Meniscus repair device

Abstract

The application discloses a kind of meniscus repair devices, it is related to medical instrument technical field, including fixed shell, puncture tube, first implant, second implant and firing assembly;The puncture end of puncture tube is away from the one end of fixed shell;First implant is set in puncture tube and is close to puncture end;Second implant is movably connected in puncture tube, is placed in the side of first implant close to fixed shell, and suture is connected between first implant and second implant;Pushing rod is movably arranged in puncture tube, one end of pushing rod is drivingly connected with firing assembly, and the other end of pushing rod is pushing end, and in unfired state, pushing end is placed between first implant and second implant;Firing assembly can drive pushing rod to reciprocate in puncture tube, so that pushing end can be connected with first implant or second implant in sequence and be fired.The meniscus repair device provided in the application improves surgical efficiency and reduces the probability of unnecessary damage to patients.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a meniscus repair device. Background Technology

[0002] Meniscal repair is the most common surgical procedure for treating meniscal injuries. Existing meniscal repair techniques commonly involve manual suturing with double needles, which is inefficient, time-consuming, and requires a high level of skill from the surgeon. Therefore, existing techniques can use multi-shot repair instruments to repair meniscal injuries by sequentially inserting multiple implants into the meniscus and connecting them with sutures to tighten the meniscus. However, existing multi-shot repair instruments use a method of changing firing tracks to fire and insert different implants. During use, there is a high risk of failure during the replacement (track change) and failure of the second firing, which adversely affects the intraoperative operation (if the second replacement fails, the implant fired in the first firing must be removed), causing unnecessary damage to the patient and affecting the efficiency of the operation. Summary of the Invention

[0003] The purpose of this invention is to provide a meniscus repair device to solve the problems existing in the prior art, improve surgical efficiency, and reduce the probability of unnecessary damage to patients.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a meniscus repair device, comprising a fixation shell, a puncture tube, a first implant, a second implant, and a firing assembly; the puncture tube is connected to the fixation shell, with one end of the puncture tube facing away from the fixation shell being the puncture end, and the puncture end being open; the first implant is movably disposed within the puncture tube and close to the puncture end; the second implant is movably connected to the puncture tube and positioned on the side of the first implant close to the fixation shell, and a suture connects the first implant and the second implant; the firing assembly is disposed on the fixation shell, and a push rod is movably disposed within the puncture tube, one end of the push rod being drively connected to the firing assembly, and the other end of the push rod being the pushing end. In the non-firing state, the push rod is fixed in position within the puncture tube, and the pushing end is positioned between the first implant and the second implant; the firing assembly can drive the push rod to reciprocate within the puncture tube, so that the pushing end can sequentially connect with the first implant or the second implant and fire.

[0006] Preferably, the puncture tube has an axially extending groove on its wall near the puncture end. The groove penetrates the wall of the puncture tube along its thickness direction, and one end of the groove extends to the puncture end. The second implant is slidably connected to the groove, and a channel for the push rod to pass through is provided between the side end of the second implant that extends into the puncture tube and the inner wall of the puncture tube. In the second firing state, the firing assembly can drive the push end to return through the channel to the side of the second implant near the fixing shell, and the second implant slides along the groove under the push of the push end and can detach from the puncture end.

[0007] Preferably, the portion of the push rod that slides within the channel is provided with a clearance groove on the outer wall of the second implant. When the push rod slides within the channel, the clearance groove is used to avoid the portion of the second implant that extends into the puncture tube. Furthermore, when the push end returns through the channel, the side end of the second implant that extends into the puncture tube can abut and push the push end, causing the push rod to undergo elastic deformation within the puncture tube. This allows the push end to return to its original position and connect with the end of the second implant after returning and disengaging from the abutment with the second implant.

[0008] Preferably, the firing assembly includes a trigger, a limiting component, and a reset component; the trigger is rotatably connected to the fixed housing, and the trigger has a transmission part extending into the fixed housing and an operating part extending out of the fixed housing; the transmission part is operatively connected to the push rod, and the reset component is connected to the transmission part and the fixed housing; the limiting component is disposed within the fixed housing and can limit and fix the relative position of the trigger and the fixed housing in the unfired state; in the first firing state, by applying a force to the operating part, the trigger is rotated relative to the fixed housing, and the transmission part is operatively connected to the push rod. The moving part can drive the push rod to push the first implant outward within the puncture tube and cause the reset component to undergo elastic deformation, and the trigger can disengage from the limiting component; in the second firing state, the transmission part can drive the fixed shell to rotate in the opposite direction under the restoring force of the reset component, so as to drive the push rod to slide inward within the puncture tube, so that the push end is placed on the side of the second implant close to the fixed shell. By repeatedly applying force to the operating part, the push rod can push the second implant outward within the puncture tube.

[0009] Preferably, the limiting component includes a limiting plate and an elastic component. The limiting plate is rotatably disposed within the fixed housing, and a limiting rod is provided on the portion of the trigger located within the fixed housing. In the unfired state, the limiting plate, in its initial position, can be connected to the limiting rod under the elastic force of the elastic component to fix the relative position of the trigger and the fixed housing. In the first firing state, by applying a force to the operating part, the trigger rotates relative to the fixed housing, allowing the limiting rod to disengage from the limiting plate, and the limiting plate to disengage from its initial position under the elastic force of the elastic component.

[0010] Preferably, it further includes a puncture limiting tube, which is connected to the fixing shell and sleeved on the outside of the puncture tube; the end of the puncture limiting tube opposite to the fixing shell is a limiting end, and the puncture end extends out of the limiting end; the limiting end is used to limit the puncture depth of the puncture end; and in the unfired state, the limiting end can be pressed against the outside of the second implant.

[0011] Preferably, it further includes a depth adjustment component, which is disposed on the fixed shell and connected to the puncture limiting tube. The depth adjustment component can drive the puncture limiting tube to move outside the puncture tube to adjust the distance between the limiting end and the puncture end.

[0012] Preferably, the depth adjustment assembly includes a cannula and an adjustment handle. The cannula is fixedly sleeved outside the puncture limiting tube and slidably connected to the fixed shell. The fixed shell is provided with a movable groove. One end of the adjustment handle extends into the fixed shell and is fixedly connected to the cannula. The other end of the adjustment handle extends out of the fixed shell through the movable groove and is slidable relative to the fixed shell. The fixed shell is provided with multiple fixed positions along the movement direction of the adjustment handle. The adjustment handle can be connected to different fixed positions to adjust and fix the movement distance of the puncture limiting tube relative to the puncture tube.

[0013] Preferably, the cannula can extend out of the fixed shell during the movement of the puncture limiting tube; both the portion of the cannula that extends out of the fixed shell and the portion of the puncture tube that extends out of the puncture limiting tube are provided with graduations along their length.

[0014] Preferably, both the first implant and the second implant have an abutment groove at one end near the fixing shell that can abut against the pushing end; both the first implant and the second implant have two thread holes, the suture is sequentially passed through the thread holes on the first implant and the second implant, and a loop is formed on the portion of the suture connected between the second implant and the first implant, and the suture passing through the second implant along the threading direction can pass through the loop.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] The meniscus repair device provided by this invention is supported by a fixed shell. During the repair process, the puncture end can be inserted into the meniscus to be repaired. During the first firing, the firing component drives the push rod to move outward in the puncture tube, so that the push end connects with the first implant and can push the first implant out through the puncture end, completing the firing of the first implant. During the second firing, the firing component can drive the push rod to return inward in the puncture tube, and place the push end on the side of the second implant close to the fixed shell. The firing component can also drive the push rod to move outward in the puncture tube, so that the push end connects with the second implant and can push the second implant out through the puncture end, realizing the firing of the second implant. In the unfired state, the push end is placed between the first and second implants. Simply driving the push rod to move in the puncture tube can realize the sequential pushing and firing of the first and second implants without changing the firing track, reducing the probability of firing failure of the second implant, improving surgical efficiency, and reducing the probability of unnecessary damage to the patient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the meniscus repair device provided in Example 1;

[0019] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0020] Figure 3 for Figure 1 Schematic diagram of the cross section at point BB;

[0021] Figure 4A front view schematic diagram of the engagement of the depth adjustment component and the puncture limiting tube provided in Embodiment 1;

[0022] Figure 5 A top view schematic diagram of the engagement of the depth adjustment component and the puncture limiting tube provided in Embodiment 1;

[0023] Figure 6 This is a partial schematic diagram showing the fixed fit between the depth adjustment component and the fixed shell provided in Embodiment 1;

[0024] Figure 7 This is a partial schematic diagram showing the disengagement of the depth adjustment component and the fixed shell provided in Embodiment 1.

[0025] Figure 8 This is a schematic diagram of the structure of the first implant provided in Example 1;

[0026] Figure 9 This is a schematic diagram of the structure of the second implant provided in Example 1;

[0027] Figure 10 This is a schematic diagram of the first and second implants and the sutures provided in Example 1.

[0028] In the diagram: 1-Fixed shell; 11-Modible groove; 12-Fixed position; 13-Guide groove; 2-Puncture tube; 21-Puncture end; 22-Channel; 3-First implant; 4-Second implant; 41-Guide side; 5-Suture; 51-Wrapping ring; 52-Threading hole; 6-Firing assembly; 61-Trigger; 611-Transmission part; 612-Operating part; 613-Limiting rod; 614-Transmission seat; 62-Limiting component; 621-Limiting plate; 622-Elastic component; 623-Limiting post; 63-Reset component; 7-Push rod; 71-Pushing end; 72-Avoiding groove; 73-Abutting groove; 8-Puncture limiting tube; 81-Limiting end; 9-Depth adjustment assembly; 91-Cannula; 92-Adjusting handle; 93-Scale; 94-Adjusting post. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] The purpose of this invention is to provide a meniscus repair device to solve the problems existing in the prior art, improve surgical efficiency, and reduce the probability of unnecessary damage to patients.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] This embodiment provides a meniscus repair device; please refer to [link / reference]. Figures 1-10 The device includes a fixed shell 1, a puncture tube 2, a first implant 3, a second implant 4, and a firing assembly 6. The puncture tube 2 is connected to the fixed shell 1, and the end of the puncture tube 2 facing away from the fixed shell 1 is a puncture end 21 with an opening. The first implant 3 is movably disposed inside the puncture tube 2 and close to the puncture end 21. The second implant 4 is movably connected to the puncture tube 2 and is placed on the side of the first implant 3 close to the fixed shell 1. A suture 5 connects the first implant 3 and the second implant 4. The firing assembly 6 is disposed on the fixed shell 1. A push rod 7 is movably disposed inside the puncture tube 2. One end of the push rod 7 is connected to the firing assembly 6, and the other end of the push rod 7 is a push end 71. In the non-firing state, the push rod 7 is fixed in position inside the puncture tube 2, and the push end 71 is placed between the first implant 3 and the second implant 4. The firing assembly 6 can drive the push rod 7 to reciprocate inside the puncture tube 2 so that the push end 71 can be connected to the first implant 3 or the second implant 4 in sequence and fired.

[0034] The entire assembly is supported by a fixed shell 1. During the repair process, the puncture end 21 can penetrate the meniscus to be repaired. During the first firing, the firing assembly 6 drives the push rod 7 to move outward within the puncture tube 2, connecting the push end 71 with the first implant 3 and allowing the first implant 3 to be pushed out through the puncture end 21, thus firing the first implant 3. During the second firing, the firing assembly 6 drives the push rod 7 to return inward within the puncture tube 2, placing the push end 71 on the side of the second implant 4 near the fixed shell 1. The firing assembly 6 also drives the push rod 7 to move outward within the puncture tube 2, connecting the push end 71 with the second implant 4 and allowing the second implant 4 to be pushed out through the puncture end 21, thus firing the second implant 4. Figure 1 and Figure 2 As shown, in the unfired state, the push end 71 is placed between the first implant 3 and the second implant 4. Simply driving the push rod 7 to move within the puncture tube 2 is enough to sequentially push and fire the first implant 3 and the second implant 4 without changing the firing track. This reduces the probability of the second implant 4 failing to fire, improves surgical efficiency, and reduces the probability of unnecessary damage to the patient.

[0035] The fixed shell 1 is set as a handle for easy hand operation; the puncture end 21 is set as a tip for easy puncture operation.

[0036] In the optional embodiment, more preferably, the puncture tube 2 has an axially extending groove (not shown in the figure) on the tube wall near the puncture end 21. The groove penetrates the tube wall of the puncture tube 2 along the thickness direction, and one end of the groove extends to the puncture end 21. The second implant 4 is slidably connected to the groove. The side end of the second implant 4 that extends into the puncture tube 2 has a channel 22 between it and the inner wall of the puncture tube 2 for the push rod 7 to pass through. In the second firing state, the firing assembly 6 can drive the push end 71 to return through the channel 22 to the side of the second implant 4 near the fixed shell 1. Under the push of the push end 71, the second implant 4 slides along the groove and can detach from the puncture end 21.

[0037] Specifically, by providing a groove extending to the puncture end 21 near the puncture tube 2, the second implant 4 can be slidably embedded in the groove and can be pushed away from the puncture tube 2 by the push rod 7 to achieve the firing of the second implant 4. The lower end of the second implant 4 extending into the puncture tube 2 can leave a channel 22 between it and the inner wall of the puncture tube 2 for the push rod 7 to pass through. In addition, by setting the side of the second implant 4 near the puncture end 21 as a guide side 41, and the guide side 41 as a guide bevel, during the second firing process, when the puncture end 21 punctures the meniscus and the push rod 7 pushes the second implant 4 out of the groove, the guide side 41 can play a guiding role, so that the second implant 4 can smoothly pass through the meniscus and detach from the puncture end 21 to complete the firing.

[0038] In addition, please see Figure 3 The areas on both sides of the second implant 4 that mate with the edges of the slide groove are provided with inner grooves, and the edges of the slide groove can be inserted into the inner grooves to ensure that the second implant 4 can be stably connected to the slide groove when it is not fired; and the width of the part of the second implant 4 that extends into the puncture tube 2 is greater than the width of the slide groove, also to ensure that the second implant 4 can be stably connected to the slide groove when it is not fired.

[0039] In the optional embodiment, more preferably, the portion of the push rod 7 that slides within the channel 22 is provided with a clearance groove 72 on the outer wall near the second implant 4. When the push rod 7 slides within the channel 22, the clearance groove 72 is used to avoid the portion of the second implant 4 that extends into the puncture tube 2. Furthermore, when the push end 71 returns through the channel 22, the side end of the second implant 4 that extends into the puncture tube 2 can abut and push the push end 71, causing the push rod 7 to undergo a slight elastic deformation along the radial direction of the puncture tube 2 within the puncture tube 2, allowing the push end 71 to pass smoothly through the channel 22. After the push end 71 returns and disengages from the second implant 4, the push end 71 can return to its original position using its own toughness, so that it can connect with the end of the second implant 4. Specifically, the push rod 7 is made of medical stainless steel and has a certain degree of flexibility, allowing the push end 71 to undergo a slight elastic displacement along the radial direction of the puncture tube 2 under the abutment and pushing pressure of the second implant 4 when it returns through the channel 22.

[0040] The clearance groove 72 is designed to prevent the push rod 7 from interfering with the second implant 4 during the first firing, thus avoiding affecting the position of the second implant 4 and causing firing failure. The clearance groove 72 can be configured as a concave arc-shaped groove. Figure 2 In the middle, the height of the pushing end 71 exceeds the height of the lower end of the second implant 4, and the clearance groove 72 extends smoothly to the pushing end 71 on one side. In this way, during the return stroke of the pushing rod 7, the lower end of the second implant 4 can abut and push the pushing end 71, so that the pushing end 71 undergoes radial elastic displacement in the puncture tube 2. After the pushing end 71 returns and disengages from the second implant 4, the pushing end 71 can return to its original position so that it can be connected to the end of the second implant 4.

[0041] In the optional embodiment, more preferably, the firing assembly 6 includes a trigger 61, a limiting component 62, and a reset component 63; the trigger 61 is rotatably connected to the fixed housing 1 via a pin, and the trigger 61 has a transmission part 611 extending into the fixed housing 1 and an operating part 612 extending out of the fixed housing 1; the transmission part 611 is tractively connected to the push rod 7, and the reset component 63 is connected to the transmission part 611 and the fixed housing 1; the limiting component 62 is disposed in the fixed housing 1 and can limit and fix the relative position of the trigger 61 and the fixed housing 1 in the unfired state.

[0042] In the first firing state, by applying force to the operating part 612, the trigger 61 rotates relative to the fixed shell 1. The transmission part 611 can drive the push rod 7 to push the first implant 3 outward within the puncture tube 2, and cause the reset part 63 to elastically deform. The trigger 61 can disengage from the limiting part 62 and will not limit the trigger 61 during the return stroke of the push rod 7. In the second firing state, the transmission part 611 can drive the fixed shell 1 to rotate in the opposite direction under the restoring force of the reset part 63, thereby driving the push rod. 7. The push rod 7 slides inward within the puncture tube 2 so that the push end 71 is positioned on the side of the second implant 4 near the fixation shell 1. By repeatedly applying force to the operating part 612, the push rod 7 can push the second implant 4 outward within the puncture tube 2. In order for the push end 71 to pass through the channel 22 and be positioned on the side of the second implant 4 near the fixation shell 1 during the return stroke, the reset part 63 can have a pre-tightening force, so that after the first firing is completed, there is sufficient restoring force to allow the push end 71 to pass through the channel 22.

[0043] The reset component 63 can be configured as a tension spring. A guide groove 13 is provided inside the fixed housing 1. The reset component 63 is located on the side of the transmission part 611 away from the push rod 7. The reset component 63 is always in a stretched state. One end is fixedly connected to the inner wall of the fixed housing 1, and the other end is fixedly connected to the transmission part 611. The end of the puncture tube 2 that extends into the fixed housing 1 can be coaxially fixedly connected and communicated with the inner wall of the guide groove 13 through an injection molding joint. If the injection molding joint is provided with a through hole, the through hole is tightly engaged with the puncture tube 2, and the push rod 7 can pass through the through hole. The hole passes through the injection joint; further, the transmission part 611 can be slidably connected to a transmission seat 614, the transmission seat 614 is slidably connected to the guide groove 13 along the guide groove 13 axially, the transmission seat 614 is fixedly connected to one end of the push rod 7, and the part of the transmission seat 614 located outside the guide groove 13 is fixedly connected to the reset component 63. During the rotation of the trigger 61, the transmission part 611 can slide in the transmission seat 614 and push the transmission seat 614 to slide relative to the guide groove 13, thereby realizing the drive of the push rod 7.

[0044] In the optional embodiment, more preferably, the limiting component 62 includes a limiting plate 621 and an elastic component 622. The limiting plate 621 is rotatably disposed within the fixed housing 1, and a limiting rod 613 is provided on the portion of the trigger 61 located within the fixed housing 1. In the unfired state, the limiting plate 621, in its initial position, can be connected to the limiting rod 613 under the elastic force of the elastic component 622 to fix the relative position of the trigger 61 and the fixed housing 1. In the first firing state, by applying a force to the operating part 612, the trigger 61 is rotated relative to the fixed housing 1, and the limiting rod 613 can disengage from the limiting plate 621, and the limiting plate 621 can disengage from its initial position under the elastic force of the elastic component 622.

[0045] One end of the limiting plate 621 is rotatably connected to the inner wall of the fixed shell 1 via a pin, and the elastic component 622 is a torsion spring in a pre-tightened state, connected at the rotatable connection between the limiting plate 621 and the fixed shell 1. Figure 1 In the initial firing state, the trigger 61 can rotate clockwise, allowing the limiting rod 613 on the trigger 61 to disengage from the limiting plate 621 along the arc surface at the front end of the limiting plate 621. The preload of the elastic member 622 causes the limiting plate 621 to rotate clockwise. When the limiting rod 613 disengages from the limiting plate 621, the limiting plate 613 can also release its restriction on the limiting plate 621, allowing the limiting plate 621 to rotate clockwise under the restoring force of the elastic member 622 to move away from its initial position. This allows the trigger 61 to return to its limit position without being restricted by the limiting plate 621 when rotating counterclockwise. In addition, to ensure overall stability in the unfired state, a limiting post 623 is provided on the side of the limiting plate 621 away from the limiting rod 613. The limiting post 623 is fixedly connected to the inner wall of the fixed shell 1 and can limit the counterclockwise rotation of the limiting plate 621, so as to avoid excessive preload of the reset component 63, which would cause the limiting plate 621 to rotate counterclockwise and affect the subsequent firing operation.

[0046] In the optional scheme of this embodiment, more preferably, the meniscus repair device provided in this embodiment further includes a puncture limiting tube 8, which is connected to the fixing shell 1 and sleeved outside the puncture tube 2; the end of the puncture limiting tube 8 away from the fixing shell 1 is a limiting end 81, and the puncture end 21 extends out of the limiting end 81; the limiting end 81 is used to limit the puncture depth of the puncture end 21; and in the unfired state, the limiting end 81 can be pressed against the outside of the second implant 4.

[0047] The puncture limiting tube 8 restricts the puncture depth of the puncture tube 2. During puncture, the limiting end 81 abuts against human tissue to limit the puncture depth of the puncture end 21. Furthermore, by pressing the limiting end 81 against one end of the second implant 4, the positional stability of the second implant 4 is improved, preventing the second implant 4 from detaching from the puncture tube 2 when it abuts against the pushing end 71 during its return stroke, and during the firing of the first implant 3. Specifically, the puncture limiting tube 8 is made of medical plastic, and one end of the second implant 4 has a protrusion. The inner diameter of the limiting end 81 is smaller than the outer diameter of the protrusion at one end of the second implant 4. The protruding end of the second implant 4 can extend into and abut against the inner wall of the limiting end 81, so that the protrusion and the inner wall of the limiting end 81 fit tightly together, thereby further fixing the second implant 4 in the unfired state.

[0048] In the optional scheme of this embodiment, more preferably, the meniscus repair device provided in this embodiment further includes a depth adjustment component 9. The depth adjustment component 9 is disposed on the fixed shell 1 and connected to the puncture limiting tube 8. The depth adjustment component 9 can drive the puncture limiting tube 8 to move outside the puncture tube 2 to adjust the distance between the limiting end 81 and the puncture end 21.

[0049] The depth adjustment component 9 can adjust the distance between the limiting end 81 and the puncture end 21, thereby adjusting the puncture depth of the puncture end 21 and improving puncture flexibility.

[0050] In the optional solutions of this embodiment, a more preferred option is described in the following description: Figures 4-7 The depth adjustment component 9 includes a sleeve 91 and an adjustment handle 92. The sleeve 91 is fixedly sleeved outside the puncture limiting tube 8 and is slidably connected to the fixed shell 1. The fixed shell 1 is provided with a movable groove 11. One end of the adjustment handle 92 extends into the fixed shell 1 and is fixedly connected to the sleeve 91. The other end of the adjustment handle 92 extends out of the fixed shell 1 through the movable groove 11 and can slide relative to the fixed shell 1. The fixed shell 1 is provided with multiple fixed positions 12 along the movement direction of the adjustment handle 92. The adjustment handle 92 can be connected to different fixed positions 12 to adjust and fix the movement distance of the puncture limiting tube 8 relative to the puncture tube 2.

[0051] The cannula 91 can be tightly fitted onto the outside of the puncture limiting tube 8. The fixed shell 1 is provided with a through hole that allows the cannula 91 to slide through and is coaxial. The adjusting handle 92 extends out of the fixed shell 1 through the movable groove 11 to facilitate adjustment operations, so as to drive the puncture limiting tube 8 to move outside the puncture tube 2 to adjust the puncture depth. In addition, the multiple fixed positions 12 on the fixed shell 1 facilitate the fixing of the adjusting handle 92 with the fixed shell 1 at different adjustment positions, avoiding unnecessary movement of the puncture limiting tube 8.

[0052] Specifically, the fixed position 12 can be configured as multiple connecting grooves distributed parallel to the adjustment direction, and can be located on the inner wall of the fixed shell 1 near the side edge of the movable groove 11. Correspondingly, the adjusting handle 92 is provided with a protruding adjusting post 94. The button part of the adjusting handle 92 extends out of the movable groove 11, and the rest of the adjusting handle 92 is still placed inside the fixed shell 1. Therefore, the adjusting post 94 can be set on the part of the adjusting handle 92 placed inside the fixed shell 1 so as to cooperate with the fixed position 12. When it is necessary to adjust the position of the puncture limiting tube 8, the button part of the adjusting handle 92 extending out of the movable groove 11 needs to be pressed to make the adjusting handle 92 deform slightly so that the adjusting post 94 can be disengaged from the connecting groove so that the adjusting handle 92 can slide. After the pressure on the adjusting handle 92 is removed, the adjusting handle 92 can return to its original position so that the adjusting post 94 can re-insert into the corresponding connecting groove for fixation. The adjusting handle 92 can be made of plastic material, which has a certain toughness and can undergo slight deformation.

[0053] In the optional scheme of this embodiment, more preferably, the sleeve 91 can extend out of the fixed shell 1 during the process of driving the puncture limiting tube 8 to move; the sleeve 91 at least the part that can extend out of the fixed shell 1 and the puncture tube 2 at least the part that can extend out of the puncture limiting tube 8 are both provided with scales 93 along the length direction.

[0054] The cannula 91, extending out of the fixing shell 1, and the puncture tube 2, extending out of the puncture limiting tube 8, are both provided with graduations 93 along their length. The graduations 93 on the cannula 91 extend to the end, and correspondingly, the graduations 93 on the puncture tube 2 extend to the puncture end 21. The graduations 93 on the cannula 91 and 91 on the puncture tube 2 are uniformly aligned, facilitating observation of the puncture depth by medical personnel. Furthermore, the graduations on the outside of the cannula 91 can be corresponding to multiple fixed positions 12. Correspondingly, it facilitates precise adjustment; the scale value on the cannula 91 increases sequentially along the direction closer to the puncture end 21, and can be used as an indicator side by extending the cannula 91 out of the outer side of the fixed shell 1. As the cannula 91 extends outward, the indicator scale becomes smaller and the corresponding puncture depth decreases; the scale value outside the puncture tube 2 gradually decreases along the direction closer to the puncture end 21, and can be used as an indicator end by the limiting end 81 of the puncture limiting tube 8. As the puncture limiting tube 8 gradually approaches the puncture end 21, the indicator scale becomes smaller and the corresponding puncture depth decreases.

[0055] In the optional solutions of this embodiment, a more preferred option is described in the following description: Figure 8 and Figure 9 The first implant 3 and the second implant 4 are each provided with an abutment groove 73 that can abut against the push end 71 at the end near the fixing shell 1; the first implant 3 and the second implant 4 are each provided with two thread holes 52, and the suture 5 is sequentially passed through the thread holes 52 on the first implant 3 and the second implant 4, and a suture loop 51 is formed on the part of the suture 5 that connects the second implant 4 and the first implant 3, and the suture 5 that passes through the second implant 4 along the threading direction can pass through the suture loop 51.

[0056] In this embodiment, one end of both the first implant 3 and the second implant 4 is provided with an abutment groove 73. Correspondingly, the pushing end 71 is provided as a pointed tip, and the abutment groove 73 is provided as a groove that mates with the pushing end 71, facilitating stable abutment and pushing. Please refer to [link to relevant documentation]. Figure 10In the unfired state, the suture 5 is sequentially threaded into the suture holes 52 of the first implant 3 and the second implant 4. For the first implant 3, one end of the suture 5 passes through two suture holes 52 sequentially, leaving a short section unused. That is, only one end of the suture 5, with a length of 3-5 mm, protrudes from one suture hole 52 of the first implant 3. The other end of the suture 5 exits from the other suture hole 52 of the first implant 3 and is sequentially threaded through the two suture holes 52 on the second implant 4. Tightening the suture 5 can fix the suture 5 to the first implant 3 through friction. In addition, since a loop 51 is formed on the part of the suture 5 connecting the second implant 4 and the first implant 3, the suture 5 that exits from the second implant 4 along the threading direction can pass through the loop. 51. A knot is formed, and after the first implant 3 and the second implant 4 are implanted on the outside of the meniscus, the suture 5 is tightened to achieve a self-locking state, thus fixing the first implant 3 and the second implant 4 to the meniscus. During the tightening of the suture 5, the friction between the suture 5 and the first implant 3 and the second implant 4 is used to tighten it, and a small section of suture 5 reserved in the first implant 3 is tightened under the action of friction but will not be pulled away from the first implant 3. Multiple thread holes 5 are provided for threading, and the friction can be used to achieve tightening and fixation without the need for additional knotting. It should be noted that the winding method between the suture 5 and the implant can also adopt other conventional winding methods as needed, which will not be elaborated on here.

[0057] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A meniscal repair device, characterized by: include: Fixed shell (1); A puncture tube (2) is connected to the fixed shell (1). The end of the puncture tube (2) facing away from the fixed shell (1) is the puncture end (21), and the puncture end (21) is open. The first implant (3) is movably disposed inside the puncture tube (2) and close to the puncture end (21). The second implant (4) is movably connected to the puncture tube (2) and positioned on the side of the first implant (3) near the fixation shell (1). A suture (5) connects the first implant (3) and the second implant (4). A firing assembly (6) is disposed on the fixed shell (1). A push rod (7) is movably disposed inside the puncture tube (2). One end of the push rod (7) is connected to the firing assembly (6) in a transmission manner. The other end of the push rod (7) is a push end (71). In the unfired state, the push rod (7) is fixed in position inside the puncture tube (2), and the push end (71) is placed between the first implant (3) and the second implant (4). The firing assembly (6) can drive the push rod (7) to reciprocate inside the puncture tube (2) so that the push end (71) can be connected to the first implant (3) or the second implant (4) in sequence and be fired. The puncture tube (2) has an axially extending groove on its wall near the puncture end (21). The groove penetrates the wall of the puncture tube (2) along its thickness direction, and one end of the groove extends to the puncture end (21). The second implant (4) is slidably connected to the groove. The areas on both sides of the second implant (4) that mate with the edges of the groove are provided with inner grooves, and the edges of the groove can be inserted into the inner grooves. The second implant (4) has a large width extending into the puncture tube (2). The width of the groove; the side end of the second implant (4) extending into the puncture tube (2) and the inner wall of the puncture tube (2) have a channel (22) for the push rod (7) to pass through; in the second firing state, the firing assembly (6) can drive the push end (71) to return through the channel (22) to the side of the second implant (4) near the fixed shell (1), and the second implant (4) slides along the groove under the push of the push end (71) and can be disengaged from the puncture end (21); The portion of the push rod (7) that slides within the channel (22) is provided with a clearance groove (72) on the outer wall of the second implant (4). When the push rod (7) slides within the channel (22), the clearance groove (72) is used to avoid the portion of the second implant (4) that extends into the puncture tube (2). When the push end (71) returns through the channel (22), the side end of the second implant (4) that extends into the puncture tube (2) can abut and push the push end (71), causing the push rod (7) to undergo elastic deformation within the puncture tube (2). This allows the push end (71) to return to its original position and connect with the end of the second implant (4) after it returns and disengages from the second implant (4).

2. The meniscal repair device of claim 1, wherein: The firing assembly (6) includes a trigger (61), a limiting component (62), and a reset component (63); the trigger (61) is rotatably connected to the fixed housing (1), and the trigger (61) has a transmission part (611) that extends into the fixed housing (1) and an operating part (612) that extends out of the fixed housing (1); the transmission part (611) is operatively connected to the push rod (7), and the reset component (63) is connected to the transmission part (611) and the fixed housing (1); the limiting component (62) is disposed inside the fixed housing (1) and can limit and fix the relative position of the trigger (61) and the fixed housing (1) in the unfired state; In the first firing state, by applying force to the operating part (612), the trigger (61) is rotated relative to the fixed shell (1). The transmission part (611) can drive the push rod (7) to push the first implant (3) outward in the puncture tube (2), and cause the reset component (63) to undergo elastic deformation. The trigger (61) can disengage from the limiting component (62). In the second firing state, the transmission part (611) can drive the operating part (612) to rotate in the opposite direction under the restoring force of the reset component (63), so as to drive the push rod (7) to slide inward in the puncture tube (2), so that the push end (71) is placed on the side of the second implant (4) close to the fixed shell (1). By repeatedly applying force to the operating part (612), the push rod (7) can push the second implant (4) outward in the puncture tube (2).

3. The meniscal repair device of claim 2, wherein: The limiting component (62) includes a limiting plate (621) and an elastic component (622). The limiting plate (621) is rotatably disposed within the fixed housing (1). A limiting rod (613) is provided on the portion of the trigger (61) located within the fixed housing (1). In the unfired state, the limiting plate (621) is connected to the limiting rod (613) under the elastic force of the elastic component (622) in the initial position to fix the relative position of the trigger (61) and the fixed housing (1). In the first firing state, by applying a force to the operating part (612), the trigger (61) is rotated relative to the fixed housing (1), and the limiting rod (613) can disengage from the limiting plate (621), and the limiting plate (621) can disengage from the initial position under the elastic force of the elastic component (622).

4. The meniscal repair device according to claim 1, wherein: It also includes a puncture limiting tube (8), which is connected to the fixing shell (1) and sleeved on the outside of the puncture tube (2); the end of the puncture limiting tube (8) away from the fixing shell (1) is a limiting end (81), and the puncture end (21) extends out of the limiting end (81); the limiting end (81) is used to limit the puncture depth of the puncture end (21); and in the unfired state, the limiting end (81) can be pressed against the outside of the second implant (4).

5. The meniscal repair device according to claim 4, wherein: It also includes a depth adjustment component (9), which is disposed on the fixed shell (1) and connected to the puncture limiting tube (8). The depth adjustment component (9) can drive the puncture limiting tube (8) to move outside the puncture tube (2) to adjust the distance between the limiting end (81) and the puncture end (21).

6. The meniscus repair device according to claim 5, characterized in that: The depth adjustment component (9) includes a sleeve (91) and an adjustment handle (92). The sleeve (91) is fixedly sleeved outside the puncture limiting tube (8) and slidably connected to the fixed shell (1). The fixed shell (1) is provided with a movable groove (11). One end of the adjustment handle (92) extends into the fixed shell (1) and is fixedly connected to the sleeve (91). The other end of the adjustment handle (92) extends out of the fixed shell (1) through the movable groove (11). The adjustment handle (92) can slide relative to the fixed shell (1). The fixed shell (1) is provided with multiple fixed positions (12) along the movement direction of the adjustment handle (92). The adjustment handle (92) can be connected to different fixed positions (12) to adjust and fix the movement distance of the puncture limiting tube (8) relative to the puncture tube (2).

7. The meniscal repair device according to claim 6, wherein: The cannula (91) can extend out of the fixed shell (1) during the process of driving the puncture limiting tube (8) to move; the cannula (91) at least the part that can extend out of the fixed shell (1) and the puncture tube (2) at least the part that can extend out of the puncture limiting tube (8) are both provided with scales (93) along the length direction.

8. The meniscal repair device according to claim 1, wherein: Both the first implant (3) and the second implant (4) have an abutment groove (73) at one end near the fixed shell (1) that can abut against the push end (71); both the first implant (3) and the second implant (4) have two thread holes (52), and the suture (5) is sequentially threaded through the thread holes (52) on the first implant (3) and the second implant (4), and a loop (51) is formed on the part of the suture (5) that connects the second implant (4) and the first implant (3), and the suture (5) that passes through the second implant (4) along the threading direction can pass through the loop (51).

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