Non-absorbable locking anchor with line

Abstract

The utility model discloses a non-absorbable locking anchor with a line. The non-absorbable locking anchor comprises a main body structure, the main body structure comprises a nail head, a spiral part and a connecting part used for being connected with an inserter, the spiral part is located between the nail head and the connecting part, a suture hole allowing a suture to pass through is formed in the spiral part, and the connecting part is arranged in a square shape; the anti-falling structure is used for enhancing the fixing capacity of the anchor; the anti-disengaging structure comprises a through hole formed in the connecting part and an anti-disengaging block, the anti-disengaging block is located on the outer wall of the connecting part, the anti-disengaging block is inserted into the connecting part in a sliding mode, and the anti-disengaging block extends out of the through hole of the connecting part through a compression spring. The device is simple in structure and convenient to use, through cooperation of the main body structure and the anti-falling structure, the anchor and the bone tissue are tightly connected for a long time and are not prone to loosening, the tightness degree of connection between the anchor and the bone tissue is improved, and the device has high practical value.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a non-absorbable wire-locking anchor. Background Technology

[0002] A suture-locking anchor is an orthopedic implant that reconnects soft tissue and bone by being inserted into the bone and using a suture attached to its tail. It is primarily used for rotator cuff repair, tendon fixation, and other soft tissue reconstruction surgeries. It is also widely used in orthopedic surgeries such as deltoid fibrocartilage repair, flexor digitorum profundus tendon repair, biceps brachii tendon repair, and ulnar collateral ligament reconstruction.

[0003] A search revealed Chinese patent application CN202210470201.2, which discloses a suture anchor, belonging to the field of medical devices. The suture anchor includes: an anchor body, a threading hole, a drug reservoir, and a drug release hole. The anchor body has a hollow structure and external threads on its outer wall. The threading hole is located at the front end of the anchor body and communicates with its inner cavity. The drug reservoir is axially located on the side wall of the anchor body, with its lower end extending to the end of the anchor body. The drug release hole is radially located on the side wall of the anchor body and communicates with the upper end of the drug reservoir. This suture anchor can delay the drug release rate, improve drug penetration into bone tissue, and promote bone growth.

[0004] The above-mentioned technical solutions still have shortcomings. Relying solely on threads for anchoring can easily lead to loosening when fixing soft tissues. Due to the complexity of bone structure and the fact that it will bear forces in different directions during the patient's postoperative activities, it cannot adapt well to this complex stress situation. As a result, the connection stability between the anchor and bone tissue decreases after a period of time. Therefore, we need to propose a non-absorbable suture locking anchor. Utility Model Content

[0005] The purpose of this invention is to provide a non-absorbable wire-locking anchor. This device has a simple structure and is easy to use. Through the cooperation of the main structure and the anti-loosening structure, the anchor is tightly connected to the bone tissue for a long time and is not easy to loosen. This improves the tightness of the connection between the anchor and the bone tissue and has high practical value, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A non-absorbable wire-locking anchor, comprising:

[0008] Main structure;

[0009] The main structure includes a nail head, a spiral part, and a connecting part for connecting an inserter. The spiral part is located between the nail head and the connecting part, and a thread hole for the sewing thread to pass through is provided on the spiral part. The connecting part is square in shape.

[0010] It also includes an anti-loosening structure to enhance the anchor's fixing ability;

[0011] The anti-detachment structure includes a through hole and an anti-detachment block on the connecting part. The anti-detachment block is located on the outer wall of the connecting part and is slidably inserted into the connecting part. The anti-detachment block protrudes from the through hole of the connecting part by a compression spring.

[0012] Preferably, the wire hole includes a first wire hole and a second wire hole, and a wire groove is provided between the ports of the first wire hole and the second wire hole.

[0013] Preferably, the through hole is square and coaxially arranged with the connecting part, and the through hole is connected to the second wire hole.

[0014] Preferably, the connecting part has a rectangular notch for the anti-detachment block to pass through, and the shape of the anti-detachment block is adapted to the notch.

[0015] Preferably, the anti-detachment block has an inclined surface on the side facing the inserter, and a limiting block is provided at one end of the anti-detachment block inside the through hole, with a first protrusion provided at the center of the side of the limiting block.

[0016] Preferably, a first baffle is provided inside the through hole of the connecting part, and a second protrusion is provided at the center of both sides of the first baffle. The compression spring is located between the first protrusion and the second protrusion, and the first protrusion and the second protrusion are respectively inserted into the two end rings of the compression spring.

[0017] Preferably, a second baffle is further provided inside the through hole. The second baffle is perpendicular to the first baffle, and one side of the second baffle is tapered. The second baffle is used to prevent the stitching from contacting and wrapping around the compression spring.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model features a main structure comprising a nail head, a spiral section, and a connecting section. The spiral section has a wire hole and an anti-loosening structure including a through hole and an anti-loosening block. The anti-loosening block uses a compression spring to rebound and improve the anchoring ability. This device has a simple structure and is easy to use. Through the cooperation of the main structure and the anti-loosening structure, the anchor nail is tightly connected to the bone tissue for a long time and is not easy to loosen. This improves the tightness of the connection between the anchor and the bone tissue and has high practical value. Attached Figure Description

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the connecting part of this utility model;

[0022] Figure 3 This is a schematic diagram of the notch structure of this utility model.

[0023] In the diagram: 1. Nail head; 2. Spiral part; 3. Connecting part; 4. First wire hole; 5. Second wire hole; 6. Through hole; 7. Anti-detachment block; 8. Inclined surface; 9. First protrusion; 10. First baffle; 11. Second protrusion; 12. Compression spring; 13. Second baffle; 14. Notch; 15. Wire groove; 16. Limiting block. Detailed Implementation

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Please see Figure 1-3 This utility model provides a technical solution:

[0026] A non-absorbable wire-locking anchor, comprising:

[0027] Main structure; The main structure includes a nail head 1, a spiral part 2 and a connecting part 3 for connecting the inserter. The spiral part 2 is located between the nail head 1 and the connecting part 3. The spiral part 2 has a thread hole for the sewing thread to pass through. The connecting part 3 is square in shape. The thread hole includes a first thread hole 4 and a second thread hole 5. A thread groove 15 is provided between the ports of the first thread hole 4 and the second thread hole 5.

[0028] It also includes an anti-detachment structure to enhance the anchor's fixing ability; the anti-detachment structure includes a through hole 6 and an anti-detachment block 7 on the connecting part 3. The anti-detachment block 7 is located on the outer wall of the connecting part 3 and is slidably inserted into the connecting part 3. The anti-detachment block 7 protrudes from the through hole 6 of the connecting part 3 through a compression spring 12. The through hole 6 is square and coaxial with the connecting part 3, and the through hole 6 communicates with the second wire hole 5.

[0029] The connecting part 3 has a rectangular notch 14 for the anti-detachment block 7 to pass through, and the shape of the anti-detachment block 7 is adapted to the notch 14. The side of the anti-detachment block 7 facing the inserter has a bevel 8. A limit block 16 is provided at one end of the anti-detachment block 7 inside the through hole 6, and a first protrusion 9 is provided at the center of the side of the limit block 16. A first baffle 10 is provided inside the through hole 6 of the connecting part 3. A second protrusion 11 is provided at the center of both sides of the first baffle 10. The compression spring 12 is located between the first protrusion 9 and the second protrusion 11, and the first protrusion 9 and the second protrusion 11 are respectively inserted into the two end rings of the compression spring 12.

[0030] This utility model features a main structure comprising a nail head 1, a spiral part 2, and a connecting part 3. The spiral part 2 has a thread hole and an anti-dislodgement structure including a through hole 6 and an anti-dislodgement block 7. The anti-dislodgement block 7 improves the anchoring ability by rebounding through a compression spring 12. In actual use, the suture is passed through the first through hole 6 and then along the thread groove 15 into the second thread hole 5. It is then passed through the through hole 6 into the inserter handle from the connecting part 3. Since the connecting part 3 is square, after drilling a hole in the bone, it can be rotated by the inserter that is compatible with the connector head, thereby screwing the main body with the threaded part into the bone hole. Then, the suture can be connected.

[0031] During this process, when the inserter end with the square connecting groove is combined with the connecting part 3, the anti-dislodgement block 7 retracts into the through hole 6 under the action of the compression spring 12. When the anchor is screwed into the bone hole, the inserter disengages from the connecting part 3. Under the action of the compression spring 12, the anti-dislodgement block 7 extends out and presses against the inner wall of the bone hole, thereby cooperating with the threaded part to achieve a double positioning function, making it difficult for the anchor to loosen and fall off.

[0032] In summary, this device has a simple structure and is easy to use. Through the cooperation of the main structure and the anti-loosening structure, the anchor is tightly connected to the bone tissue for a long time and is not easy to loosen. This improves the tightness of the connection between the anchor and the bone tissue and has high practical value.

[0033] Additionally, please see Figure 2-3 :

[0034] A second baffle 13 is also provided inside the through hole 6. The second baffle 13 is perpendicular to the first baffle 10. One side of the second baffle 13 is tapered. The second baffle 13 is used to prevent the stitching from contacting and wrapping around the compression spring 12.

[0035] When the stitches are connected through the through hole 6, the second baffle 13 can separate the two threads to prevent them from getting tangled together, and can also shield the compression spring 12 to prevent the threads from contacting or getting tangled on the compression spring 12.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A non-absorbable wire-locking anchor, characterized in that, include: Main structure; The main structure includes a nail head (1), a spiral part (2) and a connecting part (3) for connecting an inserter. The spiral part (2) is located between the nail head (1) and the connecting part (3). The spiral part (2) has a thread hole for the sewing thread to pass through. The connecting part (3) is square in shape. It also includes an anti-loosening structure to enhance the anchor's fixing ability; The anti-detachment structure includes a through hole (6) and an anti-detachment block (7) on the connecting part (3). The anti-detachment block (7) is located on the outer wall of the connecting part (3) and is slidably inserted into the connecting part (3). The anti-detachment block (7) protrudes from the through hole (6) of the connecting part (3) through a compression spring (12).

2. The non-absorbable wire-locking anchor according to claim 1, characterized in that: The wire hole includes a first wire hole (4) and a second wire hole (5), and a wire groove (15) is provided between the ports of the first wire hole (4) and the second wire hole (5).

3. The non-absorbable wire-locking anchor bolt according to claim 1, characterized in that: The through hole (6) is a square shape coaxial with the connecting part (3), and the through hole (6) is connected to the second wire hole (5).

4. The non-absorbable wire-locking anchor according to claim 1, characterized in that: The connecting part (3) has a rectangular notch (14) for the anti-detachment block (7) to pass through, and the shape of the anti-detachment block (7) is adapted to the notch (14).

5. A non-absorbable wire-locking anchor as described in claim 1, characterized in that: The anti-detachment block (7) has a bevel (8) on the side facing the inserter. A limit block (16) is provided at one end of the anti-detachment block (7) inside the through hole (6). A first protrusion (9) is provided at the center of the side of the limit block (16).

6. A non-absorbable locking anchor with a wire according to claim 5, characterized in that: The connecting part (3) has a first baffle (10) inside the through hole (6). The center of both sides of the first baffle (10) is provided with a second protrusion (11). The compression spring (12) is located between the first protrusion (9) and the second protrusion (11), and the first protrusion (9) and the second protrusion (11) are respectively inserted into the two end rings of the compression spring (12).

7. A non-absorbable wire-locking anchor as described in claim 6, characterized in that: The through hole (6) is also provided with a second baffle (13). The second baffle (13) and the first baffle (10) are arranged vertically. One side of the second baffle (13) is tapered. The second baffle (13) is used to prevent the stitching from contacting and wrapping around the compression spring (12).

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