3D printed bionic artificial cervical intervertebral joint

Abstract

The embodiment of the invention discloses a 3D printed bionic artificial cervical intervertebral joint. The artificial cervical intervertebral joint comprises an upper combination body, a nucleus pulposus and a lower combination body, wherein the upper combination body and the lower combination body are in an up-down symmetrical structure; the nucleus pulposus comprises an upper spherical surface,reinforcing ribs, a lower spherical surface and a connecting column for connecting the upper spherical surface and the lower spherical surface, wherein the reinforcing ribs are arranged among the upper spherical surface, the lower spherical surface and the connecting column; the upper combination body comprises an upper vertebral body and an upper end plate; the lower combination body comprises alower vertebral body and a lower end plate; concave surfaces which are matched with the upper spherical surface and the lower spherical surface are respectively arranged on surfaces, facing to each other, of the upper end plate and the lower end plate; and the side edge of the upper surface of the upper vertebral body and the side edge of the lower surface of the lower vertebral body are respectively provided with lateral fixing holes. According to the invention, the problems of ectopic ossification and fusion between the upper vertebral body and the lower vertebral body after conventional artificial cervical intervertebral disc prosthesis replacement operations are effectively solved, and the 3D printed bionic artificial cervical intervertebral joint has the advantages of high operability, high safety, better economy and the like.

Description

technical field [0001] The invention relates to the technical field of medical prosthesis and 3D printing, in particular to a 3D printed bionic artificial cervical intervertebral joint. Background technique [0002] In recent years, the incidence of cervical spondylosis in my country has been increasing year by year, and tends to be younger. According to statistics, there are hundreds of millions of cervical spine patients in my country. There are 7 cervical vertebrae and 6 intervertebral discs in the cervical spine. It is the most complex and special part of the spine. It not only bears the load of the head, but also performs multi-directional activities such as flexion, extension and rotation, and is the most prone to strain and strain. The cervical intervertebral disc is mainly composed of three parts: the upper endplate, the nucleus pulposus, and the lower endplate. It is the main connection between the vertebral bodies. Its physiological function is to cushion shocks, ...

AI Technical Summary

Problems solved by technology

It can solve the problems of heterotopic ossification, prosthetic dislocation, upper and lower vertebral body fusion and personalized matching after artificial cervical disc replacement.

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