Ligament fixing nail capable of absorbing and grafting bone

Abstract

The utility model discloses a ligament fixing nail capable of absorbing and grafting bones, which comprises a ligament fixing nail, a bone grafting hole is formed in the connecting end of the nail body, and the bone grafting hole extends to the nail body; the spiral wing is arranged on the peripheral surface of the nail body; the through holes are formed in the nail body, the through holes and the spiral wings are arranged in a staggered mode, and the through holes are communicated with the bone grafting hole. The ligament fixing nail is made of an absorbable high-molecular polymer material, the spiral wing is arranged so that the ligament fixing nail can be screwed into a preset part, and after the ligament fixing nail is screwed and fixed, an artificial bone is implanted into the bone grafting hole and fused with an autogenous bone of the preset part through the through holes in the nail body. In the absorption and degradation process of the ligament fixing screw, the artificial bone and the autogenous bone are always in a fusion state, so that the connection strength of the ligament fixing screw is ensured, and the healing period is also shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ligament fixation nail, specifically a kind of ligament fixation nail of absorbable bone grafting. BACKGROUND

[0002] Absorbable ligament fixation screw is a kind of medical instrument specially used in sports medical operation to fix tendon ligament graft, which is made of absorbable high molecular polymer, does not need secondary operation to remove, but the mechanical strength is low, can be absorbed by human body, slowly degrades in body, gradually reduces in strength, and finally degrades into carbon dioxide and water. Since the inner hole part also needs to heal slowly after screw degradation is completed, the treatment cycle is very long. SUMMARY

[0003] The utility model solves the technical problems that: the utility model provides a kind of ligament fixation nail of absorbable bone grafting, to solve the problem that since the inner hole part also needs to heal slowly after screw degradation is completed, the treatment cycle is very long.

[0004] The utility model solves the technical problems that: a kind of ligament fixation nail of absorbable bone grafting, including ligament fixation nail, ligament fixation nail includes: connecting end;Nail body, connecting end is equipped with bone grafting hole, and bone grafting hole is extended to nail body;Spiral wing, spiral wing is arranged on the outer circumferential surface of nail body;Multiple through holes, multiple through holes are arranged in nail body, through hole is set apart from spiral wing, and through hole is communicated with bone grafting hole.

[0005] The utility model has the advantages that: ligament fixation nail is made of absorbable high molecular polymer material, spiral wing is arranged to make ligament fixation nail can be rotated into preset part, after being rotated and fixed, artificial bone is implanted in bone grafting hole, and through multiple through holes on nail body, the autologous bone of preset part is fused.In the absorption and degradation process of ligament fixation screw, artificial bone and autologous bone always ensure fusion state, ensure the connection strength of ligament fixation nail, also shorten healing period.

[0006] Preferably, the ligament fixation nail further comprises:

[0007] Connecting groove is arranged in connecting end, and connecting groove is communicated with bone grafting hole.

[0008] Preferably, it further comprises:

[0009] Screw piece, screw piece is adapted to connecting groove.

[0010] Preferably, the cross-sectional shape of the connecting groove is one of cross-shaped, linear, plum blossom-shaped or internal hexagonal.

[0011] Preferably, it further comprises:

[0012] Screw head, screw head is connected to screw piece.

[0013] Preferably, an abutment surface is provided inside the bone graft hole, and the abutment surface abuts against the screwing member to limit the insertion depth of the screwing member. Attached Figure Description

[0014] Fig. 1 A schematic diagram of the structure of an absorbable and bone-graftable ligament fixation nail;

[0015] Fig. 2 A cross-sectional view of an absorbable and bone-graftable ligament fixation nail;

[0016] Fig. 3 A schematic diagram of an absorbable and bone-graftable ligament fixation nail for connecting screw-in components.

[0017] In the diagram: 1. Connecting end; 2. Nail body; 3. Connecting groove; 4. Spiral wing; 5. Through hole; 6. Bone graft hole; 7. Abutment surface; 8. Tightening head; 9. Tightening component. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] In this document, terms such as "upper," "lower," "inner," and "outer" are established based on the positional relationships shown in the accompanying drawings. Depending on the drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection. Moreover, relational terms such as "first" and "second" are only used to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0020] Example

[0021] like Figs. 1-3 As shown, an absorbable ligament fixation nail capable of bone grafting includes: a connecting end 1; a nail body 2, wherein the connecting end 1 has a bone grafting hole 6, and the bone grafting hole 6 extends to the nail body 2; a spiral wing 4, which is disposed on the outer peripheral surface of the nail body 2; and a plurality of through holes 5, which are disposed on the nail body 2, the through holes 5 being offset from the spiral wing 4, and the through holes 5 communicating with the bone grafting hole 6.

[0022] Specifically, the ligament fixation screw is made of absorbable polymer material and features a spiral wing 4 to allow it to be screwed into a predetermined location. After screwing and fixing, artificial bone is implanted into the bone graft hole 6 and fuses with the autologous bone at the predetermined location through multiple through holes 5 on the screw body 2. During the absorption and degradation process of the ligament fixation screw, the artificial bone and autologous bone maintain a fused state, ensuring the connection strength of the ligament fixation screw and shortening the healing period.

[0023] In detail, the through hole 5 is arranged in the gap of the helical wing 4 without interfering with the device of the helical wing 4, avoiding reducing the strength of the ligament fixation nail, the through hole 5 is provided with a plurality of through holes 5, and the through holes 5 are preferably helically spaced apart on the nail body 2.

[0024] Further, the ligament fixation nail further comprises a connecting groove 3 provided on the connecting end 1, and the connecting groove 3 is communicated with the bone graft hole 6. The connecting groove 3 is used to drive the rotation of the ligament fixation nail, so as to facilitate the rotation of the ligament fixation nail into the predetermined position.

[0025] Further, it further comprises a screwing part 9 matched with the connecting groove 3. The screwing part 9 is used to drive the rotation of the ligament fixation nail.

[0026] Further, the cross-sectional shape of the connecting groove 3 is one of cross-shaped, one-shaped, plum blossom-shaped or internal hexagonal. Preferably, the connecting groove 3 is cross-shaped, and the bone graft hole 6 is a cross-shaped inner hole with the same cross-sectional size as the connecting groove 3.

[0027] Further, it further comprises a screw head 8 connected with the screwing part 9. The screw head 8 is used to drive the rotation of the screwing part 9, so as to facilitate the reduction of the screwing difficulty.

[0028] Further, the bone graft hole 6 is provided with an abutting surface 7 abutting with the screwing part 9 to limit the extension depth of the screwing part 9, and the abutting surface 7 can also limit the extension depth of the artificial bone.

[0029] The above technical features can be combined in any way. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

Claims

1. An absorbable osteoimplantable ligament fixation peg comprising a ligament fixation peg, characterized in that, The ligament fixation nail comprises: a connecting end (1); a nail body (2), the connecting end (1) is provided with a bone graft hole (6), and the bone graft hole (6) extends to the nail body (2); a spiral wing (4) arranged on the outer circumferential surface of the nail body (2); a plurality of through holes (5) arranged on the nail body (2), the through holes (5) are arranged in a staggered manner with the spiral wing (4), and the through holes (5) communicate with the bone graft hole (6).

2. The absorbable osteoimplantable ligament fixation pin of claim 1, wherein, The ligament fixation nail further comprises: a connecting groove (3) arranged on the connecting end (1), and the connecting groove (3) communicates with the bone graft hole (6).

3. The absorbable osteoimplantable ligament fixation pin of claim 2, wherein, Further comprising: a screwing part (9) adapted to the connecting groove (3).

4. The absorbable osteoimplantable ligament fixation pin of claim 2, wherein, The cross-sectional shape of the connecting groove (3) is one of cross shape, single line shape, plum blossom shape or internal hexagonal shape.

5. The absorbable osteoimplantable ligament fixation pin of Claim 3, wherein, Further comprising: a screwing head (8) connected to the screwing part (9).

6. The absorbable osteoimplantable ligament fixation pin of Claim 3, wherein, An abutting surface (7) is arranged in the bone graft hole (6), and the abutting surface (7) abuts against the screwing part (9) to limit the insertion depth of the screwing part (9).

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