Meniscus repairing device

Abstract

The meniscus repairing device comprises a handle, a mounting cavity is formed in the handle, a mounting inner cylinder is arranged on the inner wall of the mounting cavity, a puncture tube is fixedly connected to the front end of the mounting inner cylinder, a sliding cavity is formed between the outer wall of the mounting inner cylinder and the inner wall of the handle, and the handle is provided with a propelling tube inserted into the sliding cavity in a sliding mode; the installation inner cylinder is in sliding connection with a push rod in the axial direction, the front end of the push rod penetrates through the puncture tube in a sliding mode, the inner wall of the installation inner cylinder is fixedly connected with a tower needle cylinder, the tower needle cylinder is provided with a tower needle cavity, the tower needle cavity is formed by a plurality of unit clamping grooves which are distributed in the axial direction and sequentially communicated, and the push rod is fixedly provided with a tower needle clamping block which is elastically arranged and is clamped and embedded in the unit clamping grooves in a sliding mode. The front ends of the unit clamping grooves are arranged in a necking-down mode, the inner walls of the rear ends of the unit clamping grooves form retaining faces, the tower needle clamping blocks are matched with the unit clamping grooves so that the unit sliding distance of the tower needle clamping blocks can be the length of one implant, and the pushing pipe is provided with a front pushing piece for driving the pushing rod to move forwards. The device has the effect that multiple groups of implants can be conveniently implanted.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a meniscus repair device. Background Art

[0002] In the field of sports medicine, meniscus suturing is considered the preferred surgical treatment option for meniscus injuries. Under current technical conditions, the suture device can only continuously implant a set of implants, namely two rigid implants or flexible implants. During the operation, the surgeon needs to firmly grasp the handle of the suture device and apply external force to the suture device to embed the built-in implant into the tear area. The suture device handle then uses the propulsion mechanism to push the implant to the injured area for repair.

[0003] When facing a surgery involving a larger injured area, if one set of implants cannot meet the needs of the surgery, the suture device needs to be replaced to implant multiple sets of implants, which undoubtedly prolongs the surgery time and the wound needs to go through the implantation process again, which prolongs the surgery time and increases the complexity of the operation. Therefore, further improvement is needed. Summary of the Invention

[0004] In order to facilitate the implantation of multiple groups of implants, the present application provides a meniscus repair device.

[0005] The present application provides a meniscus repair device that adopts the following technical solution: The cam is provided with an inserting tube for inserting the cam, and the cam is provided with a guide tube for inserting the cam, and the guide tube has a plurality of guide tubes for inserting the cam, and the guide tube has a plurality of guide tubes for inserting the cam.

[0006] By adopting the above technical solution, when performing an implantation operation, the advancement of the push tube drives the forward push piece forward, thereby driving the push rod and the tower needle block forward together. The tower needle block cooperates with the unit card slot to achieve precise advancement of the length of an implant each time. That is, each time the tower needle block enters a unit card slot, the implant in the front puncture tube will be ejected by the push rod, which facilitates the implantation of multiple groups of implants during the operation, avoids the need to replace the suture device because one group of implants cannot meet the surgical needs, shortens the operation time, and reduces the complexity of the operation.

[0007] Preferably, the rear end surface of the tower needle block is provided with a deformation groove extending toward the front end.

[0008] By adopting the above technical solution, the tower needle card block is provided with a deformation groove, which can improve the elastic deformation ability of the tower needle card block and is more conducive to the sliding and embedding of the tower needle card block in the unit card slot.

[0009] Preferably, the push rod has a forward push limiting portion, and the forward push member includes a front push plate built into the mounting inner cylinder and abutting the rear end of the forward push limiting portion, and a sliding rod fixedly connected to the outer wall of the front push plate and slidingly passing through the mounting inner cylinder. The end of the sliding rod away from the front push plate is fixedly connected to the propulsion tube, and a sliding groove extending axially and connected to the inner cavity is opened through the outer wall of the mounting inner cylinder, the sliding rod slides through the sliding groove, and the push rod slides axially through the front push plate.

[0010] By adopting the above technical solution, when pushing the push tube, the slide rod slides in the slide groove, driving the front push plate forward, and the front push plate abuts the forward push limit part, thereby driving the push rod forward to fire the implant, thereby achieving reliable pushing of the implant.

[0011] Preferably, the rear end face of the tower needle cylinder is axially provided with a retreat groove for the tower needle block to slide backward, the retreat groove is located on one side of the tower needle cavity and is connected to the tower needle cavity, and the front end inner wall of the inner cylinder is provided with an elastic part for forcing the push rod to retreat, and the handle is provided with a rotating component for driving the push rod to rotate around its own axis.

[0012] By adopting the above technical solution, when the tower needle block moves forward and is embedded in the unit slot, the elastic part undergoes elastic deformation and has elastic potential energy. When the operator drives the push rod to rotate through the rotating component, the tower needle block rotates into the retraction groove so that the tower needle block is disengaged from the unit slot. Under the action of the elastic force of the elastic part, the push rod is retreated so that the tower needle block is disengaged from the tower needle tube and thus returns to the initial position; then the rotating component is rotated to reset, the implant is reassembled, and it can be fired again.

[0013] Preferably, the elastic member is a retraction spring, which is sleeved on the push rod. One end of the retraction spring is fixedly connected to the front inner wall of the mounting inner cylinder, and the other end of the retraction spring abuts against the front end surface of the tower needle block. Under normal circumstances, the retraction spring part is arranged in the tower needle cavity.

[0014] Preferably, the rotating assembly includes a first rotating tube coaxially and rotatably penetrating through the rear end of the handle. The first rotating tube extends into the inner cavity of the installation inner cylinder. The front push plate is located between the front push limiting part and the first rotating tube. The push rod axially slides through the first rotating tube, and the push rod and the first rotating tube are circumferentially linked.

[0015] By adopting the above technical solution, by rotating the first rotating tube, the rotation of the push rod is realized, and then the conversion of the tower needle block is realized, providing a new adjustment method for the operation of the meniscus repair device, facilitating the operations such as the implantation of the implant and the reset of the device.

[0016] Preferably, the rotating assembly further includes a knob externally disposed on the handle and coaxially and fixedly connected to the first rotating tube.

[0017] By adopting the above technical solution, a knob externally disposed on the handle and coaxially and fixedly connected to the first rotating tube is provided in the rotating assembly, facilitating the doctor to operate the first rotating tube to drive the push rod to rotate around its own axis.

[0018] Preferably, a linkage block is fixedly connected to the inner wall of the first rotating tube. The linkage block has a linkage hole, and the linkage hole is a polygonal hole. The push rod is coaxially and fixedly connected with a linkage rod slidably inserted into the linkage hole, and the cross section of the linkage rod is polygonal.

[0019] By adopting the above technical solution, the cooperation between the polygonal linkage rod and the polygonal linkage hole of the linkage block can realize the circumferential linkage between the push rod and the first rotating tube. At the same time, the push rod can axially slide relative to the first rotating tube. Furthermore, when the rotating assembly drives the first rotating tube to rotate, the push rod can be driven to rotate around its own axis, facilitating the tower needle block to enter the retraction groove to make the push rod retreat to reload the implant.

[0020] Preferably, the rotating assembly includes a second rotating tube, a rotation stopping rod, a stopping seat and a stopping block. The second rotating tube coaxially and rotatably penetrates through the rear end face of the handle. A first engaging key is coaxially and fixedly connected to the rear end of the second rotating tube. A second engaging key is fixedly connected to the front end of the rotation stopping rod. Both the first engaging key and the second engaging key are in a C-shaped setting and are staggered. The cooperation between the first engaging key and the second engaging key enables the rotation stopping rod to axially slide relative to the second rotating tube but not rotate relative to it. The stopping block is coaxially and fixedly connected to the rotation stopping rod, and the cross section of the stopping block is polygonal. The stopping seat is fixedly connected to the rear end of the handle, and the rear end of the stopping seat has a stopping groove adapted to the stopping block. A stopping spring is provided between the second rotating tube and the rotation stopping rod to force the rotation stopping rod to slide towards the direction close to the second rotating tube under normal conditions so that the stopping block is embedded in the stopping groove.

[0021] By adopting the above technical solution, the cooperation of the stopping spring and the stopping block with the stopping groove ensures the stability of the position of the push rod in the non-rotating state, avoids accidental rotation from affecting the normal use of the device, and has a simple and reliable structure and convenient operation.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. When the push tube moves forward, the forward push piece moves forward, which in turn drives the push rod and the turret needle block forward together. The turret needle block cooperates with the unit card slot to accurately advance the length of one implant each time. That is, every time the turret needle block enters a unit card slot, the implant in the front puncture tube will be ejected by the push rod. This facilitates the implantation of multiple sets of implants during surgery and avoids the need to replace the suture device because one set of implants cannot meet the surgical needs. This shortens the operation time and reduces the complexity of the operation. 2. When the tower needle block moves forward and inserts into the unit slot, the elastic member undergoes elastic deformation and has elastic potential energy. When the operator drives the push rod to rotate through the rotating assembly, the tower needle block rotates into the retraction groove, causing the tower needle block to be disengaged from the unit slot. Under the elastic force of the elastic member, the push rod retreats, causing the tower needle block to be disengaged from the tower needle barrel and return to its initial position. The rotating assembly is then rotated to reset, the implant is reassembled, and the device can be fired again. 3. The cooperation between the stop spring, the stop block and the stop groove ensures the stability of the push rod position in the non-rotating state, avoiding accidental rotation affecting the normal use of the device. The structure is simple, reliable and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a meniscus repair device in Example 1.

[0024] Figure 2 This is a schematic cross-sectional view of a meniscus repair device in Example 1.

[0025] Figure 3 Schematic diagram of the structure of the puncture tube in Example 1.

[0026] Figure 4 Schematic diagram of the structure of the support sleeve in Example 1.

[0027] Figure 5 It is a schematic diagram of the internal structure of the inner cylinder installed in Example 1.

[0028] Figure 6 It is a structural diagram of the tower needle block in Example 1.

[0029] Figure 7 It is a structural diagram of the retreat groove in Example 1.

[0030] Figure 8 It is a structural diagram of the installation sleeve in Example 2.

[0031] Figure 9 It is a structural schematic diagram of the rotating component in Example 3.

[0032] Figure 10 It is a structural schematic diagram of the first bite key and the second bite key in Example 3.

[0033] Explanation of reference numerals: 1. handle; 11. mounting cavity; 12. tail cap; 13. positioning sleeve; 2. mounting inner tube; 21. slide groove; 22. return spring; 3. propulsion tube; 31. force sleeve; 32. forward push member; 321. forward push plate; 322. slide rod; 4. blocking cap; 41. positioning column; 42. position limiting cavity; 43. position limiting button; 44. position limiting sleeve; 5. puncture tube; 51. placement notch; 52. support sleeve; 6. push rod; 61. tower Needle clamp block; 62, deformation groove; 63, linkage rod; 64, mounting sleeve; 7, tower needle cylinder; 71, unit clamping slot; 72, anti-retraction surface; 73, retraction groove; 8, rotating assembly; 81, first rotating tube; 811, linkage block; 82, knob; 83, second rotating tube; 831, first bite key; 84, anti-rotation rod; 841, second bite key; 85, stop seat; 851, stop groove; 86, stop block; 861, force plate; 87, stop spring. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-10 This application is described in further detail.

[0035] Example 1: The present application discloses a meniscus repair device, referring to Figure 1 、 Figure 2 , including a handle 1, the handle 1 having a mounting cavity 11, both ends of the handle 1 being open, the rear end of the handle 1 being coaxially fixedly connected to a tail cap 12 that closes the rear end opening, and the inner wall of the tail cap 12 being coaxially fixedly connected to a positioning sleeve 13. The handle 1 is provided with a mounting inner cylinder 2 fixedly inserted in the mounting cavity 11, both ends of the mounting inner cylinder 2 being open, the rear end of the mounting inner cylinder 2 being coaxially fixedly sleeved in the positioning sleeve 13, a sliding cavity being formed between the outer wall of the mounting inner cylinder 2 and the inner wall of the handle 1, the handle 1 being provided with a propulsion tube 3 slidably inserted in the sliding cavity, the propulsion tube 3 being slidably sleeved in the mounting inner cylinder 2, the front end of the propulsion tube 3 being coaxially fixedly connected to a force-applying sleeve 31 externally disposed on the front end of the handle 1, and the force-applying sleeve 31 being slidably sleeved in the mounting inner cylinder 2.

[0036] Reference Figure 2 、 Figure 3The front end of the inner tube 2 is coaxially fixedly connected to a blocking cap 4. The blocking cap 4 is integrally formed with a positioning column 41 fixedly inserted into the front end of the inner tube 2. The blocking cap 4 is fixedly penetrated with a puncture tube 5 for implantation. The front end of the puncture tube 5 is bent with an arc. The front part of the puncture tube 5 is filled with a plurality of implants. Specifically, the front outer wall of the puncture tube 5 is provided with a placement notch 51 connected to the inner cavity. Multiple implants are sequentially inserted and placed in the front part of the inner cavity of the puncture tube 5 through the placement notch 51. The blocking cap 4 has a limiting cavity 42. The blocking cap 4 is provided with a limiting button 43 that is slidably connected to the limiting cavity 42. The limiting button 43 is fixedly connected to a limiting sleeve 44 that is slidably sleeved on the puncture tube 5. The limiting sleeve 44 is made of a thin plastic tube and is used to control the insertion depth of the puncture tube 5. The connection structure between the blocking cap 4 and the limiting button 43 is prior art and will not be described in detail here.

[0037] Reference Figure 2 、 Figure 4 A push rod 6 is installed in the inner cylinder 2 and is coaxially slidably connected thereto. The front end of the push rod 6 is slidably penetrated into the puncture tube 5 to squeeze and fire the implant. A support sleeve 52 is coaxially fixedly inserted into the rear part of the puncture tube 5. The push rod 6 is coaxially slidably penetrated into the support sleeve 52. The structural stability of the push rod 6 is improved by the support sleeve 52.

[0038] Reference Figure 2 、 Figure 5 , a tower needle cylinder 7 is coaxially fixedly connected to the inner wall of the inner cylinder 2. The tower needle cylinder 7 is a plastic part. The tower needle cylinder 7 has a tower needle cavity. The tower needle cavity is formed by a plurality of unit card slots 71 arranged along the axial direction and connected in sequence. In this embodiment, there are six unit card slots 71. The front end of the unit card slot 71 is configured to be constricted, so that the rear end inner wall of the unit card slot 71 forms a stop surface 72. The front and rear end faces of the tower needle cylinder 7 are both provided with through holes connected to the tower needle cavity.

[0039] Reference Figure 5 、 Figure 6The outer wall of the push rod 6 is fixedly connected with a tower needle block 61 that is elastically arranged and slidably embedded in the unit card slot 71. Specifically, the tower needle block 61 is made of elastic plastic material. The tower needle block 61 is adapted to the unit card slot 71. Two tower needle blocks 61 are provided at the same position and are symmetrically distributed around the axis of the push rod 6 to form a group of unit tower needles. The outer wall of the unit tower needle is a guide surface. The distance between the front end face and the rear end face of the tower needle block 61 is equal to the length of an implant, so that the unit sliding distance of the unit tower needle is the length of an implant, that is, each time the unit tower needle moves forward and slides and is embedded in the unit card slot 71, the puncture tube 5 pushes out an implant. In this embodiment, the rear end face of the tower needle block 61 is provided with a deformation groove 62 extending toward the front end, so that the outer part of the tower needle block 61 away from the axis of the push rod 6 is the deformation part. When the front end of the tower needle block 61 is pushed forward from the through hole into the first unit slot 71, the guide surface of the tower needle block 61 abuts against the inner wall of the through hole, thereby forcing the deformation part to deform toward the axis of the push rod 6 so that it can smoothly enter the unit slot 71. After entering the unit slot 71, the deformation part of the tower needle block 61 is elastically reset, and the rear end face of the tower needle block 61 abuts against the stop surface 72 to limit the retreat of the tower needle block 61. The tower needle block 61 is pushed forward into the next unit slot 71 with the same principle.

[0040] The push rod 6 has a forward push limiter. In this embodiment, there are six groups of unit pins corresponding to the number of pins. The six groups of unit pins are continuously distributed along the axial direction of the push rod 6. That is, the front end face of one pin block 61 abuts the rear end face of the adjacent pin block 61. The rear end face of the rearmost pin block 61 serves as the forward push limiter. The propulsion tube 3 is provided with a forward push member 32 for driving the push rod 6 forward. Specifically, the forward push member 32 includes a forward push plate 321 built into the mounting inner tube 2 and abutting the rear end face of the forward push limiter, and a slide rod 322 fixedly connected to the outer wall of the forward push plate 321 and slidably passing through the mounting inner tube 2. One end of the sliding rod 322 away from the front push plate 321 is fixedly connected to the propulsion tube 3. There are two sliding rods 322 and they are symmetrically arranged along the axis of the front push plate 321. The outer wall of the inner tube 2 is penetrated by a sliding groove 21 extending axially and connected to the inner cavity. The sliding rod 322 slides through the sliding groove 21, and the push rod 6 slides coaxially along the axial direction through the front push plate 321.

[0041] Reference Figure 5 、 Figure 7The rear end face of the tower needle cylinder 7 is provided with a retraction groove 73 along the axial direction for the tower needle block 61 to slide back and out of the tower needle cylinder 7. The retraction groove 73 is located on one side of the tower needle cavity and is connected to the inner wall of the tower needle cavity. In this embodiment, there are two retraction grooves 73 and they are symmetrically arranged along the axis of the tower needle cavity. The retraction grooves 73 and the unit card slot 71 are distributed at 90 degrees. The tower needle block 61 clamped in the unit card slot 71 can enter the retraction groove 73 after rotating 90 degrees. The inner wall of the rear end of the positioning column 41 is provided with an elastic member that forces the push rod 6 to retreat. In this embodiment, the elastic member is a retraction spring 22. The retraction spring 22 is sleeved on the push rod 6. One end of the retraction spring 22 is fixedly connected to the inner wall of the rear end of the positioning column 41, and the other end of the retraction spring 22 abuts against the front end face of the tower needle block 61 at the front. Under normal circumstances, the retraction spring 22 is partially arranged in the tower needle cavity. In other embodiments, there is a deformation gap between the outer wall of the tower needle tube 7 and the inner wall of the installation inner tube 2, and an expansion groove connected to the retraction groove 73 is opened axially through the outer wall of the tower needle tube 7 to improve the smoothness of the tower needle block 61 entering the unit card slot 71.

[0042] Reference Figure 2 、 Figure 5 The handle 1 is provided with a rotating assembly 8 that drives the push rod 6 to rotate about its own axis. In this embodiment, the rotating assembly 8 includes a first rotating tube 81 that coaxially rotates through the rear end surface of the tail cap 12 and the positioning sleeve 13, and a knob 82 that is externally disposed on the tail cap 12 and coaxially fixedly connected to the rear end of the first rotating tube 81. The first rotating tube 81 extends into the inner cavity of the mounting inner tube 2. The front push plate 321 is located between the rearmost tower needle block 61 and the first rotating tube 81. The push rod 6 slides axially through the first rotating tube 81. The push rod 6 and the first rotating tube 81 are circumferentially linked. Specifically, a linkage block 811 is coaxially fixedly connected to the inner wall of the front end of the first rotating tube 81. The linkage block 811 has a polygonal linkage hole. The rear end of the push rod 6 is coaxially fixedly connected to a linkage rod 63 that slides into the linkage hole. The linkage rod 63 has a polygonal cross-section.

[0043] The implementation principle of Example 1 is as follows: under normal circumstances, the tower needle block 61 and the unit card slot 71 are in a aligned state. During the implantation operation, the operator holds the handle 1 with one hand and pushes the force sleeve 31 with the other hand to drive the pushing tube 3 forward, thereby driving the front push plate 321 forward through the sliding rod 322, and then driving the push rod 6 and the tower needle block 61 to move forward together. When the front end of the tower needle block 61 enters the first unit card slot 71 from the rear end through hole of the tower needle tube 7, the guide surface of the tower needle block 61 abuts against the inner wall of the through hole, thereby forcing the deformed part to deform toward the axis of the push rod 6, so that the tower needle block 61 smoothly enters the unit card slot 71. After entering the unit card slot 71, the deformed part of the tower needle block 61 elastically resets, and the rear end surface of the tower needle block 61 abuts against the stop surface 72 to limit the retreat of the tower needle block 61, and the tower needle block 61 moves forward into the next unit card slot 7 1, each time the tower needle block 61 enters a unit card slot 71, the implant in the front puncture tube 5 will be fired by the push rod 6. During the forward movement of the push rod 6, the retraction spring 22 is compressed and has elastic potential energy. When all the implants are fired, the operator drives the first rotating tube 81 to rotate 90 degrees through the knob 82, thereby driving the push rod 6 to rotate around its own axis through the linkage block 811 and the linkage rod 63, thereby causing the tower needle block 61 to rotate into the retraction groove 73 so that the tower needle block 61 is disengaged from the unit card slot 71. After the tower needle block 61 loses the restriction of the stop surface 72, the push rod 6 is retreated under the elastic force of the retraction spring 22 so that the tower needle block 61 is disengaged from the tower needle tube 7 and thus returns to the initial position; then the push rod 6 is driven to rotate and reset by the knob 82 and the first rotating tube 81, the implant is reassembled, and it can be fired again.

[0044] Example 2: The difference from Example 1 is that, referring to Figure 8 In this embodiment, a group is provided corresponding to the number of unit tower needles, and the push rod 6 is coaxially fixedly connected with a mounting sleeve 64 located between the front push plate 321 and the tower needle block 61. The front end surface of the mounting sleeve 64 abuts against the rear end surface of the tower needle block 61, and the rear end surface of the mounting sleeve 64 is a forward push limit portion, and the front push plate 321 abuts against the rear end surface of the mounting sleeve 64.

[0045] The implementation principle of Example 2 is: only one group of unit turret pins is provided, which effectively reduces the elastic damping force when the turret pin block 61 enters the last unit slot 71, making the operation more labor-saving.

[0046] Example 3: The difference from Example 1 is that, referring to Figure 9 、 Figure 10The rotating assembly 8 includes a second rotating tube 83, a stop rod 84, a stop seat 85, and a stop block 86. The second rotating tube 83 is coaxially rotatably disposed through the rear end of the tail cap 12. A first snap key 831 is coaxially fixedly connected to the rear end of the second rotating tube 83, and a second snap key 841 is fixedly connected to the front end of the stop rod 84. The first snap key 831 and the second snap key 841 are both arranged in a ⌚-shaped pattern and staggered. The first snap key 831 and the second snap key 841 cooperate to allow the stop rod 84 to slide axially relative to the second rotating tube 83 but not to rotate relative to the second rotating tube 83. The stop block 86 is coaxially fixedly connected to the stop rod 84. The cross-section of the stop block 86 is polygonal, and in this embodiment, it is square. The stop seat 85 is fixedly connected to the rear end of the tail cap 12. The rear end of the stop seat 85 has a stop groove 851, which is a square groove adapted to fit the stop block 86.

[0047] A retaining spring 87 is provided between the second rotating tube 83 and the anti-rotation rod 84. This spring forces the anti-rotation rod 84 to slide toward the second rotating tube 83, causing the stop block 86 to engage with the retaining groove 851. The retaining spring 87 is mounted over the first and second engaging keys 831, 841. One end of the retaining spring 87 is fixedly connected to the rear end of the second rotating tube 83, while the other end of the retaining spring 87 is fixedly connected to the front end of the anti-rotation rod 84. A force plate 861 is fixedly connected to the rear end of the stop block 86, and its outer wall has anti-slip grooves.

[0048] The implementation principle of this embodiment is as follows: under normal circumstances, the stop spring 87 forces the anti-rotation rod 84 to slide toward the second rotating tube 83, so that the stop block 86 is inserted into the stop groove 851, thereby limiting the rotation of the anti-rotation rod 84 and the second rotating tube 83, thereby ensuring the stability of the position of the push rod 6 in the non-rotating state, avoiding accidental rotation affecting the normal use of the device. When the second rotating tube 83 needs to be rotated, a force is applied to the force plate 861, so that the stop block 86 slides out of the stop groove 851 in the direction away from the stop seat 85, thereby pulling the anti-rotation rod 84 to slide relative to the second rotating tube 83. After the rotation restriction of the anti-rotation rod 84 is released, the anti-rotation rod 84 can be rotated, and then the second rotating tube 83 is driven to rotate through the first bite key 831 and the second bite key 841, thereby realizing the rotation of the push rod 6.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A meniscus repair device, characterized by: The invention comprises a handle (1), wherein the front end of the handle (1) is provided with an installation cavity (11) along the axial direction, the inner wall of the rear end of the installation cavity (11) is provided with an installation inner cylinder (2), the front end of the installation inner cylinder (2) is fixedly connected with a puncture tube (5) for performing implantation, the front part of the puncture tube (5) is filled with a plurality of implants, a sliding cavity is formed between the outer wall of the installation inner cylinder (2) and the inner wall of the handle (1), the handle (1) is provided with a propulsion tube (3) which is slidably inserted into the sliding cavity, the installation inner cylinder (2) is slidably connected with a push rod (6) along the axial direction, the front end of the push rod (6) is slidably penetrated into the puncture tube (5) to push the implant, and the installation inner cylinder ( 2) The inner wall is fixedly connected with a tower needle cylinder (7), the tower needle cylinder (7) has a tower needle cavity, and the tower needle cavity is formed by a plurality of unit card slots (71) arranged along the axial direction and connected in sequence. The push rod (6) is fixed with a tower needle block (61) which is elastically set and slidably embedded in the unit card slot (71). The front end of the unit card slot (71) is configured as a constricted opening, and the rear end inner wall of the unit card slot (71) forms a stop surface (72). The tower needle block (61) is adapted to the unit card slot (71) so that the unit sliding distance of the tower needle block (61) is the length of an implant. The propulsion tube (3) is provided with a front push piece (32) for driving the push rod (6) forward.

2. A meniscus repair device according to claim 1, characterized in that: The rear end surface of the tower needle clamping block (61) is provided with a deformation groove (62) extending toward the front end.

3. The meniscus repair device according to claim 1, characterized in that: The push rod (6) has a forward push limit portion, and the forward push member (32) includes a forward push plate (321) built into the mounting inner tube (2) and abutting against the rear end of the forward push limit portion, and a slide rod (322) fixedly connected to the outer wall of the forward push plate (321) and slidingly passing through the mounting inner tube (2). One end of the slide rod (322) away from the front push plate (321) is fixedly connected to the propulsion tube (3), and the outer wall of the mounting inner tube (2) is provided with a slide groove (21) extending axially and connected to the inner cavity. The slide rod (322) slides through the slide groove (21), and the push rod (6) slides through the front push plate (321) along the axial direction.

4. The meniscus repair device according to claim 3, characterized in that: The rear end surface of the tower needle cylinder (7) is provided with a retreat groove (73) along the axial direction for the tower needle block (61) to slide backward. The retreat groove (73) is located on one side of the tower needle cavity and is connected to the tower needle cavity. The front end inner wall of the mounting inner cylinder (2) is provided with an elastic member for forcing the push rod (6) to retreat. The handle (1) is provided with a rotating assembly (8) for driving the push rod (6) to rotate around its own axis.

5. The meniscus repair device according to claim 4, characterized in that: The elastic member is a retraction spring (22), which is sleeved on the push rod (6). One end of the retraction spring (22) is fixedly connected to the front inner wall of the mounting inner cylinder (2), and the other end of the retraction spring (22) abuts against the front end surface of the tower needle block (61). Under normal conditions, the retraction spring (22) is partially inserted into the tower needle cavity.

6. The meniscus repair device according to claim 4, characterized in that: The rotating assembly (8) includes a first rotating tube (81) coaxially and rotatably penetrating through the rear end of the handle (1). The first rotating tube (81) extends into the inner cavity of the mounting inner cylinder (2). The front push plate (321) is located between the front push limiting portion and the first rotating tube (81). The push rod (6) axially slides through the first rotating tube (81). The push rod (6) and the first rotating tube (81) are circumferentially linked.

7. The meniscus repair device according to claim 6, characterized in that: The rotating assembly (8) further includes a knob (82) externally disposed on the handle (1) and coaxially fixedly connected to the first rotating tube (81).

8. The meniscus repair device according to claim 6, characterized in that: A linkage block (811) is fixedly connected to the inner wall of the first rotating tube (81). The linkage block (811) has a linkage hole, which is a polygonal hole. The push rod (6) is coaxially fixedly connected with a linkage rod (63) slidably inserted into the linkage hole. The cross section of the linkage rod (63) is polygonal.

9. The meniscus repair device according to claim 4, characterized in that: The rotating assembly (8) includes a second rotating tube (83), a rotation stopping rod (84), a stopping seat (85) and a stopping block (86). The second rotating tube (83) coaxially rotates through the rear end face of the handle (1). A first engaging key (831) is coaxially fixedly connected to the rear end of the second rotating tube (83). A second engaging key (841) is fixedly connected to the front end of the rotation stopping rod (84). Both the first engaging key (831) and the second engaging key (841) are in a C-shaped setting and are staggered. The first engaging key (831) and the second engaging key (841) cooperate, so that the rotation stopping rod (84) can axially slide relative to the second rotating tube (83) but cannot rotate relative to it. The stopping block (86) is coaxially fixedly connected to the rotation stopping rod (84). The cross section of the stopping block (86) is polygonal. The stopping seat (85) is fixedly connected to the rear end of the handle (1). The rear end of the stopping seat (85) has a stopping groove (851), which is adapted to the stopping block (86). A stopping spring (87) is provided between the second rotating tube (83) and the rotation stopping rod (84), which forces the rotation stopping rod (84) to slide towards the second rotating tube (83) in the normal state so that the stopping block (86) is embedded in the stopping groove (851).

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