Anterior cervical spine zero-notch interbody fusion device

Abstract

An anterior cervical zero-profile intervertebral fusion device relates to a cervical intervertebral disc implant. There is a thick-plate-shaped fusion cage, and a fusion cavity is provided in the middle of the fusion cage. It is characterized in that the front face of the fusion cage is provided with an upwardly inclined upper vertebral body fixing hole and a downwardly inclined lower vertebral body fixing hole. The upper vertebral body There are fastening screws in the fixing hole and the lower vertebral body fixing hole respectively. The fastening screw includes three parts: the nail body, the connecting neck and the nail cap. The lower side of the nail cap is arc-shaped; The holes all include a nail cap embedding hole matched with a fastening screw and a connecting neck hole. The invention is simple in structure and easy to use. The front end of the fusion device is substantially flush with the front side of the cervical vertebrae and has a low notch, which is beneficial to surgical healing. The neck of the patient is comfortable and safe after the operation, and normal life will not be affected.

Description

technical field [0001] The invention relates to a cervical intervertebral disc implant, in detail, it is an anterior cervical zero-notch intervertebral fusion device with simple structure, firm positioning, comfortable and safe neck for postoperative patients, and no influence on normal life. Background technique [0002] We know that anterior cervical intervertebral resection, decompression and fusion is a routine operation in cervical spine surgery. Because of its small surgical trauma, high safety and good effect, it has become a mature operation for the treatment of cervical spondylosis. The existing intervertebral fusion device used for this operation includes a fusion cage and an anterior cervical plate. There are non-reverse teeth on the side and the lower side, and screw holes are set on the anterior cervical plate. During the operation, the fusion cage was implanted in the intervertebral space, and the anterior cervical plate was fixed on the upper and lower verteb...

AI Technical Summary

Problems solved by technology

The anterior cervical steel plate of this intervertebral fusion device is fixed in front of the vertebral body and behind the esophagus. Because the incision of the steel plate is likely to cause varying degrees of compression and impact on the esophagus, some patients have dysphagia after surgery, especially multi-segmental The immobilization effect is more obvious, the mild one affects the normal life of the patient, and the severe one is complicated by esophageal fistula and even leads to death

Images