Anchor assembly for ligament repair

Abstract

The utility model relates to a ground anchor assembly for ligament repair, and relates to the technical field of ground anchor assemblies, the ground anchor assembly for ligament repair comprises a ground anchor body and a fixing part used for fixing the ground anchor body, and the fixing part sleeves the ground anchor body and is provided with a plurality of positioning teeth inserted into a ligament for positioning. The anchor body is sleeved with the fixing piece, the anchor body is in threaded connection to the bone, the fixing piece is extruded to the ligament, the positioning teeth are inserted into the ligament for positioning, and therefore the contact area of the anchor and the ligament is increased, the probability that the anchor body is loosened due to rotation is reduced, and the fixing effect in an operation is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of anchor assemblies, in particular to an anchor assembly for ligament repair. BACKGROUND

[0002] In the medical field, ligament repair is a common surgical operation, especially in sports medicine. Due to the special needs of people such as athletes, higher requirements are placed on the efficiency and stability of ligament repair.

[0003] At present, in the ligament repair surgery, the anchor structure commonly used mainly includes a shank and a fixing structure arranged on the shank to ensure that the anchor can be firmly fixed in the tissue. The commonly used fixing structures are screw type, barb type or direct compression type, which realize the fixing effect of the anchor in the tissue in different ways.

[0004] However, the fixing structure of the above-mentioned traditional anchor has some deficiencies. The existing fixing structure is relatively single, so it cannot provide sufficient stability when fixing the ligament, affecting the surgical effect and patient recovery. In particular, when fixing the ligament with large tension or frequent activity, the single fixing structure is easy to cause the anchor to loosen or even fall off, thereby reducing the success rate and reliability of ligament repair. Therefore, there is an urgent need for an anchor for ligament repair to improve the fixing effect in surgery. CONTENT OF THE INVENTION

[0005] In order to improve the fixing effect in surgery, the application provides an anchor assembly for ligament repair.

[0006] The anchor assembly for ligament repair provided by the application adopts the following technical scheme:

[0007] An anchor assembly for ligament repair, comprising an anchor body and a fixing member for fixing the anchor body, the fixing member being sleeved on the anchor body and being provided with a plurality of positioning teeth for positioning in the ligament.

[0008] By adopting the above technical scheme, the fixing member is sleeved on the anchor body, the anchor body is threadedly connected to the bone, the fixing member is extruded onto the ligament, and the positioning teeth are inserted into the ligament for positioning, so as to increase the contact area between the anchor and the ligament, and also reduce the probability of loosening of the anchor body due to rotation, thereby greatly improving the fixing effect in surgery.

[0009] Optionally, the fixing member is provided with a plurality of fixing holes for the surgical thread to pass through.

[0010] By adopting the above technical scheme, when the surgical thread needs to suture the ligament, the surgical thread can pass through the fixing hole for suturing, so the fixing member and the surgical thread can cooperate with each other for positioning, thereby further improving the fixing effect on the ligament and the fixing effect in the operation.

[0011] Optionally, the plurality of positioning teeth are arranged in a staggered manner with the plurality of fixing holes.

[0012] By adopting the above technical scheme, the positioning teeth and the fixing holes are arranged in a staggered manner, so that the surgical thread can avoid contacting the positioning teeth as much as possible when passing through the fixing hole, thereby reducing the probability of damage of the surgical thread caused by the positioning teeth and improving the fixing effect in the operation.

[0013] Optionally, an arc portion is formed between the two adjacent positioning teeth, the arc portion is arranged in correspondence with the fixing hole and is used for passing the surgical thread.

[0014] By adopting the above technical scheme, after the fixing member is fixed, the arc portion can press the surgical thread against the ligament for positioning, thereby reducing the probability of damage of the surgical thread caused by the contact between the positioning teeth and the surgical thread, allowing the surgical thread to be arranged according to the design requirements, and further improving the fixing effect in the operation.

[0015] Optionally, a boss in a conical tube shape is arranged on the fixing member and is sleeved on the anchor body, and a positioning portion is arranged on the anchor body and is sunk into the boss and abuts against the inner wall of the boss for positioning.

[0016] By adopting the above technical scheme, when the fixing member is fixed, the boss is also pressed against the ligament for positioning, thereby further improving the fixing effect of the fixing member, the positioning portion is pressed against the boss, thereby improving the fixing effect of the anchor body on the fixing member, and the fixing effect in the operation is improved.

[0017] Optionally, the boss protrudes downward from the fixing member and has a diameter larger at one end close to the fixing member than at one end away from the fixing member.

[0018] By adopting the above technical scheme, the boss protrudes from the fixing member, thereby increasing the contact area of the boss and the positioning portion without increasing the thickness of the fixing member, thereby further improving the positioning effect of the positioning portion, the diameter of the boss is smaller at one end away from the fixing member, thereby facilitating the insertion of the boss into the ligament or pressing against the ligament, further improving the fixing effect of the anchor body on the fixing member, and the fixing effect in the operation is improved.

[0019] Optionally, a sharp end is arranged on the positioning tooth for facilitating the insertion into the ligament.

[0020] By adopting the above technical scheme, the positioning tooth is facilitated to be inserted into the ligament, thereby further improving the fixing effect in the operation.

[0021] Optionally, the fixing member is disc-shaped, and the plurality of positioning teeth are arranged circumferentially around the fixing member axis and connected to form a circular-arc-shaped connecting surface.

[0022] By adopting the above technical solution, the fixing member is disc-shaped, so that the plurality of positioning teeth are arranged circumferentially around the fixing member axis, and the circular-arc-shaped connecting surface makes the connection between the fixing member and the positioning teeth smoother, thereby reducing the probability of causing injury to the operator when the operator holds the tooth fixing member.

[0023] To sum up, the present application has at least one of the following beneficial technical effects:

[0024] 1. By sleeving the fixing member on the anchor body and threadedly connecting the anchor body to the bone, the fixing member is pressed onto the ligament, and the positioning teeth are inserted into the ligament for positioning, thereby increasing the contact area between the anchor and the ligament and reducing the probability of loosening of the anchor body due to rotation, thereby greatly improving the fixing effect during the operation.

[0025] 2. By suturing through the fixing hole with the surgical thread, the fixing member and the surgical thread can cooperate with each other for positioning, thereby further improving the fixing effect on the ligament and further improving the fixing effect during the operation. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic view of a stereoscopic structure of the anchor assembly for ligament repair;

[0027] Figure 2 is a partial exploded view of the anchor assembly for ligament repair.

[0028] Reference signs: 1, anchor body; 11, positioning portion; 2, fixing member; 21, positioning tooth; 22, boss; 23, fixing hole; 24, circular-arc portion. DETAILED DESCRIPTION

[0029] The following will be described in detail below with reference to the accompanying drawings Figures 1-2 The present application will be further described in detail.

[0030] The present application discloses an anchor assembly for ligament repair.

[0031] Reference will be made to Figure 1 and Figure 2The anchor assembly for ligament repair comprises an anchor body 1 and a fixing member 2 for fixing the anchor body 1, the fixing member 2 is sleeved on the anchor body 1, and the fixing member 2 is in a disc-shaped structure, a plurality of positioning teeth 21 are integrally arranged on the lower surface of the fixing member 2 around the axis of the fixing member 2, the plurality of positioning teeth 21 are located at the outer side wall of the fixing member 2, the connecting surface of the positioning tooth 21 and the fixing member 2 is in an arc shape, and the end of the positioning tooth 21 away from the fixing member 2 forms a sharp end for inserting the ligament, and after the anchor body 1 is threadedly connected to the bone, the plurality of positioning teeth 21 are inserted into the ligament for positioning.

[0032] A boss 22 protruding downward from the lower surface of the fixing member 2 is coaxially and integrally arranged at the center position of the upper surface of the fixing member 2, the boss 22 is in a conical tube shape, and the diameter of the end of the boss 22 close to the fixing member 2 is greater than the diameter of the end of the boss 22 away from the fixing member 2; a fixing hole 23 is arranged on the fixing member 2 between the positioning tooth 21 and the boss 22, the axis of the fixing hole 23 and the fixing member 2 is parallel, and a plurality of fixing holes 23 are arranged in a circular array around the axis of the fixing member 2.

[0033] The plurality of fixing holes 23 and the plurality of positioning teeth 21 are arranged in a staggered manner, an arc-shaped and concave arc part 24 is formed between the adjacent two positioning teeth 21, the plurality of arc parts 24 and the plurality of fixing holes 23 are arranged in a one-to-one correspondence, the fixing hole 23 is for the surgical thread to pass through, and the surgical thread passes through the arc part 24 so that the surgical thread is staggered with the positioning tooth 21, thereby reducing the probability of damage to the surgical thread caused by the positioning tooth 21; after the surgical thread is sutured to the ligament, the surgical thread passes through the fixing hole 23, so that the surgical thread and the fixing hole 23 can cooperate to position, and the surgical thread can also pass through the arc part 24, after the fixing member 2 is fixed, the arc part 24 can also press the surgical thread on the ligament for positioning.

[0034] The anchor body 1 is coaxially threaded to the bone through the boss 22 for positioning, and a positioning part 11 is coaxially formed on the head of the anchor body 1, the positioning part 11 is sunk into the boss 22 and is in close contact with the inner side wall of the boss 22 for positioning.

[0035] The boss 22 can also be used in cooperation with the anchor head for fixing the surgical thread when the bone is fractured, thereby further improving the fixing effect and the convenience of the operation.

[0036] The working principle of the embodiment of the application is as follows:

[0037] After the anchor nail body 1 is screwed to the bone through the boss 22, the positioning part 11 is pressed against the inner wall of the boss 22 after being rotated, the fixing part 2 is pressed against the ligament, and the plurality of positioning teeth 21 are inserted into the ligament to be fixed; or when surgical suture is needed, the surgical suture is passed through the arc part 24 and the fixing hole 23, so that the fixing part 2 is pressed against the ligament, and then the anchor nail body 1 is screwed to the bone to position the fixing part 2, so that the surgical suture and the fixing part 2 are fixed to each other, thereby reducing the probability of rotation of the anchor nail body 1, greatly improving the fixing effect of the fixing part 2, and improving the fixing effect in the operation.

[0038] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A ligament repair anchor assembly, characterized in that: It comprises an anchor body (1) and a fixing member (2) for fixing the anchor body (1); the fixing member (2) is sleeved on the anchor body (1) and is provided with a plurality of positioning teeth (21) inserted into the ligament for positioning.

2. The ligament repair anchor assembly according to claim 1, characterized in that: The fixing member (2) is provided with a plurality of fixing holes (23) for surgical threads to pass through.

3. The ligament repair anchor assembly according to claim 2, characterized in that: The plurality of positioning teeth (21) and the plurality of fixing holes (23) are arranged in a staggered manner.

4. The ligament repair anchor assembly according to claim 2, characterized in that: An arc portion (24) is formed between two adjacent positioning teeth (21), and the arc portion (24) is arranged corresponding to the fixing hole (23) and is used for the surgical thread to pass through.

5. The ligament repair anchor assembly according to claim 1, characterized in that: The fixing member (2) is provided with a tapered boss (22) sleeved on the anchor body (1), and the anchor body (1) is provided with a positioning portion (11) sunk into the boss (22) and tightly attached to the inner side wall of the boss (22) for positioning.

6. The ligament repair anchor assembly according to claim 5, characterized in that: The boss (22) protrudes downward from the fixing member (2), and the diameter of the end close to the fixing member (2) is larger than the diameter of the end away from the fixing member (2).

7. The ligament repair anchor assembly according to claim 1, characterized in that: The positioning tooth (21) is provided with a tip for facilitating insertion into the ligament.

8. The ligament repair anchor assembly according to claim 1, characterized in that: The fixing member (2) is disc-shaped, and the plurality of positioning teeth (21) are arranged in a circular array around the axis of the fixing member (2), and the connection portions form an arc-shaped connection surface.

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