Occipital-cervical fixation fusion system

Abstract

The invention belongs to the technical field of medical instruments, and particularly discloses an occipital-cervical fixation fusion system. The system comprises a dentata pedicle screw, an occipitalbone plate, a cervical posterior transverse connector and connecting rods, wherein the occipital bone plate comprises a central line plate, a left wing plate and a right wing plate which are connected into a whole; the left wing plate and the right wing plate are symmetrically arranged on two sides of the central line plate; a sliding chute and a side wing fixing hole are formed in the left wingplate and the right wing plate; an occipital bone fixing hole is formed in the central line plate; and when the occipital-cervical fixation fusion system is used, the dentata pedicle screw is placed in a bone tissue of a dentata of a patient, the occipital bone plate is fixed on an occipital bone of the patient, the dentata pedicle screw is connected with the occipital bone plate through the connecting rods, and the connecting rods on two sides are connected through the cervical posterior transverse connector. The occipital bone plate adapts to the anatomical characteristics of the occipital bone, fixation of a central line and a side wing is considered, stress is dispersed, and looseness is prevented; and the sliding chute function is provided, so that the relative positions of the connecting rods on two sides can be adjusted to be parallel, stress conduction is facilitated, the mounting operation of the connecting rods is simplified, and the transverse connector is added favorably. The dentata is placed in the directional pedicle screw, so that reduction and reduction of swing of a screw tail after an operation are facilitated.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to an occipital-cervical fixation and fusion system. Background technique [0002] Due to atlanto-occipital deformity and atlantoaxial dislocation, the upper cervical spine needs short-segment reduction and fixation of the occipital neck. Currently, the nail-rod-occipital plate system is the main fixation system for the occipital neck. According to the anatomical structure of the occipital bone, the bone of the occipital protuberance in the midline is thick, while the bone of the squamous occipital parts on both sides is thin. Therefore, the screw fixing position should take into account the above two parts and disperse the reset stress to prevent the screw from loosening. There are the following problems in clinical use: 1. The problem of simultaneous midline and lateral fixation has not been solved well, and the occipital screw is easy to loosen under poor bone quality or s...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned defects in the prior art, the object of the present invention is to provide an occipital-cervical fixation and fusion system, which solves the problems of loosening of occipital screws and difficult installation of connecting rods

Images