a of the head of the main body 100 is provided with a transmission opening that connects the inside and outside of the main body 100. The transmission tooth 303 on the wire-passing structure 300 passes through the transmission opening and is placed on the inner side of the head of the main body 100.

[0057] The driving structure 400 includes two head gears, which are arranged on the inner side of the head of the main body 100. The head gears are spaced apart on both sides of the wire-passing structure 300 in the length direction X of the suture wire-passing device. The head gears are connected by a transmission connection. The spacing between the two head gears is smaller than the spacing between the openings of the wire-passing structure 300, so that when the opening of the wire-passing structure 300 moves toward between the two head gears, at least one of the head gears can engage with the transmission teeth 303 on the wire-passing structure 300, thereby realizing that the wire-passing structure 300 drives the wire to be wound around the tissue;

[0058] Specifically, the two head gears are respectively a first head gear 403 and a second head gear 404, wherein the first head gear 403 is arranged close to the head of the main body 100, and the first head gear 403 and the second head gear 404 are connected by a transmission belt;

[0059] The driving structure 400 further includes a fixed handle 401 and a movable handle 402 provided at the rear of the main body 100 . The fixed handle 401 and the movable handle 402 are connected via a rotating pair, and the end of the movable handle 402 is drivingly connected to one of the head gears.

[0060] More specifically, the driving structure 400 further includes:

[0061] A first body gear 405 and a second body gear 406 are arranged inside the main body 100, and the first body gear 405 and the second body gear 406 are arranged at intervals along the length direction X of the suture thread passer, wherein the first body gear 405 is arranged close to the head of the main body 100, and the first body gear 405 and the second body gear 406 are connected by a transmission belt, the first body gear 405 and the second head gear 404 are engaged with each other, and the second body gear 406 and the transmission gear plate 407 are engaged with each other, and the transmission gear plate 407 is slidingly arranged on the inner side of the main body 100 along the length direction X of the suture thread passer, and the transmission gear plate 407 and the movable handle 402 are connected by a flexible member 408. As one of the optional options, the flexible member 408 is a flexible wire.

[0062] The engaging structure 200 is plate-shaped. The tail of the engaging structure 200 is connected to the outer side of the main body 100 via a rotating shaft. The outer side of the rotating shaft is connected to a coaxial engaging gear 409. The driving structure 400 further includes:

[0063] An engaging tooth plate 410 , which is slidably disposed on the inner side of the main body 100 along the length direction X of the suture thread passer, and is engaged with the engaging gear 409 ;

[0064] The triggering member 411 is mounted on the rear end of the main body 100 via a rotating shaft. A coaxially arranged triggering gear 413 is connected to the outer side of the rotating shaft. The triggering gear 413 is engaged with the engaging tooth plate 410. The triggering member 411 and the movable handle 402 are disposed on the same side of the main body 100. Furthermore, an elastic member 412 is disposed between the triggering member 411 and the main body 100. The elastic member 412 is a spring.

[0065] How it works:

[0066] First, the suture thread guide is switched to the clamping state, and the distal end of the trigger member 411 is moved forward. At this time, the elastic member 412 is not compressed, the occlusal structure 200 of the head of the main body 100 is closed, and the opening of the tissue positioning area A is closed to reduce the size of the head and facilitate access to the wound.

[0067] During operation, the end of the triggering member 411 is pressed, and the end of the triggering member 411 moves backward, the elastic member 412 is compressed, the triggering member 411 drives the triggering gear 413 to rotate, and the triggering gear 413 drives the bite plate 410 to move forward, and the bite plate 410 drives the bite structure 200 to open through the bite gear 409. At this time, the suture line is in a ready state, the bite structure 200 is placed in an appropriate position, and the tissue to be sutured is passed through the opening into the tissue positioning area A, and the triggering member 411 is released. The bite structure 200 is re-aligned, and the suture line is in a clamping state.

[0068] Press the movable handle 402, the flexible member 408 above the movable handle 402 drives the transmission gear plate 407 to slide, the transmission gear plate 407 drives the second body gear 406 to rotate counterclockwise, the second body gear 406 drives the first body gear 405 to rotate counterclockwise through the transmission belt, the first body gear 405 drives the second head gear 404 to rotate clockwise, the second head gear 404 drives the first head gear 403 to rotate clockwise through the transmission belt, the head gear drives the wire-passing structure 300 to rotate counterclockwise, the wire-passing structure 300 moves along the movable track, and the wire-passing structure 300 Passing through the through hole on the occlusal structure 200, the wire hanging piece 301 at the head of the wire passing structure 300 reaches the tail of the tissue positioning area A, and the transmission tooth 303 at the head of the wire passing structure 300 is engaged with the second head gear 404. At this time, the wire hanging piece 301 also brings the wire head to the back of the tissue. At this time, the suture thread passer is in the first wire passing state. Continue to press the movable handle 402. The head of the wire passing structure 300 continues to move along the active trajectory, and the suture thread passer is adjusted to the second wire passing state. The suture thread passer is withdrawn from the body, and the movable handle 402 and the excitation piece 411 are reset to complete the wire passing.

[0069] In some embodiments of the present invention, the suture thread guide has the following application scenarios:

[0070] 1. Repair of partial avulsion of the femoral insertion of the anterior cruciate ligament

[0071] When the femoral attachment point of the anterior cruciate ligament is partially avulsed, the suture threader can quickly and efficiently complete the threading and ligation of the anterior cruciate ligament with the assistance of arthroscopy to form a strong surrounding structure. Subsequently, the outer row of anchors are implanted at the femoral attachment point and the tail end of the suture is fixed with the anchors to restore the physiological tension of the anterior cruciate ligament attachment point.

[0072] 2. Repair of avulsion fracture of the tibial insertion of the anterior cruciate ligament

[0073] When the tibial attachment point of the anterior cruciate ligament is accompanied by an avulsion fracture, the suture thread guide can also be used to quickly ligate and wrap the suture around the body of the ligament. Subsequently, the bone tunnel is drilled after positioning the anterior cruciate ligament locator on the tibial side, and the tail end of the suture is led out of the bone tunnel and screwed into the screw for fixation, thereby achieving stable reduction of the avulsion fracture at the tibial attachment point and restoration of ligament tension. The suture thread guide simplifies the traditional operation process, improves suturing efficiency, reduces operation time, reduces the risk of ligament injury, and is suitable for repair surgeries of various types of anterior cruciate ligament attachment point injuries. Its structural design facilitates operation in a narrow joint cavity, and is particularly suitable for complex and minimally invasive repair scenarios, and has broad clinical application prospects.

[0074] In addition, the suture thread guide is also suitable for a variety of other arthroscopic soft tissue injury repair surgeries, including but not limited to:

[0075] 1. Arthroscopic suture of rotator cuff injury

[0076] During shoulder arthroscopic surgery, this suture thread guide can be used to repair rotator cuff tendon injuries. Through its precise suture puncture design, the suture quickly passes through the rotator cuff rupture, effectively improving suturing efficiency and reducing the risk of tissue damage, providing a more reliable and efficient solution for rotator cuff repair.

[0077] 2. Suture repair of meniscus root tears

[0078] When repairing meniscus root tears under knee arthroscopy, the suture thread guide can easily pass the suture through the torn end of the meniscus root to form a stable loop suture, providing a reliable foundation for subsequent suture fixation through the bone tunnel, thereby effectively restoring the functional connection of the meniscus root and improving tissue healing rate and postoperative stability.

[0079] In summary, the multifunctional design of the suture thread guide significantly improves the efficiency and operational safety of arthroscopic soft tissue suturing, and has wide clinical applicability and promotion value.

[0080] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. The scope of the patent application of the present invention cannot be limited by these embodiments alone. That is, any equivalent changes or modifications made according to the spirit disclosed by the present invention still fall within the patent scope of the present invention.

Claims

1. A suture thread guide, wherein the two sides of the suture thread guide in the length direction (X) are respectively a head and a tail, characterized in that: The suture thread guide comprises a main body (100) arranged along a length direction (X), a head of the main body (100) is provided with a bite structure (200) on one side in the vertical direction, the bite structure (200) and the side opposite to the head of the main body (100) are tissue sides (a) of both, a tissue positioning area (A) with an opening toward the head of the main body (100) is provided between the tissue side (a) of the bite structure (200) and the tissue side (a) of the head of the main body (100), and the bite structure (200) and the main body (100) are movably connected to open and close the opening of the tissue positioning area (A); A wire-passing structure (300) is provided on the tissue side (a) of the head of the main body (100), and a wire-hanging member (301) is provided on the head of the wire-passing structure (300). The wire-passing structure (300) and the tissue side (a) of the head of the main body (100) are movably connected so that the wire-hanging member (301) has an arc-shaped moving track, and the moving track sequentially connects the upper part of the opening of the tissue positioning area (A), the lower part of the tissue positioning area (A), and the tail of the tissue positioning area (A); A driving structure (400) is provided at the tail of the wire-passing structure (300), and the driving structure (400) drives and connects the engaging structure (200) and the wire-passing structure (300) respectively.

2. A suture thread guide according to claim 1, characterized in that: An arc-shaped guide member (101) is provided on the tissue side (a) of the head of the main body (100), the line-passing structure (300) is an open annular structure, and the line-passing structure (300) is movably connected to the inner side of the arc-shaped guide member (101) along the movable trajectory. The tail of the bite structure (200) and the main body (100) are connected by a rotating pair, the head of the bite structure (200) corresponds to the opening of the tissue positioning area (A), and a through hole arranged in the vertical direction is opened in the middle of the bite structure (200), and the through hole is located on the movable trajectory of the line-passing structure (300).

3. A suture thread guide according to claim 2, characterized in that: One end of the head of the wire-passing structure (300) is a sharp tissue-penetrating end (302).

4. A suture thread guide according to claim 1, characterized in that: The wire hanging member (301) is configured as a cylindrical structure, and a guide groove connecting both sides in the width direction is provided on the wire passing structure (300), and the guide groove is arranged along the length direction of the wire passing structure (300). The wire hanging member (301) is slidably connected in the guide groove, and the wire hanging member (301) is arranged along the width direction of the wire passing structure (300).

5. A suture thread guide according to claim 1, characterized in that: The suture thread passer has at least four consecutively arranged working states, namely a ready state, a clamping state, a first thread passing state and a second thread passing state; When the suture thread guide is in a ready state, the opening of the tissue positioning area (A) is opened, and the head of the thread guide structure (300) is located above the opening of the tissue positioning area (A); When the suture thread guide is in a clamping state, the opening of the tissue positioning area (A) is closed; When the suture thread guide is in the first thread-passing state, the head of the thread-passing structure (300) moves along the active trajectory to the tail of the tissue positioning area (A), and the thread-passing structure (300) and the tissue side (a) of the head of the main body (100) are closed; When the suture thread passer is in the second thread passing state, the head of the thread passing structure (300) continues to move along the active trajectory to above the opening of the tissue positioning area (A), and the tail of the thread passing structure (300) and the top of the opening of the tissue positioning area (A) form a tissue outlet, the opening of the tissue positioning area (A) is opened, and the opening of the tissue positioning area (A) and the tissue outlet coincide with each other.

6. A suture thread guide according to claim 1, characterized in that: The radial outer side of the wire-passing structure (300) is provided with a transmission tooth (303); the main body (100) is configured to be hollow; the tissue side (a) of the head of the main body (100) is provided with a transmission opening communicating with the inside and outside of the main body (100); the transmission tooth (303) on the wire-passing structure (300) passes through the transmission opening and is placed on the inner side of the head of the main body (100); The driving structure (400) includes two head gears, the head gears being arranged on the inner side of the head of the main body (100), the head gears being spaced apart on both sides of the thread-passing structure (300) in the length direction (X) of the suture thread-passing device, the head gears being connected by transmission, and the spacing between the two head gears being smaller than the spacing of the opening of the thread-passing structure (300).

7. A suture thread guide according to claim 6, characterized in that: The two head gears are respectively a first head gear (403) and a second head gear (404), wherein the first head gear (403) is arranged close to the head of the main body (100), and the first head gear (403) and the second head gear (404) are connected by a transmission belt; The driving structure (400) further comprises a fixed handle (401) and a movable handle (402) arranged at the rear of the main body (100); the fixed handle (401) and the movable handle (402) are connected via a rotating pair, and the end of the movable handle (402) is drivingly connected to one of the head gears.

8. A suture thread guide according to claim 7, characterized in that: The driving structure (400) further includes: A first body gear (405) and a second body gear (406) are arranged inside the main body (100), and the first body gear (405) and the second body gear (406) are arranged at intervals along the length direction (X) of the suture thread passer, wherein the first body gear (405) is arranged close to the head of the main body (100), the first body gear (405) and the second body gear (406) are connected by a transmission belt, the first body gear (405) and the second head gear (404) are meshed with each other, the second body gear (406) and the transmission tooth plate (407) are meshed with each other, and the transmission tooth plate (407) is slidably arranged on the inner side of the main body (100) along the length direction (X) of the suture thread passer, and the transmission tooth plate (407) and the movable handle (402) are connected by a flexible member (408).

9. A suture thread guide according to claim 1, characterized in that: The engaging structure (200) is plate-shaped, and the tail of the engaging structure (200) is connected to the outer side of the main body (100) via a rotating shaft, and the outer side of the rotating shaft is connected to a coaxially arranged engaging gear (409). The driving structure (400) further includes: An engaging tooth plate (410), the engaging tooth plate (410) is slidably disposed on the inner side of the main body (100) along the length direction (X) of the suture thread passer, and the engaging tooth plate (410) is meshed with the engaging gear (409); An excitation member (411) is mounted on the tail of the main body (100) via a rotating shaft, a coaxially arranged excitation gear (413) is connected to the outer side of the rotating shaft, the excitation gear (413) is meshed with the engaging tooth plate (410), and the excitation member (411) and the movable handle (402) are arranged on the same side of the main body (100).

10. A suture thread guide according to claim 9, characterized in that: An elastic member (412) is provided between the excitation member (411) and the main body (100).

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