Cervical vertebra 2-3 anterior reduction steel plate system

Abstract

The invention discloses a cervical vertebra 2-3 anterior reduction steel plate system which is composed of a reduction steel plate and bone nails. The whole reduction steel plate is in the shape of a similar isosceles triangle of which the three edges are processed through circular arc processing, three top corners of the steel plate are provided with through holes, the included angle between the axis of the top through hole and the outer side face of the steel plate is 50 degrees, the included angle between the axes of the two bottom through holes and the outer side face of the steel plate is 85 degrees, the included angle between the oblique through hole at the central axis of the bottom of the steel plate and the outer side face of the steel plate is 25 degrees, and an oblique plane inclined inwards 12 degrees is formed on the portion, close to the top of the steel plate, of the inner side face of the steel plate. A high-tension (deep-thread) long thick screw is adopted as the screw for the top through hole, the bone nails of which the heads are in the shape of a ball and the outer sides are provided with thin threads are adopted for the bottom through holes, and a tension strengthening screw directly abutting against the screw in the top through hole is adopted for the oblique through hole at the central axis of bottom of the steel plate. According to the cervical vertebra 2-3 anterior reduction steel plate system, through the special design, the steel plate can be fully attached to the outer surface of a vertebra body, the nails enter the vertebra body by adopting an oblique angle, the operation of anterior drilling and nail placing from bottom to upper back portion is facilitated, the bone nails can be driven into the vertebra at the maximum depth, and the fastness degree of the bone nails is improved.

Description

technical field [0001] The invention relates to a reduction and internal fixation steel plate system, in particular to a cervical 2-3 anterior reduction steel plate system for treating cervical vertebrae. Background technique [0002] Due to various factors such as genetics, trauma, tumors and degenerative diseases, the human spine often leads to intervertebral disc herniation, which causes limb pain and other neurological symptoms. For the above-mentioned diseases, the use of surgical internal fixation is a common treatment method in current medicine. At present, the anterior cervical plate is widely used in the internal fixation system of cervical intervertebral disc and vertebral body resection. It can fix the bone graft block, achieve immediate stability during operation and long-term postoperative stability, and can promote the reconstruction of vertebral body. Fusion to maintain the physiological curve of the human cervical spine. [0003] The existing cervical anter...

AI Technical Summary

Problems solved by technology

Special steel plate systems for special structural design of different segments have also appeared one after another, but so far, there is no steel plate system specially designed for C2-C3 segments

The C2 vertebral body of the human body is often dislocated forward, and the risk factor of the rear reduction operation is high and the operation is more difficult, so the reduction operation is generally performed from the front approach, and the C2-C3 segment during the operation is due to the mandible. The embarrassing phenomenon of limited exposure space due to obstruction, the existing steel plate system cannot solve or avoid the above problems well when placed, the operation is difficult, and the postoperative effect is not ideal

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