Meniscus suture system for multi-needle implantation

Abstract

The utility model provides a meniscus suture system for multi-needle implantation, relates to the technical field of medical instruments, and solves the technical problem that the push-out length cannot be controlled in the prior art. The device comprises a handle, a limiting seat, a limiting core, a movable limiting assembly, a reset piece, a puncture tube and a pushing inner core, the pushing inner core is connected with the limiting core, and a first limiting part on the limiting seat and a third limiting part on the movable limiting assembly limit the limiting core and are used for limiting the limiting core to move towards the tail end in a one-way mode. The reset piece has force for driving the movable limiting assembly to move towards the limiting base, and the moving distance of the movable limiting assembly is the length of the implant. By the adoption of the structure, stepping excitation can be achieved, the length of one implant can be pushed out by pushing the movable limiting assembly every time, and a plurality of implants can be pushed out by pushing the movable limiting assembly repeatedly.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a multi-needle implanted meniscus suturing system. Background Art

[0002] The meniscus of the knee joint cannot repair itself after rupture, and the damaged meniscus can only be sutured through knee meniscus suture surgery. A meniscus suture system is often required for suturing. The meniscus suture system is mainly composed of an inserter and an implant. For example, the existing patent document with application number 202222147321.7 discloses a meniscus repair implant tool. This tool mainly includes a hollow needle tube, a push wire core, a handle and a drive unit. The drive unit can be slidably arranged on the handle to drive the push wire core, and the implant is pushed out by the push wire core for suturing. However, in this technical solution, the pushing distance of the drive unit is the moving distance of the implant pushed by the push wire core. The structural design is unreasonable. This structure cannot control the length of only one implant pushed out at a time, and requires the operator to have rich experience to use it in coordination. Utility Model Content

[0003] The purpose of the utility model is to provide a multi-needle implanted meniscus suturing system, which solves the technical problem of the inability to control the push-out length in the prior art. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The multi-needle implanted meniscus suturing system provided by the utility model comprises a handle, a limit seat, a limit core, a movable limit assembly, a reset piece, a puncture tube and a pushing inner core, wherein an axially through installation space is arranged inside the handle, the limit seat is arranged in the installation space close to the tail end of the handle, an axial through hole is arranged inside the limit seat, a first limit portion is arranged on the limit seat, the limit core can be slidably arranged in the through hole, a plurality of second limit portions are arranged in the circumferential direction of the limit core, a part of the movable limit assembly is located outside the handle, and is used for the operator to push the movable limit assembly to move toward the head end of the handle. The movable limit assembly is movable, the moving distance of the movable limit assembly is the length of the implant, the movable limit assembly is partially located in the installation space, and a third limit portion is provided on one end of the movable limit assembly toward the limit seat, the first limit portion and the third limit portion are both used to unidirectionally limit the movement of the limit core toward the tail end, a reset member is provided between the movable limit assembly and the inner wall of the installation space, the reset member has a force to drive the movable limit assembly to move toward the limit seat, the puncture tube is provided at the head end of the handle, and the push inner core is provided to slide in the puncture tube and the movable limit assembly and is connected to the limit core.

[0006] Preferably, the limiting core has a multi-layer pagoda structure, the planar end of the limiting core faces the limiting seat, the inclined end of the limiting core is inclined toward the movable limiting assembly, the first limiting portion is a closing opening facing the direction of the movable limiting assembly, the closing opening has a notch, the third limiting portion can extend into the notch, the third limiting portion has an inclined protrusion, the inclined end of the inclined protrusion faces the limiting seat, the planar end of the inclined protrusion faces the head end of the handle, and the closing opening and the third limiting portion are both elastic structures.

[0007] Preferably, the number of the notches is two and they are symmetrically arranged on the closing opening, and the number of the third limiting portions is two and they are symmetrically arranged.

[0008] Preferably, the movable limiting assembly comprises a movable part and a push button, the movable part is arranged in the installation space, a countersunk hole is arranged on the movable part, and the push button is inserted into the countersunk hole.

[0009] Preferably, the push button includes a plug-in end and a pushing end, the plug-in end is arranged on the bottom wall of the pushing end, a U-shaped groove is also arranged on the plug-in end, the pushing inner core is inserted into the U-shaped groove, and an arc-shaped protrusion is also arranged on the bottom wall of the pushing end, and the protrusion is against the outer wall of the handle.

[0010] Preferably, it further comprises a button and a limiting sleeve, the head end of the handle is further provided with a push groove, the push groove is communicated with the installation space, the button is arranged in the push groove, the button is connected with the limiting sleeve, and the puncture tube is arranged in the limiting sleeve;

[0011] The end of the limiting sleeve away from the handle is upturned and has the same angle as the puncture tube, and the end of the limiting sleeve away from the handle is closed.

[0012] Preferably, the push groove includes a slot and an inner hole, the slot is arranged on the side wall of the handle, the button can be slidably arranged on the slot, a limiting slot is arranged on the side wall of the slot, there are multiple limiting slots and they are arranged along the axial direction of the handle, a limiting protrusion is arranged on the button, the limiting protrusion can be snapped into the limiting slot, the middle part of the button has a deformation groove, the button includes a pressed state and a released state, in the pressed state, the deformation groove contracts, the limiting protrusion escapes from the limiting groove, and the button can move along the push groove; in the released state, the deformation groove returns to its position, the limiting protrusion is located in the limiting slot, and the button is locked.

[0013] Preferably, one end of the puncture tube is fixedly connected to the handle, and the other end of the puncture tube is provided with a C-shaped groove, and scale lines are provided on the outer surface of the C-shaped groove.

[0014] Preferably, the method further comprises an implant, wherein the implant is disposed in the head end of the puncture tube.

[0015] Preferably, the implant includes a fixture and a suture, the fixture is provided with a ridge, the ridge is located in the C-shaped groove, the fixture has a threading hole, the number of the fixtures is at least two, and the suture is passed through the fixture.

[0016] This application adopts the above technical solution, which has at least the following beneficial effects:

[0017] A multi-needle implanted meniscus suturing system comprises a handle, a limit seat, a limit core, a movable limit assembly, a reset piece, a puncture tube and a pushing inner core, wherein an axially through installation space is arranged inside the handle, the limit seat is arranged in the installation space near the tail end of the handle, an axial through hole is arranged inside the limit seat, and the through hole can be used for the limit core and the pushing inner core to penetrate, a first limit portion is arranged on the limit seat, the limit core can be slidably arranged in the through hole, a plurality of second limit portions are arranged on the circumference of the limit core, a part of the movable limit assembly is located outside the handle, and is used for the operator to push the movable limit assembly to move toward the head end of the handle, the moving distance of the movable limit assembly is the length of the implant, a part of the movable limit assembly is located in the installation space, and a movable limit assembly is arranged on one end of the movable limit assembly facing the limit seat. The third limiting part, the first limiting part and the third limiting part are both used to unidirectionally limit the movement of the limiting core toward the tail end direction, so that the limiting core can only move toward the head direction of the handle, a reset part is arranged between the movable limiting assembly and the inner wall of the installation space, and the reset part has a force to drive the movable limiting assembly to move toward the limiting seat, so that the movable limiting assembly can return to its position, the puncture tube is arranged at the head end of the handle, and the pushing inner core is slidably arranged in the puncture tube and the movable limiting assembly and connected to the limiting core; adopting the above structure, the movable limiting assembly can be reciprocated to indirectly drive the limiting core and the pushing inner core to move and then push out the implant, and the moving distance of the movable limiting assembly is the length of the implant, ensuring that only one implant is pushed out each time, and with this kind of repeated pushing mechanism, the implantation of multiple implants can be achieved.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic cross-sectional structure diagram of a multi-needle implanted meniscus suturing system provided by an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of a meniscus suturing system with multiple needle implants provided in an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the handle provided by the embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the handle structure provided by an embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the limit seat provided in the embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the main structure of the limit seat provided by the embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of the top view of the limit seat provided in an embodiment of the utility model;

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the limiting core provided in an embodiment of the utility model;

[0028] Fig. 9 It is a schematic diagram of the limit core structure provided by an embodiment of the utility model;

[0029] Fig.10 It is a schematic diagram of the structure of the moving part provided by the embodiment of the utility model;

[0030] Fig.11 yes Fig.10 Schematic diagram of the AA section structure;

[0031] Fig.12 It is a schematic diagram of the side view structure of the push button provided by the embodiment of the utility model;

[0032] Fig.13 yes Fig.12 Schematic diagram of the BB cross-section structure;

[0033] Fig.14 This is a schematic diagram of the main structure of the push button provided by the embodiment of the utility model;

[0034] Fig.15 It is a schematic diagram of the side view structure of a button provided by an embodiment of the utility model;

[0035] Fig.16 yes Fig.15 Schematic diagram of the CC cross-section structure;

[0036] Fig.17 This is a schematic diagram of the main structure of a button provided by an embodiment of the utility model;

[0037] Fig.18 It is a schematic diagram of the structure of the puncture tube provided in an embodiment of the utility model;

[0038] Fig.19It is a schematic diagram of the side view structure of the fixture provided by the embodiment of the utility model;

[0039] Fig. 20 yes Fig.19 Schematic diagram of the DD cross-section structure;

[0040] Fig.21 It is a schematic diagram of the main structure of the fixture provided by the embodiment of the utility model;

[0041] Fig. 22 It is a schematic diagram of the structure of a two-needle implant provided by an embodiment of the utility model;

[0042] Fig.23 It is a schematic diagram of the structure of a three-needle implant provided by an embodiment of the utility model;

[0043] Fig.24 It is a schematic diagram of the structure of a four-needle implant provided by an embodiment of the utility model;

[0044] Fig.25 It is a schematic diagram of the structure of a five-needle implant provided in an embodiment of the utility model.

[0045] In the figure, 1, handle; 2, limit seat; 3, limit core; 4, movable limit assembly; 5, reset member; 6, puncture tube; 7, push inner core; 8, installation space; 9, through hole; 10, first limit part; 11, second limit part; 12, third limit part; 13, closing mouth; 14, notch; 15, oblique protrusion; 16, moving member; 17, push button; 18, countersunk hole; 19, plug end; 20, push end ; 21. U-shaped groove; 22. convex point; 23. button; 24. limiting sleeve; 25. push groove; 26. notch; 27. inner hole; 28. limiting groove; 29. ​​limiting convex; 30. deformation groove; 31. C-shaped groove; 32. implant; 33. fixture; 34. suture; 35. convex ridge; 36. threading hole; 37. strip hole; 38. buckle; 39. card slot; 40. card end; 41. setting groove. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0047] The specific embodiment of the utility model provides a multi-needle implanted meniscus suturing system, comprising a handle 1, a limit seat 2, a limit core 3, a movable limit assembly 4, a reset member 5, a puncture tube 6 and a push inner core 7. Figure 1 - Attachment Fig.17 , to explain each component, the head end referred to below is the end facing the patient during actual use, as shown in the attached Figure 1 The tail end is the end facing away from the patient when in use. Figure 1 The lower end of .

[0048] The outer wall of the handle 1 is provided with an anti-slip groove to facilitate the operator's grip, and the handle 1 is provided with an axially through-going installation space 8 for installing the limit seat 2, the limit core 3, the movable limit assembly 4 and the reset member 5;

[0049] The limit seat 2 is arranged in the installation space 8 near the tail end of the handle 1, and is used to limit the moving direction of the limit core 3; the limit seat 2 has an axial through hole 9, and the limit seat 2 is provided with a first limit portion 10. After the limit seat 2 is arranged on the handle 1, the limit core 3 can be inserted from the tail end of the through hole 9 and the inner core 7 can be pushed;

[0050] The limiting core 3 is slidably arranged in the through hole 9, and a plurality of second limiting portions 11 are arranged on the circumference of the limiting core 3. The first limiting portion 10 cooperates with the second limiting portion 11 to unidirectionally limit the movement of the limiting core 3 toward the tail end, so that the limiting core 3 can only move toward the head end of the handle;

[0051] A part of the movable limiting component 4 is located outside the handle 1, and is used by the operator to push the movable limiting component 4 to move toward the head end of the handle 1. The moving distance of the movable limiting component 4 is the length of the implant 32, so that one push can push out one implant 32 in actual operation, which is simple to operate, reduces the difficulty of use, and is suitable for use by more operators; a part of the movable limiting component 4 is located in the installation space 8, and a third limiting portion 12 is provided on one end of the movable limiting component 4 located in the installation space 8 toward the limiting seat 2, and the third limiting portion 12 is used to unidirectionally limit the movement of the limiting core 3 toward the tail end, so that the limiting core 3 can only move toward the head end of the handle;

[0052] A reset member 5 is arranged between the movable limit assembly 4 and the inner wall of the installation space 8. The reset member 5 has a force to drive the movable limit assembly 4 to move toward the limit seat 2. In this way, the driving force is used to ensure that the operator can return to the position after pushing the movable limit assembly 4 to release. When returning to the position, the first limit portion 10 limits the movement of the limit core 3. At this time, the third limit portion 12 does not limit the movement of the movable limit assembly 4 toward the tail end of the handle 1. When the third limit portion 12 moves to the first limit portion 10, it clamps the new second limit portion 11, and then enters the next pushing stage;

[0053] The puncture tube 6 is arranged at the head end of the handle 1 and is used for puncture;

[0054] The inner core 7 is pushed to slide inside the puncture tube 6 and the movable limiting component 4 and is connected to the limiting core 3. The limiting core 3 can move toward the head end of the handle 1 under the driving action of the movable limiting component 4, thereby pushing out the implant 32 set on the head end of the puncture tube 6.

[0055] By using the above-mentioned multi-needle implanted meniscus suturing system, step-by-step stimulation can be achieved, and each push of the movable limit assembly can push out the length of an implant, and repeated pushes can push out multiple implants.

[0056] In a specific embodiment of the present application, the second limiting portion 11 can be a convex ring arranged on the outer peripheral wall of the limiting core 3. Specifically, the limiting core 3 can be designed as a multi-layer pagoda structure. Figure 1 , 8 9. This multi-layer pagoda-shaped structure has a flat end and a sloped end. The flat end of the limit core 3 faces the limit seat 2, and the sloped end of the limit core 3 is inclined toward the movable limit component 4. In this way, the second limit portion 11 similar to the conical surface can achieve that the limit core 3 remains stationary when the third limit portion 12 moves toward the tail end of the handle 1, and can drive the limit core 3 to move toward the head end of the handle 1.

[0057] The specific first limiting portion 10 is a closing opening 13 facing the direction of the movable limiting component 4. The structural form of the closing opening 13 can make the limiting core 3 move from the limiting seat 2 toward the head end of the handle 1. The closing opening 13 can be stretched open during movement. When moving to the next plane end, the closing opening 13 is tightened to limit the movement of the limiting core 3 toward the tail end of the handle 1. In order to ensure the elasticity of the closing opening 13 and enable the third limiting portion 12 to move over and clamp the limiting core 3, a notch 14 can be set on the closing opening 13, and the third limiting portion 12 can extend into the notch 14. The third limiting portion 12 has an oblique protrusion 1 5. The inclined end of the inclined protrusion 15 faces the limiting seat 2, and the plane end of the inclined protrusion 15 faces the head end of the handle 1. The closing opening 13 and the third limiting portion 12 are both elastic structures. When the movable limiting component 4 moves toward the tail end of the handle 1, the inclined end of the inclined protrusion 15 contacts the inclined surface end of the second limiting portion 11, gradually stretching the third limiting portion 12, and continuing to move until the plane end of the inclined protrusion 15 contacts the plane end of the second limiting portion 11. At this time, the third limiting portion 12 returns to its original position and tightens, so as to limit the limiting core 3. At this time, pushing the movable limiting component 4 again can drive the limiting core 3 to move toward the head end of the handle 1.

[0058] In the specific embodiment of the present application, the notches 14 can be designed to be two and symmetrically arranged on the closing opening 13, and the third limiting parts 12 can be two and symmetrically arranged, so that the limiting core 3 can be stably clamped. Of course, the notches can also be designed to be three, four, etc., and the corresponding third limiting parts 12 can be designed to be three, four, etc.

[0059] Specifically, a buckle 38 is also provided at the tail end of the limit seat 2, and a slot 39 is correspondingly provided at the tail end of the handle 1. After the limit seat 2 is inserted into the handle 1, the buckle 38 and the slot 39 are provided on the handle 1, and the clamping connection between the limit seat 2 and the handle 1 is achieved through the clamping end 40 and the buckle 38. This clamping method is a detachable connection method, and the limit seat 2 can be disassembled by pushing the buckle 38.

[0060] Specifically, a setting groove 41 is set on the head end of the limit core 3 facing the handle 1, and the inner core 7 is pushed to pass through the setting groove 41. The setting groove 41 can be a small hole with a diameter of 1 mm. The limit core 3 is inserted into the small hole through the injection molding process and is connected to the limit core 3 as a whole.

[0061] The limiting core 3 can be designed as a cylinder with a diameter of 0.9 mm. Its specific size can be in the range of 0.5 mm-1.3 mm. A recessed groove is provided on the surface of the tail end of the limiting core 3 to increase the injection molding connection strength between the limiting core 3 and the limiting seat 2.

[0062] In another embodiment of the present application, the movable limit assembly 4 includes a movable member 16 and a push button 17, as shown in the attached Fig.10 and attached Fig.11 As shown, the moving member 16 is arranged in the installation space 8, and the moving member 16 can slide relative to the installation space 8. The moving member 16 is provided with a countersunk hole 18, and the push button 17 is inserted in the countersunk hole 18. A bar hole 37 is also provided on the handle 1, and the push button 17 is inserted through the bar hole 37 and connected with the countersunk hole 18. The push button 17 and the countersunk hole 18 are connected by interference fit. When the push button 17 is pushed, the moving member 16 can be driven to move toward the head end of the handle 1.

[0063] In the specific embodiment of the present application, the push button 17 includes a plug-in end 19 and a pushing end 20. The plug-in end 19 is arranged on the bottom wall of the pushing end 20. A U-shaped groove 21 is also arranged on the plug-in end 19. The pushing inner core 7 is inserted into the U-shaped groove 21. The setting of the U-shaped groove 21 can avoid contact between the pushing inner core 7 when the push button 17 is pushed. The bottom wall of the pushing end 20 is also provided with an arc-shaped convex point 22. The convex point 22 is against the outer wall of the handle 1. By setting the convex point 22, the contact area with the handle 1 is reduced, and the friction is reduced. Secondly, the end of the push button 17 facing the head end of the handle 1 can be designed to be tilted, and anti-slip grooves can be set on the upper surface of the push button 17 to increase the friction between the finger and the push button 17, so as to facilitate the operator to push.

[0064] Combined with Figure 1 As shown, the reset member 5 can be a compression type, such as a spring, one end of which is sleeved on the connecting head of the moving member 16 facing the head end of the handle 1, and the other end is pressed against the hole on the inner wall of the installation space 8.

[0065] The specific embodiment of the present application also includes a button 23 and a limiting sleeve 24. A push groove 25 is also provided at the head end of the handle 1. The push groove 25 is connected to the installation space 8. The button 23 is arranged in the push groove 25. The button 23 can be pushed by the operator to move in the push groove 25. The button 23 is connected to the limiting sleeve 24, and the puncture tube 6 is arranged in the limiting sleeve 24. The button 23 is provided with a convex tube in the direction toward the head end of the handle 1, and the convex tube and the limiting sleeve 24 are connected by a tight fit, for example, an interference fit connection method is adopted.

[0066] In the present application, the end of the limiting sleeve 24 away from the handle 1 is upturned and has the same angle as the puncture tube 6. The end of the limiting sleeve 24 away from the handle 1 is closed to protect the implant 32. The limiting sleeve 24 is made of a PC plastic thin tube.

[0067] Specifically, the push groove 25 includes a slot 26 and an inner hole 27. Figure 3 and attached Figure 4 The slot 26 is provided on the side wall of the handle 1 and is located at the head end of the handle 1. The button 23 is slidably provided on the slot 26. The side wall of the slot 26 is provided with a limit slot 28. There are multiple limit slots 28 and they are arranged along the axial direction of the handle 1. The limit slot 28 is also provided with a scale, which can be 18mm, 15mm, 12mm, 9mm, for marking the front and rear positions of the button. As shown in the attached figure Figure 15-17 As shown in , the button 23 is provided with a limiting protrusion 29, which can be snapped into the limiting groove 28. The middle part of the button 23 has a deformation groove 30. By providing the deformation groove 30 and the button 23 adopting an elastic plastic material, the button 23 can be deformed downward by pressing the top of the button 23; the button 23 includes a pressed state and a released state; in the pressed state, the deformation groove 30 shrinks, the limiting protrusion 29 escapes from the limiting groove 28, and the button 23 can move along the push groove 25; in the released state, the deformation groove 30 returns to its original position, the limiting protrusion 29 is located in the limiting groove 28, and the button 23 is locked. An undercut is also provided at the bottom of the button 23, which mainly serves to stabilize the button 23 and prevent the button 23 from tilting too much when over-pressed.

[0068] In a specific embodiment, one end of the puncture tube 6 is fixedly connected to the handle 1, and a C-shaped groove 31 is provided on the other end of the puncture tube 6. A scale line is provided on the outer surface of the C-shaped groove 31 to indicate the insertion depth of the puncture tube. The implant 32 is installed in the C-shaped groove 31 by a tight fit. Sinking grooves are provided on both sides of the end of the puncture tube 6 connected to the handle 1. During processing, the sinking grooves are connected to the handle 1 as a whole through injection molding. The sinking grooves serve to increase the connection strength between the puncture tube and the handle 1.

[0069] The multi-needle implanted meniscus suturing system in the present application includes, in addition to the above-mentioned structure for puncture, an implant 32 , which is disposed in the head end of the puncture tube 6 .

[0070] In the specific embodiment of the present application, the implant 32 includes a fixing member 33 and a suture 34. Fig.19 - Attachment Fig.21 As shown, the fixture 33 is a columnar structure, and a ridge 35 is provided on the fixture 33, and the ridge 35 is located in the C-shaped groove 31. The ridge 35 and the C-shaped groove 31 cooperate to achieve a guiding effect to prevent the fixture from rotating. The fixture 33 has a threading hole 36, and there can be two threading holes 36. The suture 34 passes through the two threading holes 36 in sequence. The number of fixtures 33 is at least two, and the suture 34 is inserted into the fixture 33. The suture 34 can be a conventional suture made of ultra-high molecular weight polyethylene material.

[0071] The implant 32 may be in the form of Fig. 22 - Attachment Fig.25 The two needles, three needles, four needles, five needles, etc. shown in the figure, the implant set in the puncture tube 6 can be one of the above-mentioned implants 32, or any two of the above-mentioned implants 32, such as one two-needle and one three-needle, two three-needles, one four-needle, one two-needle and one four-needle, etc. It can also be any three of the above-mentioned implants 32. For this reason, the pushing inner core 7 can be designed to have different lengths according to actual conditions, and the number of the second limiting parts 11 on the pushing inner core 7 of different lengths is also different, which can be selected according to actual needs.

[0072] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0073] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A multi-needle implanted meniscus suturing system, characterized in that: The invention comprises a handle, a limit seat, a limit core, a movable limit assembly, a reset part, a puncture tube and a pushing inner core, wherein an axially through installation space is arranged inside the handle, the limit seat is arranged in the installation space near the tail end of the handle, an axial through hole is arranged inside the limit seat, a first limit portion is arranged on the limit seat, the limit core is slidably arranged in the through hole, a plurality of second limit portions are arranged in the circumferential direction of the limit core, a part of the movable limit assembly is located outside the handle, and is used for the operator to push the movable limit assembly to move toward the head end of the handle, and the movable limit assembly The moving distance is the length of the implant, a part of the movable limiting assembly is located in the installation space, and a third limiting portion is provided on one end of the movable limiting assembly facing the limiting seat, the first limiting portion and the third limiting portion are both used to unidirectionally limit the movement of the limiting core toward the tail end, a reset member is provided between the movable limiting assembly and the inner wall of the installation space, the reset member has a force to drive the movable limiting assembly to move toward the limiting seat, the puncture tube is provided at the head end of the handle, and the inner core is pushed to slide and is provided in the puncture tube and the movable limiting assembly and is connected to the limiting core.

2. The multi-needle implanted meniscus suturing system according to claim 1, characterized in that: The limiting core is a multi-layer pagoda-shaped structure, with the planar end of the limiting core facing the limiting seat, and the inclined end of the limiting core tilted toward the movable limiting assembly. The first limiting portion is a closing opening facing the movable limiting assembly, and the closing opening has a notch. The third limiting portion can extend into the notch, and the third limiting portion has an inclined protrusion, and the inclined end of the inclined protrusion faces the limiting seat, and the planar end of the inclined protrusion faces the head end of the handle. The closing opening and the third limiting portion are both elastic structures.

3. The multi-needle implanted meniscus suturing system according to claim 2, characterized in that: There are two notches symmetrically arranged on the closing opening, and there are two third limiting parts symmetrically arranged.

4. The multi-needle implanted meniscus suturing system according to claim 1, characterized in that: The movable limiting assembly comprises a movable part and a push button. The movable part is arranged in the installation space. A countersunk hole is arranged on the movable part. The push button is inserted into the countersunk hole.

5. The multi-needle implanted meniscus suturing system according to claim 4, characterized in that: The push button includes a plug-in end and a pushing end, the plug-in end is arranged on the bottom wall of the pushing end, a U-shaped groove is also arranged on the plug-in end, the pushing inner core is inserted into the U-shaped groove, and an arc-shaped protrusion is also arranged on the bottom wall of the pushing end, and the protrusion is against the outer wall of the handle.

6. The multi-needle implanted meniscus suturing system according to claim 1, characterized in that: It also includes a button and a limiting sleeve, the head end of the handle is further provided with a push groove, the push groove is communicated with the installation space, the button is arranged in the push groove, the button is connected with the limiting sleeve, and the puncture tube is arranged in the limiting sleeve; The end of the limiting sleeve away from the handle is upturned and has the same angle as the puncture tube, and the end of the limiting sleeve away from the handle is closed.

7. The multi-needle implanted meniscus suturing system according to claim 6, characterized in that: The push groove includes a slot and an inner hole, the slot is arranged on the side wall of the handle, the button can be slidably arranged on the slot, a limiting slot is arranged on the side wall of the slot, there are multiple limiting slots and they are arranged along the axial direction of the handle, a limiting protrusion is arranged on the button, the limiting protrusion can be snapped into the limiting slot, a deformation groove is provided in the middle of the button, the button includes a pressed state and a released state, in the pressed state, the deformation groove contracts, the limiting protrusion escapes from the limiting groove, and the button can move along the push groove; in the released state, the deformation groove returns to its position, the limiting protrusion is located in the limiting slot, and the button is locked.

8. The multi-needle implanted meniscus suturing system according to claim 1, characterized in that: One end of the puncture tube is fixedly connected to the handle, and the other end of the puncture tube is provided with a C-shaped groove, and scale lines are provided on the outer surface of the C-shaped groove.

9. The multi-needle implanted meniscus suturing system according to claim 8, characterized in that: Also included is an implant, which is disposed in the head end of the puncture tube.

10. The multi-needle implanted meniscus suturing system according to claim 9, characterized in that: The implant includes a fixture and a suture. The fixture is provided with a ridge, the ridge is located in the C-shaped groove, the fixture has a threading hole, the number of the fixtures is at least two, and the suture is passed through the fixture.

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