CN217611337U

CN217611337U - Orthopangry jaw surgery cuts bone chin shaping fixed titanium nail

Info

Publication number: CN217611337U
Application number: CN202123083772.0U
Authority: CN
Inventors: 康永杰; 史雨林; 陆金标; 苏忠平; 杨勇; 段景皓; 宗春琳; 商洪涛; 田磊
Original assignee: Air Force Medical University of PLA
Current assignee: Air Force Medical University of PLA
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-10-21
Anticipated expiration: 2031-12-09

Abstract

The utility model relates to a jaw set screw technical field especially relates to a fixed titanium nail of orthopedics department osteotomy chin shaping. The screw cap, go up the screw body, the light face body and the lower screw body, and integrated into one piece, the screw thread of the same structure is all seted up to the upper screw body and the lower screw body, the light face body is the glossy body of rod from last to being in proper order down. The upper end surface of the screw cap is provided with a cross groove. The screw cap is an inverted cone structure with the upper end face and the lower end face being horizontal planes. The threads of the upper screw body and the lower screw body are triangular inclined threads. Due to the three-section arrangement, the middle smooth surface body has higher strength compared with a common threaded rod body, and cannot be broken at the thread position due to stress as the threaded rod body in actual use, so that a stable fixing effect can be achieved, and materials can be saved; the lower end of the lower screw body is provided with the inclined groove, so that better drilling is facilitated.

Description

Orthopangry jaw surgery cuts bone chin shaping fixed titanium nail

Technical Field

The utility model relates to a jaw set screw technical field especially relates to a fixed titanium nail of orthopedics department osteotomy chin shaping.

Background

With the development of medical treatment level, some people who have face dissonance and poor beauty due to jaw deformity realize facial correction and beauty through jaw deformity correction. At present, the maxillofacial deformity is corrected by mainly adopting a bone cutting chin forming method, the position of the jawbone of a patient is readjusted after the jawbone is cut off, and the relation between the front and back of a dental arch and the vertical direction is reshaped, so that the bone blocks of the jawbone are corrected to be in a reasonable and proper position.

The common fixation modes of patients with the existing common osteotomy genioplasty (forward migration is more than or equal to 5 mm) mainly comprise the following steps: 1. conventional small titanium plate titanium nails; 2. forming a titanium plate and titanium nails by using the chin; 3. and (5) long titanium nails. However, there are problems with all three common fastening methods. For the first conventional small titanium plate titanium nail, the second chin forming titanium plate and titanium nail, because more titanium alloy materials are used, the price is very high, and the medical cost of a patient is increased; for the third type of long titanium nail, although the material is saved, the long titanium nail has insufficient strength due to large length and is easy to break off when being disassembled.

SUMMERY OF THE UTILITY MODEL

To the problem that exists, the utility model aims at providing a fixed titanium nail of orthopedics osteotomy chin shaping through the setting of syllogic, plays stable fixed when can save material.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a orthopaedics department cuts fixed titanium nail of bone chin shaping, includes the body, the body is from last to down being screw cap, last screw body, the smooth face body and the lower screw body in proper order, and integrated into one piece, the screw thread of the same structure is all seted up to last screw body and lower screw body, the smooth body of rod of the smooth body of rod.

Preferably, the upper end surface of the screw cap is provided with a cross-shaped groove.

Preferably, the screw cap is of an inverted cone structure with the upper end surface and the lower end surface being horizontal planes.

Preferably, the threads of the upper screw body and the lower screw body are triangular oblique threads.

Preferably, the length of each of the upper screw body and the lower screw body is 4mm, the outer diameter is 2.2mm, the inner diameter is 1.8mm, and the thread pitch is 0.7mm.

Preferably, the diameter of the optical surface body 5 is 2.2mm.

Compared with the prior art, the beneficial effects of the utility model are that:

1. due to the three-section arrangement, the middle smooth surface body has higher strength compared with a common threaded rod body, and cannot be broken at the thread position due to stress as the threaded rod body in actual use, so that a stable fixing effect can be achieved, and materials can be saved;

2. the lower end of the lower screw body is provided with the inclined groove, so that better drilling is facilitated.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural view of the fixed titanium nail formed by the osteotomy chin in orthognathic surgery of the present invention.

Wherein: 1. the screw comprises a screw cap, 2 parts of an upper screw body, 3 parts of a smooth surface body, 4 parts of a lower screw body, 5 parts of inclined grooves and 6 parts of cross grooves.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b):

referring to the attached figure 1, a fixed titanium nail of orthopaedics department osteotomy chin shaping, includes the body, the body is from last to down being screw cap 1, going up screw body 2, plain noodles body 3 and screw body 4 down in proper order, and integrated into one piece, the screw thread of the looks isostructure is all seted up to going up screw body 2 and screw body 4 down, the plain noodles body 5 is the glossy body of rod.

Compared with a common threaded rod body, the middle smooth surface body has higher strength, and cannot be broken at the thread position due to stress as the threaded rod body in actual use, and the thread bodies at the two end parts can be firmly connected, so that a stable fixing effect can be achieved, and materials can be saved;

furthermore, the cross groove 6 is formed in the upper end face of the screw cap 1, so that a drilling machine can conveniently drill a titanium nail into a jaw bone of a patient.

Further, screw cap 1 is the back taper structure that the terminal surface is the horizontal plane about for, bores corresponding hole through the rig, can realize closer laminating, realizes that the screw cap blocks into the drilling completely, with patient's bone surface parallel and level. The jaw shaping operation of current has been solved, because the screw cap of titanium nail is oblate column structure, fixed back screw cap part exposes, causes the local arch of corresponding position skin, causes the pleasing to the eye influence that causes of the facial appearance of postoperative.

Furthermore, the screw thread of the upper screw body 2 and the screw thread of the lower screw body 4 are triangular inclined screw threads, so that the jaw bone of a patient can be drilled more quickly.

Furthermore, the length of the upper screw body 2 and the length of the lower screw body 4 are both 4mm, the outer diameter is 2.2mm, the inner diameter is 1.8mm, and the thread pitch is 0.7mm.

Furthermore, the diameter of the smooth surface body 3 is 2.2mm, and the length specifications are respectively 4mm, 6mm and 8mm, so that the requirements of different operations can be met.

Furthermore, the lower end of the lower screw body 4 is provided with an inclined groove 5, which is beneficial to drilling.

The utility model discloses a principle and use flow:

during the use, at first use reamer at patient's jaw operation department drilling, in screwing in titanium nail drilling after the drilling is accomplished to make screw cap 1 completely get into in the drilling, with the surface parallel and level of bone, will cut the bone and be connected with the bone of jaw through the titanium nail, accomplish orthognathic surgery and cut bone chin shaping operation.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an orthognathic surgery cuts bone chin shaping fixed titanium nail which characterized in that: the novel screw cap comprises a body, the body is from last to being screw cap (1), last screw body (2), plain noodles body (3) and lower screw body (4) down in proper order, and integrated into one piece, the screw thread of the same structure is all seted up with lower screw body (4) to last screw body (2), the plain noodles body (3) are the glossy body of rod.

2. The orthognathic surgical osteotomy chin shaping fixation titanium nail of claim 1, wherein: the upper end surface of the screw cap (1) is provided with a cross groove (6).

3. The orthognathic surgical osteotomy chin shaping fixation titanium nail of claim 2, wherein: the screw cap (1) is of an inverted cone structure with the upper end face and the lower end face being horizontal planes.

4. The orthognathic surgical osteotomy chin shaping fixation titanium nail of claim 3, wherein: the threads of the upper screw body (2) and the lower screw body (4) are triangular oblique threads.

5. The orthognathic surgical osteotomy chin shaping fixation titanium nail of claim 4, wherein: the length of the upper screw body (2) and the length of the lower screw body (4) are both 4mm, the outer diameter is 2.2mm, the inner diameter is 1.8mm, and the screw pitch is 0.7mm.

6. The orthognathic surgical osteotomy chin shaping fixation titanium nail of claim 5, wherein: the diameter of the light surface body (3) is 2.2mm.