An all-suture meniscal fixator, implant device, and suture fixation method

Abstract

The application relates to a full-suture meniscus fixator, an implanting device and a suture fixing method, relates to the technical field of medical instruments, and comprises a first fixing part and a second fixing part, a positioning hole is arranged in the middle of the first fixing part, the same positioning holes are arranged at the two ends of the second fixing part, an integral suture is arranged on one side of the first fixing part, one end of the suture away from the first fixing part is sequentially threaded through the positioning hole on the first fixing part and the two positioning holes on the second fixing part, and the suture is wound around the suture between the first fixing part and the second fixing part. The application has the effects of reducing the operation time, reducing the operation difficulty, and improving the operation safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a full-suture meniscus fixator, an implant device and a suture fixing method. BACKGROUND

[0002] There are medial and lateral semilunar-shaped bones on the tibial articular surface, called meniscus, the edge part is thicker and is closely connected with the joint capsule, the center part is thin and is in a free state. Except for the edge part damage which can be self-repaired, the meniscus cannot be self-repaired after the meniscus is broken, so the meniscus rupture site needs to be sutured and fixed.

[0003] Meniscus horizontal tear is a common type of meniscus tear, and generally meniscus tear damage is repaired by surgical method. The current common meniscus suture surgery can use direct suture method of suture needle, or suture method of suture gun.

[0004] In view of the above related art, the surgical process of the direct suture of the suture needle is relatively complex, and the process of shrinking the meniscus tear by the suture line and fixing the meniscus consumes more time, causing the surgical difficulty to be large, thereby increasing the risk of the surgery. SUMMARY

[0005] The purpose of the present application is to provide a full-suture meniscus fixator, an implant device and a suture fixing method, which can reduce the operation time, reduce the operation difficulty, and thus improve the safety of the operation.

[0006] In a first aspect, the full-suture meniscus fixator provided by the present application adopts the following technical scheme:

[0007] A full-suture meniscus fixator, comprising a first fixing member and a second fixing member, a positioning hole is formed in the middle of the first fixing member, the same positioning hole is formed at both ends of the second fixing member, an integral suture line is arranged on one side of the first fixing member, one end of the suture line away from the first fixing member passes through the positioning hole on the first fixing member and the two positioning holes on the second fixing member in sequence, and the suture line is wound around the suture line between the first fixing member and the second fixing member.

[0008] By adopting the technical scheme, the end of the suture wire away from the first fixing member passes through the positioning hole on the first fixing member, then passes through the positioning hole on the second fixing member in sequence, and passes around outside the suture wire between the first fixing member and the second fixing member, so as to form a slip knot. Therefore, when the first fixing member and the second fixing member are located on the same side of the meniscus, a part of the suture wire between the first fixing member and the second fixing member is located on the other side of the meniscus, and the slip knot is located on this side. By pulling the free end of the suture wire, the length of the suture wire between the first fixing member and the second fixing member can be quickly shortened until the slip knot is tightened, so that the torn meniscus is quickly sutured. Therefore, the operation time is greatly shortened, the operation difficulty is reduced, and the operation safety and success rate are improved.

[0009] Optionally, the first fixing member is triangular, rectangular or semicircular, and the second fixing member is dumbbell-shaped, rectangular or circular.

[0010] By adopting the technical scheme, under the pulling of the suture wire, the shape of the first fixing member and the second fixing member enables the first fixing member and the second fixing member to fit the meniscus, and the contact area with the meniscus is increased, so as to reduce the possibility of the suture wire detaching from the meniscus due to the tightening of the suture wire, and reduce the operation risk.

[0011] Optionally, the first fixing member, the second fixing member and the suture wire are made of ultra-high molecular weight polyethylene.

[0012] By adopting the technical scheme, the influence of ultra-high molecular weight polyethylene on the human body is small, so as to reduce the rejection reaction after implantation, thereby reducing the post-implantation complications.

[0013] In a second aspect, the implantation device provided by the application adopts the following technical scheme:

[0014] An implantation device comprises a first suture needle and a second suture needle. A first wire guide groove parallel to the first suture needle is formed on the first suture needle. A first accommodating groove in communication with the first wire guide groove is formed on the end face of the end of the first suture needle. The first fixing member is inserted into the first accommodating groove. The end of the second suture needle is provided with a center needle coaxial with the second suture needle. The center needle abuts against the center of the second fixing member.

[0015] By adopting the technical scheme, the first fixing member is inserted into the first accommodating groove, the center needle on the second suture needle abuts against the center of the second fixing member, and the second fixing member is folded so that the two ends of the second fixing member are close to the second suture needle. The suture wire is distributed along the first wire guide groove. Therefore, when the first suture needle and the second suture needle penetrate the meniscus, the first fixing member and the second fixing member can reduce the contact with the meniscus, thereby reducing the damage to the meniscus. Meanwhile, the suture wire will not shake at will under the action of the first wire guide groove, further improving the stability of the operation.

[0016] Optionally, the second suture needle is provided with two second wire grooves parallel to the second suture needle, and the end face of the second suture needle is provided with two second accommodating grooves in communication with the second wire grooves, and the two second accommodating grooves are located on both sides of the ejector pin.

[0017] By adopting the above technical scheme, after the ejector pin abuts against the center of the second fixing member, the two ends of the second fixing member are respectively inserted into the two second accommodating grooves, and the sutures on both sides of the second fixing member are respectively installed in the corresponding second wire grooves, thereby further reducing the abrasion of the second fixing member on the meniscus.

[0018] Optionally, the second suture needle is provided with a guide hole, one end of the ejector pin penetrates through the second suture needle through the guide hole, and is in sliding connection with the second suture needle, and a limiting component for controlling the moving range of the ejector pin is arranged between the ejector pin and the second suture needle.

[0019] By adopting the above technical scheme, when the second suture needle drives the ejector pin to penetrate through the meniscus, the ejector pin is moved, the second fixing member is driven away from the second suture needle, after the second fixing member is separated from the second accommodating groove, the ejector pin returns to the original position and is separated from the second fixing member, thereby quickly separating the second fixing member from the second suture needle, and improving the convenience of operation.

[0020] Optionally, the limiting component includes a limiting block, the limiting block is arranged at one end of the ejector pin close to the second accommodating groove, and the diameter of the limiting block is greater than that of the guide hole, one end of the ejector pin away from the second suture needle is provided with a limiting plate, and a spring is arranged between the limiting plate and the second suture needle.

[0021] By adopting the above technical scheme, in the process that the second suture needle penetrates through the meniscus, the meniscus exerts resistance on the second suture needle and the ejector pin, under the resistance, the ejector pin tends to move to the inside of the second suture needle, and under the limitation of the limiting block, relative dislocation is not generated, when it is needed to separate the second fixing member from the second suture needle, the limiting plate is pushed, and after the pushing is completed, the pressure is stopped, the spring automatically returns the limiting plate and the ejector pin to the original position, and the operation is simple and convenient.

[0022] In a third aspect, the application provides a suture fixing method, which adopts the following technical scheme:

[0023] A suture fixing method, comprising the following steps:

[0024] S1: preparing a fixing device, and sutures are sequentially threaded through positioning holes on a first fixing member and a second fixing member;

[0025] S2: The fixator is installed into the implanting device, the first fixing member is inserted into the first accommodating groove, the top pin abuts against the middle part of the second fixing member, the second fixing member is folded, the two ends of the second fixing member abut against the two sides of the second suture needle respectively, the suture thread is distributed along the first wire groove and the second guide groove, and the suture thread passes through one end of the second fixing member and is looped outside the first fixing member and the second fixing member, thereby forming a sliding knot;

[0026] S3: The first suture needle and the second suture needle both pass through the meniscus, the first fixing member and the second fixing member are located on the same side of the meniscus and are separated from the first suture needle and the second suture needle, the suture thread between the first fixing member and the second fixing member is located on the other side of the meniscus, the first suture needle and the second suture needle are separated from the meniscus, and the meniscus is sutured by pulling the end of the suture thread.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The fixator is made of full suture weaving, which reduces the rejection reaction of the human body, improves the operation effect, reduces the operation time and the operation difficulty, and thus improves the success rate and safety of the operation;

[0029] 2. The implanting device further improves the convenience of the operation and the stability of the operation, so that the operation is simple and fast. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0031] Figure 2 is a schematic diagram of the structure of the first suture needle in embodiment 2 of the present application;

[0032] Figure 3 is a schematic diagram of the structure of the second suture needle in embodiment 2 of the present application;

[0033] Figure 4 is a schematic diagram of the structure of the second suture needle in embodiment 3 of the present application;

[0034] In the figure, 1 is a first fixing member; 2 is a second fixing member; 3 is a suture thread; 4 is a positioning hole; 5 is a first suture needle; 51 is a first accommodating groove; 52 is a first wire groove; 6 is a second suture needle; 61 is a second accommodating groove; 62 is a second wire groove; 63 is a guide hole; 7 is a top pin; 71 is a top rod; 72 is a needle head; 8 is a limiting assembly; 81 is a limiting block; 82 is a limiting plate; and 83 is a spring. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below in combination with the accompanying drawings. Figure 1 - the accompanying drawings Figure 4 The present application will be further described in detail below in combination with the accompanying drawings.

[0036] Embodiment 1: a full suture meniscus fixator, referring to Figure 1 , the first fixing member 1 is provided with a triangle, and the second fixing member 2 is provided with a dumbbell shape, the suture 3 is arranged between the first fixing member 1 and the second fixing member 2, the first fixing member 1 and the second fixing member 2 are both woven by the suture 3, and one end of the suture 3 is integrally arranged with one corner of the first fixing member 1.

[0037] The center of the first fixing member 1 is provided with a positioning hole 4, and the two ends of the second fixing member 2 are also provided with the positioning hole 4, the free end of the suture 3 passes through the center of the first fixing member 1, and then passes through the two positioning holes 4 of the second fixing member 2 in turn, the free end of the suture 3 is wrapped around the outside of the suture 3 between the first fixing member 1 and the second fixing member 2 after passing through the second fixing member 2, thereby forming a slip knot.

[0038] The suture 3 is made of ultra-high molecular weight polyethylene, and a drug or a growth factor for promoting tissue production differentiation is coated on the surface of the suture 3, thereby reducing the risk of postoperative complications.

[0039] In addition, the first fixing member 1 can also be provided in a rectangular or semicircular shape, and the second fixing member 2 can also be provided in a rectangular or circular shape, so as to increase the contact area of the first fixing member 1 and the second fixing member 2 with the meniscus.

[0040] The implementation principle of the embodiment 1 of the application is that the first fixing member 1 and the second fixing member 2 are located on the same side of the meniscus, part of the suture 3 between the first fixing member 1 and the second fixing member 2 is located on the other side of the meniscus, and the slip knot is on the same side as the suture 3. By pulling the free end of the suture 3, the suturing work can be quickly completed.

[0041] Embodiment 2: an implant device, referring to Figure 2 and Figure 3 , comprising a first suture needle 5 and a second suture needle 6, a first wire groove 52 parallel to the first suture needle 5 is arranged on the outer wall of the first suture needle 5, the first wire groove 52 is used for accommodating the suture 3, a first accommodating groove 51 is arranged on the end face of one end of the first suture needle 5, the first fixing member 1 can be inserted into the first accommodating groove 51 after being folded and contracted, and the suture 3 connected with the first fixing member 1 is arranged along the first wire groove 52.

[0042] The second suture needle 6 is fixed with a thimble 7 on the end face of one end of the second suture needle 6, the thimble 7 is coaxially fixed with the second suture needle 6, a clamping groove is arranged on the end of the thimble 7 away from the second suture needle 6, the middle part of the second fixing member 2 is inserted into the clamping groove, and the two ends of the second fixing member 2 are folded, and the two ends of the second fixing member 2 are close to the second suture needle 6.

[0043] The implementation principle of the embodiment 2 of the application is that after the first suture needle 5 and the second suture needle 6 pass through the meniscus, the first fixing member 1 and the second fixing member 2 pass through the meniscus with the first suture needle 5 and the second suture needle 6, the slip knot is left on the other side, the first fixing member 1 is separated from the first accommodating groove 51, the second fixing member 2 is separated from the thimble 7, and the first suture needle 5 and the second suture needle 6 are extracted, the free end of the slip knot is pulled, and the contraction and fixation of the suture line 3 are quickly completed.

[0044] Embodiment 3: refer to Figure 2 and Figure 4 The difference between the embodiment 3 and the embodiment 2 is that the thimble 7 comprises a top rod 71 and a needle head 72 fixed coaxially, a clamping groove is arranged at the end of the needle head 72 away from the top rod 71, a guide hole 63 distributed along the axis is arranged in the second suture needle 6, the top rod 71 is inserted into the guide hole 63 and is in sliding connection with the second suture needle 6. The top rod 71 is provided with a limiting assembly 8 for limiting the movement range of the top rod 71 relative to the second suture needle 6.

[0045] The limiting assembly 8 comprises a limiting block 81 fixedly connected to the top rod 71, the limiting block 81 is fixed to the side of the needle head 72 close to the second suture needle 6, and the limiting block 81 gradually shrinks away from the needle head 72, thereby not affecting the accommodation of the second fixing member 2. The limiting assembly 8 further comprises a limiting plate 82 fixed to the end of the top rod 71 away from the needle head 72, a spring 83 is arranged between the limiting plate 82 and the second suture needle 6, the spring 83 is sleeved on the top rod 71, one end of the spring 83 is fixed to the limiting plate 82, and the other end is fixed to the second suture needle 6. In the normal state, the second suture needle 6 is driven by the spring 83 to abut against the second suture needle 6.

[0046] The side of the second suture needle 6 close to the needle head 72 is provided with two second accommodating grooves 61, the two second accommodating grooves 61 are located on both sides of the top rod 71, and a second wire groove 62 is further arranged on the second suture needle 6, the second wire groove 62 corresponds to the second accommodating groove 61 one by one and is in communication.

[0047] The implementation principle of the embodiment 3 of the application is that when the needle head 72 clamps the middle part of the second fixing member 2 through the clamping groove, the limiting block 81 makes the second fixing member 2 not separate from the needle head 72 to the top rod 71, the two ends of the second fixing member 2 are inserted into the second accommodating groove 61 respectively, and the suture line 3 is located in the second wire groove 62; after the needle head 72 passes through the meniscus, the limiting plate 82 is pushed, the limiting block 81 pushes the second fixing member 2 away from the second suture needle 6, the second fixing member 2 separates from the second accommodating groove 61, the pressure applied to the limiting plate 82 is stopped, the spring 83 pushes the limiting plate 82 away from the second suture needle 6, and the needle head 72 returns to the original position at the same time, so that the needle head 72 quickly separates from the second fixing member 2.

[0048] Embodiment 4: a suture fixation method, comprising the following steps:

[0049] S1: preparing the fixator, the suture 3 is sequentially threaded through the positioning holes 4 on the first fixing member 1 and the second fixing member 2;

[0050] S2: the fixator is installed into the implantation device, the first fixing member 1 is inserted into the first accommodating groove 51, the top pin 7 abuts against the middle part of the second fixing member 2, the second fixing member 2 is folded, the two ends of the second fixing member 2 abut against the two sides of the second suture needle 6 respectively, the suture 3 is distributed along the first guide groove 52 and the second guide groove, and the suture 3 is threaded through one end of the second fixing member 2 and loops outside the suture 3 between the first fixing member 1 and the second fixing member 2, forming a slip knot;

[0051] S3: the first suture needle 5 and the second suture needle 6 are both threaded through the meniscus, the first fixing member 1 and the second fixing member 2 are located on the same side of the meniscus, and are separated from the first suture needle 5 and the second suture needle 6, the suture 3 between the first fixing member 1 and the second fixing member 2 is located on the other side of the meniscus, the first suture needle 5 and the second suture needle 6 are separated from the meniscus, and the meniscus is sutured by pulling the end of the suture 3.

[0052] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An implant device applied to a full suture meniscal fixation device, characterized by, The meniscus fixator comprises a first fixing part (1) and a second fixing part (2), the first fixing part (1) is provided with a positioning hole (4) in the middle, the second fixing part (2) is provided with the same positioning hole (4) at both ends, one side of the first fixing part (1) is provided with an integral suture (3), one end of the suture (3) away from the first fixing part (1) passes through the positioning hole (4) on the first fixing part (1) and the two positioning holes (4) on the second fixing part (2) in sequence, and is wound around the suture (3) between the first fixing part (1) and the second fixing part (2); The implanting device comprises a first suture needle (5) and a second suture needle (6), the first suture needle (5) is provided with a first wire slot (52) parallel to the first suture needle (5), the end face of the end of the first suture needle (5) is provided with a first containing slot (51) in communication with the first wire slot (52), the first fixing part (1) is inserted into the first containing slot (51), the end of the second suture needle (6) is provided with a center needle (7) coaxial with the second suture needle (6), and the center needle (7) abuts against the center of the second fixing part (2); The second suture needle (6) is provided with two second wire slots (62) parallel to the second suture needle (6), the end face of the second suture needle (6) is provided with a second containing slot (61) in communication with the second wire slot (62), and the two second containing slots (61) are located on both sides of the center needle (7); The second suture needle (6) is provided with a guide hole (63), one end of the center needle (7) penetrates through the second suture needle (6) through the guide hole (63) and is in sliding connection with the second suture needle (6), and a limiting component (8) for controlling the movement range of the center needle (7) is arranged between the center needle (7) and the second suture needle (6); The limiting component (8) comprises a limiting block (81), the limiting block (81) is arranged at one end of the center needle (7) close to the second containing slot (61), and the diameter of the limiting block (81) is greater than that of the guide hole (63), one end of the center needle (7) away from the second suture needle (6) is provided with a limiting plate (82), and a spring (83) is arranged between the limiting plate (82) and the second suture needle (6).

2. An implant device according to claim 1, wherein, The first fixing part (1) is provided in a triangular shape, a rectangular shape or a semicircular shape, the second fixing part (2) is provided in a dumbbell shape, a rectangular shape or a circular shape.

3. An implant device according to claim 1, wherein, The first fixing part (1), the second fixing part (2) and the suture (3) are all made of ultra-high molecular weight polyethylene.

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