Alveolar bone defect repairing bone nail

Abstract

The utility model relates to the field of dental auxiliary tools, and discloses an alveolar bone defect repair bone nail, which comprises a nail body, a locking mechanism and a multi-pitch thread mechanism, the locking mechanism comprises a connecting rod and a connecting groove which are fixedly installed at a connecting opening in the middle of the nail body, threads b are arranged on the outer side wall of the connecting rod, a locking ring is fixedly installed at the upper end of the connecting rod, threads c correspondingly connected with the threads b are arranged on the inner side wall of the connecting groove, and an annular groove correspondingly connected with the locking ring in a sleeved mode is formed in the inner bottom wall of the connecting groove. The multi-pitch thread mechanism comprises a thread a and a crest which are arranged on the side wall of the screw body. According to the alveolar bone defect repairing bone nail, the design that the nail body is divided into the upper part and the lower part which are connected through the locking mechanism and the multi-pitch thread mechanism is adopted; the adaptability of the operation is effectively improved, the risk of loosening of the bone nail after the operation is reduced, and the repairing effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of dental auxiliary appliances, in particular to an alveolar bone defect repair bone nail. Background Art

[0002] In the clinical treatment environment of alveolar bone defect repair, it is crucial to ensure the adaptability and stability of the bone nail. However, there are some problems in the existing technologies:

[0003] Firstly, the traditional alveolar bone defect repair bone nail has poor adjustability in length and cannot adapt to patients of different ages and different needs. This results in the need to prepare bone nails of various specifications during the operation.

[0004] Secondly, when the existing bone nail design enters the alveolar bone, it is prone to problems such as being not smooth, and the stability after fixation is also not ideal enough. This situation may lead to the loosening of the bone nail after the operation, affecting the repair effect, and even requiring a second operation for adjustment.

[0005] Therefore, there is an urgent need to design an alveolar bone defect repair bone nail that can solve the above technical problems. Content of the Utility Model

[0006] Aiming at the problems mentioned in the background art, the purpose of the utility model is to provide an alveolar bone defect repair bone nail to solve the problems mentioned in the background art.

[0007] To achieve the above purpose, the utility model mainly provides the following technical solutions:

[0008] An alveolar bone defect repair bone nail, including a nail body, further including:

[0009] A locking mechanism and a multi-pitch thread mechanism; wherein:

[0010] The locking mechanism includes a connecting rod and a connecting groove fixedly installed at the connection port in the middle of the nail body. The outer side wall of the connecting rod is provided with thread b, the upper end is fixedly installed with a locking ring, the inner side wall of the connecting groove is provided with a thread c corresponding to and connected with thread b, and the inner bottom wall is provided with an annular groove corresponding to and sleeved with the locking ring;

[0011] The multi-pitch thread mechanism includes thread a and a tooth crest arranged on the side wall of the nail body.

[0012] Further, the nail body is divided into upper and lower parts and is connected by a connecting rod and a connecting groove.

[0013] Further, the tooth crest further includes tooth crest a, tooth crest b and tooth crest c, and the pitch gradually becomes larger from the nail tip to the nail head direction.

[0014] Further, a nail head is fixedly installed at the upper end of the nail body, and a nail tip is fixedly installed at the lower end. A screw thread groove and an inner guide groove are opened at the upper end of the nail head, and the inner guide groove penetrates through the nail body to the inside of the nail tip.

[0015] Further, the screw thread groove includes a hexagonal groove, a cross groove and a flat groove. The hexagonal groove is opened at the top of the nail head, and the cross groove is opened at the bottom wall of the hexagonal groove and includes the flat groove.

[0016] Further, reverse teeth are fixedly installed around the thread on the outer side wall of the middle and lower parts of the nail body.

[0017] Further, outer through holes are opened around the thread on the outer side wall of the lower part of the nail body and around the nail tip. The outer through holes penetrate through the side walls of the nail body and the nail tip and communicate with the inner guide groove, and fixing grooves are opened around the outer side wall of the nail tip.

[0018] Further, the materials of the nail body, the nail head and the nail tip are high-strength titanium alloy or other metal materials with excellent biocompatibility.

[0019] Compared with the prior art, the beneficial effects produced by the present utility model are mainly reflected in:

[0020] First of all, compared with the traditional alveolar bone defect repair bone nails with a fixed length design, they cannot adapt to patients of different ages or different needs. To solve this problem, an alveolar bone defect repair bone nail of the present utility model adopts a design in which the nail body is divided into two parts and connected by a locking mechanism. Through the design of adjustable length, the length of the bone nail can be flexibly adjusted to meet the needs of different patients, effectively improving the adaptability of the operation.

[0021] Secondly, compared with the traditional alveolar bone defect repair bone nails, it is easy to be unsmooth when entering the alveolar bone and has poor stability after fixation. To solve this problem, an alveolar bone defect repair bone nail of the present utility model adopts a design of a multi-pitch thread mechanism. Through the design of gradually changing pitch, it is ensured that the bone nail can smoothly enter the alveolar bone and provide higher stability after fixation, effectively reducing the risk of postoperative bone nail loosening and improving the repair effect.

[0022] The above description is only an overview of the technical solution of the present utility model. In order to clearly understand the technical means of the present utility model and implement it according to the content of the specification, the following preferred embodiments of the present utility model are described in detail in conjunction with the drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0024] Figure 1 The front view of a bone screw for repairing alveolar bone defect of the present invention;

[0025] Figure 2 The top view of a bone screw for repairing alveolar bone defect of the present invention;

[0026] Figure 3 The front view of the locking mechanism of the present invention;

[0027] Figure 4 The structure diagram of a bone screw for repairing alveolar bone defect of the present invention;

[0028] Figure 5 The structure diagram of the reverse teeth and through holes of the present invention;

[0029] Figure 6 The front view of Embodiment 1 and Embodiment 2 of the present invention;

[0030] Explanation of reference numerals:

[0031] 1. Nail head; 2. Nail body; 3. Nail tip; 4. Multi-pitch thread mechanism;

[0032] 11. Threaded groove; 12. Inner guide groove;

[0033] 21. Thread a; 22. Tooth crest; 23. Connection port; 24. Locking mechanism; 25. Reverse teeth; 26. Outer through hole;

[0034] 111. Hexagonal groove; 112. Cross groove; 113. Flat groove;

[0035] 221. Tooth crest a; 222. Tooth crest b; 223. Tooth crest c;

[0036] 241. Connecting rod; 242. Thread b; 243. Locking ring; 244. Connection groove; 245. Thread c; 246. Annular groove;

[0037] 31. Fixed groove; Detailed implementation manners

[0038] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than limiting the utility model. In addition, it should be noted that for the sake of convenience of description, only the parts related to the utility model are shown in the drawings.

[0039] As Figure 1-6 shown, a bone nail for repairing alveolar bone defect of the present utility model includes a nail body 2, and further includes:

[0040] a locking mechanism 24 and a multi-pitch thread mechanism 4; wherein:

[0041] The locking mechanism 24 includes a connecting rod 241 and a connecting groove 244 fixedly installed at a connecting port 23 in the middle of the nail body 2. The connecting rod 241 and the connecting groove 244 have the same height to ensure the tight connection of the nail body 2. A thread b242 is provided on the outer side wall of the connecting rod 241, and a locking ring 243 is fixedly installed at the upper end. A thread c245 corresponding to the thread b242 is provided on the inner side wall of the connecting groove 244, and an annular groove 246 corresponding to the locking ring 243 is provided on the inner bottom wall. The cooperation of the thread b242 and the thread c245 ensures the stability of the connection, and the cooperation of the locking ring 243 and the annular groove 246 ensures the firmness of the connection;

[0042] The multi-pitch thread mechanism 4 includes a thread a21 and a tooth crest 22 provided on the side wall of the nail body 2. The thread a21 is designed as a multi-pitch structure to ensure that the bone nail can smoothly enter and be stably fixed in the alveolar bone.

[0043] Embodiment 1

[0044] As Figure 3 shown, in this embodiment, the nail body 2 is divided into upper and lower parts, which is convenient to replace the upper end of the nail body 2 with different specifications according to different needs. It is connected through the connecting rod 241 and the connecting groove 244 to ensure the stability of the bone nail.

[0045] Embodiment 2

[0046] As Figure 6 shown, in this embodiment, the upper part of the nail body 2 includes two specifications, a short nail body 2 and a long nail body 2, so as to be selected according to the bone conditions of different patients. The short nail body 2 is suitable for young patients or patients with higher bone density to ensure the comfort and stability of installation, while the long nail body 2 is suitable for patients with lower bone density or more fragile bones to provide better support effect.

[0047] As Figure 1As shown, in this embodiment, the tooth crest 22 further includes tooth crest a221, tooth crest b222, and tooth crest c223. The pitch gradually increases in the direction from the tip 3 to the head 1 of the nail. The pitch increases gradually from the lower end to the upper end of the nail body 2, causing the thickness of the tooth crest 22 to also gradually increase. The smaller pitch at the lower end corresponds to the thinner tooth crest a221, which helps guide the bone nail smoothly into the alveolar bone. The moderate pitch in the middle corresponds to the slightly thicker tooth crest b222 to provide a smooth screwing-in process and increase the stability of the initial fixation. The larger pitch at the upper part corresponds to the thickest tooth crest c223 to increase the stability after the final fixation.

[0048] As Figure 4 shown, in this embodiment, the upper end of the nail body 2 is fixedly installed with the head 1, and the lower end is fixedly installed with the tip 3. A screw groove 11 and an inner guide groove 12 are opened at the upper end of the head 1. The screw groove 11 is used for installation and disassembly and includes various types of grooves. The inner guide groove 12 runs through the nail body 2 to the inside of the tip 3. The inner guide groove 12 is used to deliver drugs or other therapeutic substances, acting directly on the defect site to promote dental bone healing.

[0049] As Figure 2 shown, in this embodiment, the screw groove 11 includes a hexagonal groove 111, a cross groove 112, and a flat groove 113. The hexagonal groove 111 is opened at the top of the head 1. A cross groove 112 is opened at the bottom wall of the hexagonal groove 111 and includes a flat groove 113. The design of various grooves is suitable for different tool operations, facilitating installation and disassembly.

[0050] As Figure 5 shown, in this embodiment, reverse teeth 25 are fixedly installed around the thread on the outer side wall of the middle and lower parts of the nail body 2. The design of the reverse teeth 25 enhances the anti-slip property of the bone nail and ensures the stability of the bone nail after installation.

[0051] As Figure 5 shown, in this embodiment, outer through holes 26 are opened around the thread on the outer side wall of the lower part of the nail body 2 and around the tip 3. The outer through holes 26 run through the side wall of the nail body 2 and the tip 3 and communicate with the inner guide groove 12. The outer through holes 26, in combination with the inner guide groove 12, directly act on the defect site with drugs to promote dental bone healing. Fixing grooves 31 are opened around the outer side wall of the tip 3. The fixing grooves 31 can not only discharge bone chips during drilling to facilitate screwing in the bone nail, but also increase the contact area with the surrounding bone tissue, enabling the bone to adhere, thereby improving the fixing effect.

[0052] As Figure 1 shown, in this embodiment, the materials of the nail body 2, the head 1, and the tip 3 are high-strength titanium alloy or other metal materials with excellent biocompatibility. This material selection ensures the strength and biocompatibility of the bone nail and reduces the risk of postoperative complications.

[0053] The above describes the present utility model in combination with the embodiments, but the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present utility model.

Claims

1. A bone screw for repairing alveolar bone defects, comprising a screw body (2), characterized in that: Also includes: A locking mechanism (24) and a multi-pitch thread mechanism (4); wherein: The locking mechanism (24) comprises a connecting rod (241) and a connecting groove (244) fixedly mounted at a connecting opening (23) in the middle of the nail body (2); a thread b (242) is arranged on the outer wall of the connecting rod (241); a locking ring (243) is fixedly mounted on the upper end; a thread c (245) correspondingly connected to the thread b (242) is arranged on the inner wall of the connecting groove (244); and an annular groove (246) correspondingly sleeved to the locking ring (243) is arranged on the inner bottom wall; The multi-pitch thread mechanism (4) comprises a thread a (21) and a thread crest (22) arranged on the side wall of the nail body (2).

2. The bone screw for repairing alveolar bone defects according to claim 1, characterized in that: The nail body (2) is divided into two parts, an upper part and an lower part, which are connected by a connecting rod (241) and a connecting groove (244).

3. The bone screw for repairing alveolar bone defects according to claim 1, characterized in that: The tooth top (22) further comprises a tooth top a (221), a tooth top b (222) and a tooth top c (223), and the pitch gradually increases along the direction from the nail tip (3) to the nail head (1).

4. The bone screw for repairing alveolar bone defects according to claim 3, characterized in that: The nail head (1) is fixedly mounted on the upper end of the nail body (2), and the nail tip (3) is fixedly mounted on the lower end. A screw groove (11) and an inner guide groove (12) are provided on the upper end of the nail head (1), and the inner guide groove (12) penetrates the nail body (2) to the inside of the nail tip (3).

5. The bone screw for repairing alveolar bone defects according to claim 4, characterized in that: The screw groove (11) comprises a hexagonal groove (111), a cross groove (112) and a flat groove (113); the hexagonal groove (111) is provided on the top of the nail head (1); the bottom wall of the hexagonal groove (111) is provided with a cross groove (112) and comprises a flat groove (113).

6. The bone screw for repairing alveolar bone defects according to claim 1, characterized in that: Reverse teeth (25) are fixedly mounted around the threads of the outer wall of the lower middle portion of the nail body (2).

7. The bone screw for repairing alveolar bone defects according to claim 1, characterized in that: An outer through hole (26) is provided around the threads of the lower outer wall of the nail body (2) and around the nail tip (3). The outer through hole (26) penetrates the side walls of the nail body (2) and the nail tip (3) and communicates with the inner guide groove (12). A fixing groove (31) is provided around the outer wall of the nail tip (3).

8. The bone screw for repairing alveolar bone defects according to claim 1, characterized in that: The nail body (2), nail head (1) and nail tip (3) are made of high-strength titanium alloy or other metal materials with excellent biocompatibility.

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