Zero-incisure cervical fusion cage with self-stabilization ridges

Abstract

The invention relates to the field of medical apparatus and instruments for cervical vertebra, in particular to a zero-incisure cervical fusion cage with self-stabilization ridges; the technical problem to be solved by the invention is to provide the zero-incisure cervical fusion cage with the self-stabilization ridges, which not only can be immediately stabilized but also is fixed without screwing a screw or an insertion plate into the tail part of the cervical fusion cage. The zero-incisure cervical fusion cage with the self-stabilization ridges comprises a fusion cage body and a bone grafting straight slot formed in the fusion cage body along the vertical direction; the upper surface and the lower surface of the fusion cage body are respectively and symmetrically provided with the paired self-stabilization ridges; the central axes of the self-stabilization ridges are parallel with each other, and the top face of each self-stabilization ridge is provided with anti-back pawls. The concept of the zero-incisure cervical fusion cage with the self-stabilization ridges, disclosed by the invention, has the skillful points that not only can the transmission of vertebra load be more uniform to avoid local load concentration but also clinical operation is very convenient, and the pain of patients is relieved by creatively utilizing the self-stabilization ridges; the zero-incisure cervical fusion cage has a very promotion prospect, and is especially suitable for anterior decompression and fusion operative treatment on cervical spondylosis.

Description

technical field [0001] The invention relates to the field of cervical spine medical devices, in particular to a zero-profile cervical intervertebral fusion device with a self-stabilizing ridge. Background technique [0002] Anterior cervical discectomy, decompression and bone graft fusion is a classic surgical method for the treatment of cervical spondylosis. The use of intervertebral fusion device reduces the incidence of non-fusion of bone graft and pseudarthrosis, and the zero-profile intervertebral fusion device does not require anterior titanium plate Auxiliary fixation reduces postoperative dysphagia. In order to achieve immediate postoperative stability, after implantation of the zero-profile intervertebral fusion cages currently on the market, 2 to 4 screws or two inserts need to be screwed obliquely at the tail to fix the fusion cages on the upper and lower vertebrae. The operation time is cumbersome, the operation time is prolonged, and the cost is also high; the ...

AI Technical Summary

Problems solved by technology

In order to achieve immediate postoperative stability, after implantation of the zero-profile intervertebral fusion cages currently on the market, 2 to 4 screws or two inserts need to be screwed obliquely at the tail to fix the fusion cages on the upper and lower vertebrae. The operation time is cumbersome, the operation time is prolonged, and the cost is also high; the concentrated load around the implanted screw or insert causes stress shielding, which is not conducive to bone formation; the oblique fixation of the screw or insert is prone to endplate cutting and causes internal damage. The plant is loose; screws or inserts are mostly made of titanium alloy materials, which are opaque to X-rays, and the artifacts are relatively large during MRI or CT examinations, which interferes with the observation of bone graft growth in the air

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