Accurate positioning fiber ring stitching instrument and operation method thereof

Abstract

The invention relates to the technical field of medical instruments, and discloses a precise positioning fibrous ring stitching instrument and an operation method thereof.The precise positioning fibrous ring stitching instrument comprises a shell, a rack is arranged at the bottom end of the interior of the shell, a gear is connected to the tooth end of the rack in a meshed mode, a first rotating shaft is fixedly arranged on one side of the gear, and the outer wall of the first rotating shaft is rotationally connected to the outer wall of the shell; the first rotating shaft penetrates through the shell and is fixedly provided with a knob, the knob is located on the side wall of the shell, a first puncture needle is arranged on the side wall of the shell, a thread guide needle is fixedly arranged at one end of the rack, the outer wall of the thread guide needle is arranged in the first puncture needle, and a sewing mechanism is arranged in the second puncture needle and the shell. A shearing mechanism is arranged in the second sliding groove of the shell. The fixed handle and the movable handle are operated through the suturing mechanism, the clamping head and the clamping block are used for conveniently clamping and processing the suturing line, complexity of traditional suturing operation is simplified, suturing efficiency is improved, and the problem that suturing operation is tedious is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a fiber ring suture device with precise positioning and its operation method. Background Art

[0002] In spinal-related surgical treatments, the treatment of the annulus fibrosus is a key link. Especially after surgeries such as nucleus pulposus removal, effective suturing of the annulus fibrosus is crucial. Traditional annulus fibrosus suture methods mainly rely on doctors' manual operations using ordinary suture instruments. However, these methods have many deficiencies.

[0003] Traditional suture operations are very cumbersome. Doctors need to repeatedly perform a series of steps such as puncturing, threading, and knotting. Each step requires a high degree of skill and experience, and the operation time is relatively long. This not only increases the doctor's work intensity and surgical difficulty, but also prolongs the operation time, increasing the risk of patients on the operating table and being unfavorable to the postoperative recovery of patients. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a fiber ring suture device with precise positioning and its operation method, which solves the problem of cumbersome suture operations.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A fiber ring suture device with precise positioning and its operation method, including a housing. At the bottom end inside the housing, there is a rack, and the tooth end of the rack is meshed with a gear. On one side of the gear, there is a rotating shaft one fixedly arranged. The outer wall of the rotating shaft one is rotatably connected to the outer wall of the housing. The rotating shaft one penetrates through the housing and is fixedly provided with a knob. The knob is located on the side wall of the housing. On the side wall of the housing, there is a puncture needle one. One end of the rack is fixedly provided with a wire needle, and the outer wall of the wire needle is arranged inside the puncture needle one. On the opposite side of the puncture needle one, there is a puncture needle two. One end of the puncture needle two is arranged on the side wall of the housing. Inside the puncture needle two and the housing, there is a suture mechanism. On one side of the outer wall of the housing, there is a chute one, and on the top of the housing, there is a chute two. Inside the chute two of the housing, there is a shearing mechanism.

[0006] Preferably, the suture mechanism includes a fixed handle. The outer wall of the fixed handle is arranged inside the chute one on the outer wall of the housing. One end of the fixed handle is fixedly provided with a fixed shell. Inside the chute one of the housing, there is a slider two slidably connected. On one side of the slider two, there is a connecting block fixedly arranged. One end of the connecting block is fixedly arranged on one side of the fixed shell. On the side wall of the fixed handle, there is a groove one. Inside the groove one of the fixed handle, there is a rotating shaft six fixedly arranged. The outer wall of the rotating shaft six is rotatably connected to a movable handle.

[0007] Preferably, one end of the movable handle is rotatably connected to a third connecting rod through a fifth rotating shaft. The outer wall of the third connecting rod is arranged inside the fixed shell. One end of the fixed shell is fixedly provided with a chuck. One end of the chuck is provided with a camera. A second groove is arranged inside the chuck. Third chutes are arranged on both sides of the chuck.

[0008] Preferably, a seventh rotating shaft is slidably connected in the third chute of the chuck. The outer wall of the seventh rotating shaft is arranged at one end of the third connecting rod. The middle of the outer wall of the seventh rotating shaft is rotatably connected to a fixed rod. One end of the fixed rod is provided with a clamping block. A torsion spring is arranged inside the clamping block. The fixed rod is located in the second groove of the chuck.

[0009] Preferably, the shearing mechanism includes a first slider. The two sides of the first slider are slidably connected in the second chute of the outer shell. A fixed plate is fixedly arranged at the bottom end of the first slider. A push rod is arranged at the bottom end of the fixed plate.

[0010] Preferably, sleeves are arranged on both sides of the fixed plate. The outer wall of the push rod is slidably connected inside the sleeves. Second rotating shafts are symmetrically arranged at the output end of the push rod. The outer wall of the second rotating shafts is rotatably connected to a first connecting rod. One end of the first connecting rod is rotatably connected to a third rotating shaft.

[0011] Preferably, a second connecting rod is rotatably connected to the outer wall of the third rotating shaft. One end of the second connecting rod is rotatably connected to a fourth rotating shaft. A shearing blade is rotatably connected to the outer wall of the fourth rotating shaft. A bearing plate is arranged at the bottom end of the fourth rotating shaft. One end of the bearing plate is fixedly arranged on one side of the outer shell.

[0012] The operation method of the precise positioning annulus fibrosus suture device includes the following steps: S1. Preoperative preparation: Conduct a comprehensive disinfection treatment on the precise positioning annulus fibrosus suture device to ensure that it meets the aseptic requirements of the operation and prevent infection during the operation. S2. Puncture operation: Align the first puncture needle and the second puncture needle with the annulus fibrosus part to be sutured. Rotate the knob to drive the first rotating shaft and the gear to rotate, and then the gear drives the rack to move, and the movement of the rack is the puncture operation. S3. Suture operation: Operate the fixed handle and the movable handle. The third connecting rod rotatably connected to one end of the movable handle through the fifth rotating shaft will move inside the fixed shell. Use the chuck and the clamping block to clamp the suture for suturing, and the camera assists in observation. S4. Shearing operation: After suturing, push the first slider to drive the fixed plate and the push rod at the bottom end to move. The outer wall of the push rod is slidably connected inside the sleeves. The second rotating shafts symmetrically arranged at its output end will drive the first connecting rod to rotate. The first connecting rod is connected to the second connecting rod through the third rotating shaft, and the second connecting rod is connected to the shearing blade through the fourth rotating shaft. Finally, the shearing blade cuts off the excess suture under the support of the bearing plate.

[0013] Working Principle: Suturing operation relies on the linkage of fixed and movable handles. The movable handle rotates and transmits motion to the structure inside the chuck through shaft 5 and connecting rod 3. The clamping block, in conjunction with the torsion spring, clamps and releases the suture thread. At the same time, the camera in the chuck provides real-time information.

[0014] This design integrates suturing functions and simplifies the traditional multi-tool operation process. The precise positioning of the annulus fibrosus suture device primarily works through the synergy of mechanical transmission and ingenious structural design. During the puncture process, rotating the knob drives shaft 1, which in turn drives the gear-driven rack to move linearly, allowing puncture needles 1 and 2, as well as the guide needle, to precisely penetrate the annulus fibrosus. This principle is based on the meshing action of the gear and rack to precisely control displacement, ensuring accurate puncture depth and position.

[0015] The shearing operation is based on the movement of slider 1, which drives the fixed plate and push rod. The push rod, guided by the cannula, pushes a series of rotating shafts and connecting rods, ultimately causing the shear blade to open and close under the support of the load plate, thus shearing the excess suture. This eliminates the inconvenience of traditional shearing methods that require additional tools and improves surgical efficiency and convenience. The entire stapler's components work together closely, forming an efficient operating system from puncture to suturing and shearing, providing a precise and convenient solution for annulus fibrosus suturing.

[0016] The present invention provides a precise positioning fiber ring suture device and an operating method thereof, which has the following beneficial effects: 1. The present invention uses a suturing mechanism to enable the clamp and clamp block to conveniently clamp and process the suture thread by operating the fixed handle and the movable handle, thereby simplifying the complexity of traditional suturing operations and improving suturing efficiency. At the same time, the camera on the clamp can assist the doctor in observing the suture site in real time, further improving the accuracy of the operation and solving the problem of cumbersome suturing operations.

[0017] 2. The present invention uses the meshing transmission of the gear and the rack to accurately control the puncture action of the puncture needle by rotating the knob, effectively improving the accuracy and stability of the puncture, reducing the damage to the fiber ring caused by puncture errors, laying a good foundation for subsequent suturing, and solving the problem of poor positioning puncture effect.

[0018] 3. The present invention uses a shearing mechanism provided in the second slide groove at the top of the shell 1 to conveniently shear excess sutures during surgery without the need for additional tools, thus avoiding the inconvenience and risks caused by tool switching, making the entire surgical process smoother and more efficient, shortening the operation time, reducing the surgical risks for patients, and solving the problem of frequent replacement of medical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front perspective schematic diagram of the present invention; Figure 2 This is a partial structural cross-sectional view of the outer shell of the present invention; Figure 3 This is a three-dimensional schematic diagram of the partial structure at the gear of the present invention; Figure 4 This is a schematic diagram of the clamping of the partial structure at the sewing mechanism of the present invention; Figure 5 This is a schematic diagram of the loosening of the partial structure at the sewing mechanism of the present invention; Figure 6 This is a three-dimensional schematic diagram of the partial structure at the clamping block of the present invention; Figure 7 This is a three-dimensional schematic diagram of the partial structure at the shearing mechanism of the present invention.

[0020] Among them, 1. Outer shell; 2. First slider; 3. Knob; 4. First puncture needle; 5. Second puncture needle; 6. Fixed handle; 7. Movable handle; 8. Second slider; 9. Push rod; 10. First rotating shaft; 11. Gear; 12. Rack; 13. Wire needle; 14. Sleeve; 15. Fixed plate; 16. Second rotating shaft; 17. First connecting rod; 18. Third rotating shaft; 19. Second connecting rod; 20. Fourth rotating shaft; 21. Shearing knife; 22. Fifth rotating shaft; 23. Sixth rotating shaft; 24. Fixed shell; 25. Chuck; 26. Camera; 27. Clamping block; 28. Connecting block; 29. Seventh rotating shaft; 30. Fixed rod; 31. Third connecting rod; 32. Bearing plate. Detailed implementation manners

[0021] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to the attached Figure 1 - attached Figure 6, an embodiment of the present invention provides a precise positioning annulus fibrosus suture device and its operation method, including a housing 1. At the bottom end inside the housing 1, there is a rack 12. The tooth end of the rack 12 is meshed and connected with a gear 11. On one side of the gear 11, a rotating shaft one 10 is fixedly arranged. The outer wall of the rotating shaft one 10 is rotatably connected to the outer wall of the housing 1. The rotating shaft one 10 penetrates through the housing 1 and is fixedly provided with a knob 3. The knob 3 is located on the side wall of the housing 1. A puncture needle one 4 is arranged on the side wall of the housing 1. One end of the rack 12 is fixedly provided with a guide wire needle 13. The outer wall of the guide wire needle 13 is arranged inside the puncture needle one 4. On the opposite side of the puncture needle one 4, there is a puncture needle two 5. One end of the puncture needle two 5 is arranged on the side wall of the housing 1. A suture mechanism is arranged inside the puncture needle two 5 and the housing 1. On one side of the outer wall of the housing 1, there is a chute one. At the top of the housing 1, there is a chute two. A shearing mechanism is arranged in the chute two of the housing 1. The suture mechanism includes a fixed handle 6. The outer wall of the fixed handle 6 is arranged in the chute one on the outer wall of the housing 1. One end of the fixed handle 6 is fixedly provided with a fixed shell 24. A slider two 8 is slidably connected in the chute one of the housing 1. On one side of the slider two 8, a connecting block 28 is fixedly arranged. One end of the connecting block 28 is fixedly arranged on one side of the fixed shell 24. A groove one is arranged on the side wall of the fixed handle 6. Inside the groove one of the fixed handle 6, a rotating shaft six 23 is fixedly arranged. The outer wall of the rotating shaft six 23 is rotatably connected with a movable handle 7. One end of the movable handle 7 is rotatably connected with a connecting rod three 31 through a rotating shaft five 22. The outer wall of the connecting rod three 31 is arranged inside the fixed shell 24. One end of the fixed shell 24 is fixedly provided with a chuck 25. One end of the chuck 25 is provided with a camera 26. A groove two is arranged inside the chuck 25. On both sides of the chuck 25, there are chutes three. A rotating shaft seven 29 is slidably connected in the chute three of the chuck 25. The outer wall of the rotating shaft seven 29 is arranged at one end of the connecting rod three 31. In the middle of the outer wall of the rotating shaft seven 29, a fixed rod 30 is rotatably connected. One end of the fixed rod 30 is provided with a clamping block 27. A torsion spring is arranged inside the clamping block 27. The fixed rod 30 is located in the groove two of the chuck 25.

[0023] Specifically, rotating knob 3, located on the side wall of housing 1 and connected to shaft 10 extending through the housing, causes shaft 10 to rotate gear 11. This gear 11 meshes with rack 12 at the bottom end of housing 1, causing rack 12 to move as gear 11 rotates. At this point, guidewire 13, located at one end of rack 12 and with its outer wall positioned within puncture needle 14, as well as puncture needles 14 and 2 (5) located on the side wall of housing 1, precisely puncture the annulus fibrosus under the force of rack 12. The outer wall of fixed handle 6 slides within groove 1 on the outer wall of housing 1. When operating fixed handle 6 and movable handle 7, which is rotatably connected to it via shaft 6 23, connecting rod 3 31, rotatably connected to one end of movable handle 7 via shaft 5 22, moves within fixed housing 24. A clamp 25 at one end of fixed housing 24 and a clamping block 27 connected thereto via a special structure cooperate with each other. The rotating shaft 7 29 slidably connected within the chute 3 on both sides of the chuck 25 is connected to one end of the connecting rod 3 31. When the doctor pinches the movable handle 7, the connecting rod 3 31, one end of which is connected by the rotating shaft 5 22, generates a corresponding displacement movement within the fixed housing 24. Because the connecting rod 3 31 is connected to the rotating shaft 7 29 fixed within the chuck 25, it drives the fixed rod 30 inside the chuck 25 to move, causing the clamping block 27 to achieve a clamping action under the drive of the connecting rod 3 31, thereby stably clamping the suture thread and ensuring a smooth suturing process. When the doctor releases the movable handle 7, the torsion spring located within the clamping block 27, due to its own elastic force, quickly expands the clamping block 27 to facilitate subsequent operation steps or suture thread replacement. Simultaneously, a camera 26 at one end of the chuck 25 can assist in observing the suture site.

[0024] The integrated design allows for convenient suturing operations on the same instrument, eliminating the need for multiple tools and complex manual operations required by traditional methods. This greatly simplifies the suturing process and enables quick and stable clamping and loosening of the suture thread, allowing doctors to efficiently suture the annulus fibrosus, improving suturing speed and quality. This solves the problem of cumbersome suturing operations.

[0025] Please see the attached Figure 1 -Attached Figure 2 , Attachment Figure 7, the shearing mechanism includes a first slider 2. The two sides of the first slider 2 are slidably connected in the second chute of the housing 1. A fixing plate 15 is fixedly arranged at the bottom end of the first slider 2. A push rod 9 is arranged at the bottom end of the fixing plate 15. Sleeve tubes 14 are arranged on both sides of the fixing plate 15. The outer wall of the push rod 9 is slidably connected inside the sleeve tubes 14. The output end of the push rod 9 is symmetrically provided with a second rotating shaft 16. The outer wall of the second rotating shaft 16 is rotatably connected with a first connecting rod 17. One end of the first connecting rod 17 is rotatably connected with a third rotating shaft 18. The outer wall of the third rotating shaft 18 is rotatably connected with a second connecting rod 19. One end of the second connecting rod 19 is rotatably connected with a fourth rotating shaft 20. The outer wall of the fourth rotating shaft 20 is rotatably connected with a shearing knife 21. A bearing plate 32 is arranged at the bottom end of the fourth rotating shaft 20. One end of the bearing plate 32 is fixedly arranged on one side of the housing 1.

[0026] Specifically, when the operation reaches the stage where the suture needs to be sheared, the doctor manually pushes the first slider 2 located in the second chute at the top of the housing 1. Since the two sides of the first slider 2 are closely slidably connected with the second chute, under the action of the thrust, the first slider 2 will move smoothly in a straight line along the track of the second chute. The bottom end of the first slider 2 is fixedly connected with the fixing plate 15, so the movement of the first slider 2 will directly drive the fixing plate 15 to move synchronously. And the push rod 9 arranged at the bottom end of the fixing plate 15 will also generate a displacement accordingly. At this time, because the outer wall of the push rod 9 is slidably connected inside the sleeve tubes 14, this structural design provides good guidance and support for the movement of the push rod 9, ensuring that the push rod 9 always maintains a stable straight-line movement state during the movement, avoiding deviation or shaking. As the push rod 9 advances forward, the second rotating shaft 16 symmetrically arranged at its output end will start to rotate under the push of the push rod 9. The rotation of the second rotating shaft 16 will drive the connected first connecting rod 17 to rotate around the second rotating shaft 16. One end of the first connecting rod 17 is rotatably connected with the second connecting rod 19 through the third rotating shaft 18, so the rotation of the first connecting rod 17 will be transmitted to the second connecting rod 19 through the third rotating shaft 18, causing the second connecting rod 19 to rotate around the third rotating shaft 18. The rotation of the second connecting rod 19 will further drive the connected fourth rotating shaft 20 to rotate. Since the shearing knife 21 is connected to the outer wall of the fourth rotating shaft 20, and a bearing plate 32 is arranged at the bottom end of the fourth rotating shaft 20, and one end of the bearing plate 32 is fixed on one side of the housing 1, providing a stable support basis for the entire shearing mechanism. Finally, the shearing knife 21 is driven to open and close under the support and guidance of the bearing plate 32, thereby completing the shearing operation of the redundant suture.

[0027] Through the precise transmission and cooperation of the mechanical structure, the stability of the movement track and shearing force of the shearing knife 21 is ensured, enabling the shearing process to proceed accurately without error, effectively avoiding accidental injuries to the surgical site caused by improper shearing operations, and at the same time ensuring that the suture effect is not affected. It solves the problem of frequent replacement of medical devices.

[0028] Please refer to the appendixFigure 1 - Attachment Figure 7 The operation method of a precise positioning annulus fibrosus suture device, comprising the following steps: S1. Preoperative preparation: conduct a comprehensive disinfection treatment on the precise positioning annulus fibrosus suture device to ensure that it meets the aseptic requirements of the operation and prevent infection during the operation; S2. Puncture operation: Align the puncture needle 4 and the puncture needle 5 with the annulus fibrosus part to be sutured. Rotate the knob 3 to drive the rotation of the first rotating shaft 10 and the gear 11, and then the gear 11 drives the rack 12 to move, and the movement of the rack 12 is used for the puncture operation; S3. Suture operation: Operate the fixed handle 6 and the movable handle 7. One end of the movable handle 7 rotates and is connected to the third connecting rod 31 through the fifth rotating shaft 22, and will move inside the fixed housing 24. Use the chuck 25 and the clamping block 27 to clamp the suture for suturing, and the camera 26 assists in observation; S4. Shearing operation: After the suture is completed, push the first slider 2 to drive the bottom fixing plate 15 and the push rod 9 to move. The outer wall of the push rod 9 is slidably connected inside the sleeve 14. The second rotating shaft 16 symmetrically arranged at its output end will drive the first connecting rod 17 to rotate. The first connecting rod 17 is connected to the second connecting rod 19 through the third rotating shaft 18, and the second connecting rod 19 is connected to the shearing knife 21 through the fourth rotating shaft 20. Finally, the shearing knife 21 cuts off the redundant suture under the support of the bearing plate 32.

[0029] Specifically, through conventional medical device sterilization processes, such as high-temperature and high-pressure sterilization and chemical disinfection, all components of the precise positioning fiber ring suture device, including the housing 1, puncture needle 1 4, puncture needle 2 5, suturing mechanism, and shearing mechanism, are thoroughly disinfected to eliminate any bacteria, viruses, and other microorganisms that may be present, ensuring that the device meets surgical sterility standards. When the knob 3 is rotated, it is fixedly connected to the rotating shaft 10, driving the rotating shaft 10 to rotate synchronously. The gear 11 fixed to the rotating shaft 10 rotates accordingly. Since the gear 11 meshes with the rack 12, the circular motion of the gear 11 drives the rack 12 to move in a linear direction. The puncture needle 1 4, puncture needle 2 5, and the guidewire 13 fixed to one end of the rack 12 and located inside the puncture needle 1 4 are connected to the rack 12 and will accurately penetrate the designated part of the fiber ring as the rack 12 moves, achieving the puncture action. When operating the fixed handle 6 and the movable handle 7, the movable handle 7 rotates relative to the fixed handle 6 around the rotating shaft 6 23, and the connecting rod 3 31, one end of which is connected by the rotating shaft 5 22, will produce a corresponding displacement change inside the fixed shell 24. Since the connecting rod 3 31 is connected to the rotating shaft 7 29 inside the chuck 25, this mechanical linkage enables the fixed rod 30 inside the chuck 25 to drive the clamping block 27 to move. When the doctor pinches the movable handle 7, the clamping block 27 realizes a clamping action under the drive of the connecting rod 3 31, thereby stably clamping the suture for suturing; when the doctor releases the movable handle 7, the torsion spring located in the clamping block 27 uses its own elastic force to open the clamping block 27, making it easier to adjust or replace the suture. At the same time, the camera 26 at one end of the chuck 25 collects image information of the suture site in real time, assisting the doctor in observing the operation and ensuring the accuracy of the suture. When slider 1 (2) is pushed, since both sides of slider 1 (2) are slidably connected within slot 2 of housing 1, it moves linearly along slot 2, driving the fixed plate 15 fixed at the bottom end to move synchronously, thereby causing push rod 9, located at the bottom end of fixed plate 15, to also move. Because the outer wall of push rod 9 is slidably connected within sleeve 14, the stability and directionality of push rod 9's movement are ensured. During the movement of push rod 9, shaft 2 (16) symmetrically arranged at its output end rotates with the displacement of push rod 9. The rotation of shaft 2 (16) drives the connected connecting rod 1 (17) to rotate. The rotation of connecting rod 1 (17) is then transmitted to connecting rod 2 (19) via shaft 3 (18), causing connecting rod 2 (19) to rotate around shaft 3 (18), thereby causing shaft 4 (20) connected to connecting rod 2 (19) to rotate. Ultimately, the shear blade 21 connected to the outer wall of shaft 4 (20) opens and closes with the support of support plate 32, completing the shearing of the excess suture thread.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Precision positioning annulus fibrosus suture device and its operation method, including a housing (1), characterized in that: At the bottom end inside the housing (1), a rack (12) is provided. The tooth end of the rack (12) is meshed with a gear (11). On one side of the gear (11), a first rotating shaft (10) is fixedly provided. The outer wall of the first rotating shaft (10) is rotatably connected to the outer wall of the housing (1). The first rotating shaft (10) penetrates through the housing (1) and is fixedly provided with a knob (3). The knob (3) is located on the side wall of the housing (1). A first puncture needle (4) is provided on the side wall of the housing (1). One end of the rack (12) is fixedly provided with a wire needle (13). The outer wall of the wire needle (13) is arranged inside the first puncture needle (4). On the opposite side of the first puncture needle (4), a second puncture needle (5) is provided. One end of the second puncture needle (5) is arranged on the side wall of the housing (1). A suture mechanism is arranged inside the second puncture needle (5) and the housing (1). On one side of the outer wall of the housing (1), a first chute is provided. On the top end of the housing (1), a second chute is provided. A shearing mechanism is arranged inside the second chute of the housing (1).

2. The precise positioning annulus fibrosus suture apparatus and its operation method according to claim 1, characterized in that: The suture mechanism includes a fixed handle (6). The outer wall of the fixed handle (6) is arranged inside the first chute on the outer wall of the housing (1). One end of the fixed handle (6) is fixedly provided with a fixed shell (24). A second slider (8) is slidably connected inside the first chute of the housing (1). On one side of the second slider (8), a connecting block (28) is fixedly provided. One end of the connecting block (28) is fixedly arranged on one side of the fixed shell (24). A first groove is provided on the side wall of the fixed handle (6). Inside the first groove of the fixed handle (6), a sixth rotating shaft (23) is fixedly provided. The outer wall of the sixth rotating shaft (23) is rotatably connected to a movable handle (7).

3. The precise positioning annulus fibrosus suturing device and its operation method according to claim 2, characterized in that: One end of the movable handle (7) is rotatably connected to a third connecting rod (31) through a fifth rotating shaft (22). The outer wall of the third connecting rod (31) is arranged inside the fixed shell (24). One end of the fixed shell (24) is fixedly provided with a chuck (25). One end of the chuck (25) is provided with a camera (26). A second groove is provided inside the chuck (25). On both sides of the chuck (25), third chutes are provided.

4. The precise positioning annulus fibrosus suture apparatus and its operation method according to claim 3, characterized in that: Inside the third chute of the chuck (25), a seventh rotating shaft (29) is slidably connected. The outer wall of the seventh rotating shaft (29) is arranged at one end of the third connecting rod (31). In the middle of the outer wall of the seventh rotating shaft (29), a fixed rod (30) is rotatably connected. One end of the fixed rod (30) is provided with a clamping block (27). Inside the clamping block (27), a torsion spring is provided. The fixed rod (30) is located inside the second groove of the chuck (25).

5. The precise positioning annulus fibrosus suturing device and its operation method according to claim 1, characterized in that: The shearing mechanism includes a first slider (2). Both sides of the first slider (2) are slidably connected inside the second chute of the housing (1). At the bottom end of the first slider (2), a fixed plate (15) is fixedly provided. At the bottom end of the fixed plate (15), a push rod (9) is provided.

6. The precise positioning annulus fibrosus suturing device and its operation method according to claim 5, characterized in that: On both sides of the fixed plate (15), sleeves (14) are provided. The outer wall of the push rod (9) is slidably connected to the inside of the sleeve (14). On the output end of the push rod (9), a second rotating shaft (16) is symmetrically arranged. The outer wall of the second rotating shaft (16) is rotatably connected to a first connecting rod (17). One end of the first connecting rod (17) is rotatably connected to a third rotating shaft (18).

7. The precise positioning annulus fibrosus suture device and its operation method according to claim 6, characterized in that: The outer wall of the third rotating shaft (18) is rotatably connected to a second connecting rod (19). One end of the second connecting rod (19) is rotatably connected to a fourth rotating shaft (20). The outer wall of the fourth rotating shaft (20) is rotatably connected to a shearing knife (21). At the bottom end of the fourth rotating shaft (20), a bearing plate (32) is provided. One end of the bearing plate (32) is fixedly arranged on one side of the housing (1).

8. The operation method of the precise positioning annulus fibrosus suturing device according to any one of claims 1-7, characterized in that, It includes the following steps: S1. Pre-operative preparation: Conduct a comprehensive disinfection treatment on the precise positioning annulus fibrosus suture device to ensure that it meets the aseptic requirements of the operation and prevent infection during the operation; S2. Puncture operation: Align the first puncture needle (4) and the second puncture needle (5) with the annulus fibrosus part to be sutured. Rotate the knob (3) to drive the first rotating shaft (10) and the gear (11) to rotate. Then, the gear (11) drives the rack (12) to move, and the movement of the rack (12) is for the puncture operation; S3. Suture operation: Operate the fixed handle (6) and the movable handle (7). One end of the movable handle (7) is rotatably connected to a third connecting rod (31) through a fifth rotating shaft (22) and will move inside the fixed housing (24). Use the chuck (25) and the clamping block (27) to clamp the suture for suturing, and the camera (26) assists in observation; S4. Shearing operation: After suture is completed, push the first slider (2) to drive the fixed plate (15) and the push rod (9) at the bottom end to move. The outer wall of the push rod (9) is slidably connected to the inside of the sleeve (14). The second rotating shaft (16) symmetrically arranged at its output end will drive the first connecting rod (17) to rotate. The first connecting rod (17) is connected to the second connecting rod (19) through the third rotating shaft (18), and the second connecting rod (19) is connected to the shearing knife (21) through the fourth rotating shaft (20). Finally, the shearing knife (21) cuts off the redundant suture under the support of the bearing plate (32).

Images