Anterior cervical controllable advancement apparatus

Abstract

The invention relates to an anterior cervical controllable advancement apparatus. The anterior cervical controllable advancement apparatus comprises a fixed arm, a movable arm, a gear rack, a grooved limiting rod and lifting rods, and further comprises a synchronous lifting component, wherein vertebral body screws are assembled at the lower ends of both the fixed arm and the movable arm; the gear rack and the grooved limiting rod are connected to the fixed arm and the movable arm and are capable of sliding relative to the movable arm; the lifting rods are inserted in a limiting groove of the grooved limiting rod; adjusting screw rods and adjusting nuts, which are sleeved, are arranged on the lifting rods; the adjusting nuts are embedded and retained on the upper side of the limiting groove; oblique through holes are formed in the lower ends of the lifting rods; and angle fixing nails are assembled in the oblique through holes. According to the anterior cervical controllable advancement apparatus provided by the invention, lateral approach of an anterior cervical body can be achieved, and advancement of vertebral bodies related to ossification of posterior longitudinal ligament can be conducted; the advancement apparatus is flexible to use, quantitative and controllable in operation and uniform in lifting; the advancement apparatus is good in operating effect and low in injury to patients; and the advancement apparatus has a broad clinical application prospect.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anterior cervical controllable forward movement device for the surgical treatment of ossification of the posterior longitudinal ligament of the cervical spine. Background technique [0002] Ossification of the posterior longitudinal ligament of the cervical spine (OPLL) refers to a disease in which the posterior longitudinal ligament in the cervical spinal canal is replaced by calcified tissue, which induces spinal cord compression in the spinal canal and deterioration of nerve function, which can lead to sensory and motor disturbances in the limbs and internal organs. Autonomic dysfunction. According to the findings on cervical spine X-rays, OPLL can be divided into four types: 1. focal type, isolated ossified posterior longitudinal ligament lesion only involves a single vertebral body or intervertebral space; 2. segmental type, multiple independent posterior longitud...

AI Technical Summary

Problems solved by technology

However, the existing technologies only involve vertebral body reduction-related instruments, but the dislocation of the intervertebral joints and the ossification of the posterior longitudinal ligament of the cervical spine are very different in anatomical features and pathology, and the treatment strategies and considerations are also different. Therefore, The above devices are not suitable for the treatment of spondylolisthesis during OPLL

[0006] In summary, the current clinical lack of technical difficulty is low, the probability of complications is small, and the decompression effect is good. It is suitable for the surgical plan and corresponding instruments for the treatment of ossification of the posterior longitudinal ligament of the cervical spine at each segment.

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