Anterior cervical zero-profile intervertebral fusion

Abstract

The invention relates to a zero-incisure interbody fusion cage for the anterior cervical vertebra. The interbody fusion cage comprises a fusion cage body and a fixing component, wherein the fusion cage body and the fixing component form micromotion gap buckling connection. The fixing component is composed of a massive body, screw holes, clamping arms and clamping hook parts, wherein the screw holes are formed in the massive body, form a reverse inclination angle and are arrayed through staggering; the two ends of the massive body separately extend perpendicularly to form the clamping arms, andthe ends of the clamping arms separately extend inwards and perpendicularly to form the clamping hook parts; the fuse cage body is composed of a U-shaped frame, saw teeth, inclined sliding grooves, half screw holes and fastening screws, wherein the saw teeth are arranged on the two end faces of the U-shaped frame respectively through protruding, the inclined sliding grooves are symmetrically formed in the outer side face of the waist of the U-shaped frame and extend inwards separately from the outer end wall, the half screw holes which are in butt joint with half screw holes of the fixing component are formed in the two ends of one end face and incline toward the direction of the saw teeth separately, and the fastening screws fasten the fixing component on the upper and lower vertebral bodies of a human body through the screw holes.

Description

technical field [0001] The invention relates to an anterior cervical zero-notch intervertebral fusion device. Background technique [0002] There are already more than ten kinds of zero-profile cervical intervertebral fusion devices such as PEEK PREVAIL, Zero~P, ROI~C, MC+, COALITION, STALIF~C, etc., which have been widely used in Europe, America, Asia and other places. However, there are few self-designed zero-notch fuser products authorized in China, and most of the authorized and pending applications are changes based on the structural shape and size of foreign products, and there are few products with innovative structural designs. [0003] CN104068949.A discloses an anterior cervical zero-notch intervertebral fusion device. The structure includes: PEEK thick-plate-shaped fusion cage and two TC4 fastening screws, and the upper and lower sides of the front of the thick-plate-shaped fusion cage are equipped with limit stops , to prevent excessive implantation, the upper a...

AI Technical Summary

Problems solved by technology

Another object of the present invention is to provide a gap connection that not only enables the fixing plate to effectively clamp and fix the fusion body, but also ensures that the fixing plate can move and rotate within a small range relative to the fusion body. This method effectively solves the problem of When the fusion device is first implanted in the patient's body, the product cannot be fused, loosened or even prolapsed due to the movement of the patient's neck. An anterior cervical zero-profile intervertebral fusion device

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