Intervertebral disk prosthesis

Abstract

The invention provides an intervertebral disk prosthesis. The intervertebral disk prosthesis comprises a U-shaped body. The body comprises an upper end plate, a lower end plate and a connecting rib for connecting the back edge of the upper end plate and the back edge of the lower end plate. The connecting rib is of an arc-shaped structure. The curvature of the front edge of the upper end plate and the curvature of the front edge of the lower end plate are identical to the corresponding spine curvature. The upper side face of the upper end plate and the lower side face of the lower end plate are each provided with a fixing structure, receding-stopping reverse teeth and a hole membrane. The fixing structures are arranged on the front edge of the upper side face of the upper end plate and the front edge of the lower side face of the lower end plate and are provided with fixing holes. The receding-stopping reverse teeth are arranged on the front half part of the upper side face of the upper end plate and the front half part of the lower side face of the lower end plate and incline towards the back edges. The hole membranes are arranged on the upper side face of the upper end plate and the lower side face of the lower end plate. The double rows of receding-stopping reverse teeth and the hole membranes guarantee the stability of the postoperation intervertebral disk, and the intervertebral disk prosthesis is prevented from disengaging out; the fixing structures guarantee the stability of the intervertebral disk, and the elastic connecting rib improves the comfort level, flexibility and bearing capability of the prosthesis.

Description

technical field [0001] The invention belongs to the field of medical instruments, in particular to an intervertebral disc prosthesis. Background technique [0002] Intervertebral disc disease caused by various reasons destroys the integrity of the intervertebral disc structure, causing the intervertebral disc to lose its original function of movement and load bearing, such as degenerative disc disease, which seriously affects people's daily activities. The traditional surgical treatment method is intervertebral fusion. The side effect of this treatment method is that the vertebral bodies at both ends of the diseased intervertebral disc are fused into a whole, which destroys the normal movement and bearing function of the diseased segment, and also changes the adjacent segment. The biomechanical state of the segmental intervertebral disc and other tissues leads to aggravated degeneration of the adjacent segment, so its long-term efficacy is not good. In order to reconstruct ...

AI Technical Summary

Problems solved by technology

[0003] Common artificial cervical intervertebral disc products have a cumbersome structure and relatively complicated surgery, which can easily cause heterotopic ossification, and have poor fatigue and wear resistance. Fatigue fracture and fatigue wear cause the prosthesis to easily produce wear particles, and wear particles can cause aseptic Prosthetic bone resorption leads to failure of prosthetic replacement and prone to postoperative complications

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