Minimally invasive dual-locking implantation system for cervical vertebra

Abstract

The invention relates to a cervical spine minimally invasive doubly-locked transplant system, which comprises a cervical spine forward board and a locked nail, wherein the length direction arc semidiameter of the cervical spine forward board is between 30 and 50 mm; a screw cap of the locked nail is provided with external threads, a locked hole of the cervical spine forward board is provided withinternal threads, the cervical spine forward board is fixed on an adjacent cervical spine body which needs to be repaired by screwing a cross slot on the screw cap of the locked nail, the external threads of the screw cap of the locked nail and the locked hole with threads of the cervical spine forward board realize primary tight lock through taper fitting; the top of the locked nail is provided with an internal thread hole for locking taper fitting bolt, wherein the top end of the taper fitting bolt is provided with a hexagon locking groove, and the secondary tight lock of the locked nail and the locked hole of the cervical spine forward board is realized through tight lock and bulge of the taper fitting bolt in the internal thread hole of the screw cap. The transplant system realizes even and anastomotic contact of the cervical spine forward board and the cervical spine body, the doubly-locked tight nail is locked and not loose, the cervical spine is fixedly repaired without deformation, the time for recovery is fast and no sequela is remained after operation.

Description

technical field [0001] The invention relates to a medical orthopedic implant, specifically a double-locking implant system for cervical vertebral fractures, injuries and pathological changes, especially for fixation and repair of the sixth and seventh cervical vertebral bodies. Background technique [0002] The human cervical spine includes seven vertebral bodies. In the event of cervical spondylosis or fracture, two or more vertebral bodies are usually fixed by the anterior cervical plate. Due to the particularity of the cervical spine, the requirements for its implantation surgery are relatively high and the operation is difficult. . The anterior cervical plate is a minimally invasive fixation implant material for human cervical vertebral bone injuries, injuries or other lesions. The shape, fixation method, and surface quality of the anterior cervical plate and human bones directly affect the bone health of patients. Growth and recovery. [0003] At present, the anterior...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the prior art that the shape of the anterior cervical plate and the cervical vertebral body do not match, the operation of the locking nail is inconvenient, the anti-loosening structure is unreasonable, and the normal recovery of the affected area is affected. The sixth and seventh cervical vertebrae are in balanced contact, and the tapered bolt anti-loosening structure is adopted, which is a minimally invasive cervical double locking implantation system that facilitates surgery

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