3D PRINTED BIONIC ARTIFICIAL CERVICAL INTERVERTEBRAL JOINT

摘要

A 3D printed bionic artificial cervical intervertebral joint, comprising an upper combination body (1), a nucleus pulposus (2) and a lower combination body (3); the upper combination body (1) and the lower combination body (3) form a vertically symmetric structure, the nucleus pulposus (2) comprises an upper spherical surface (4), reinforcing ribs (5), a lower spherical surface (6), and a connecting column for connecting the upper spherical surface (4) and the lower spherical surface (6), and the reinforcing ribs (5) are provided between the upper spherical surface (4), the lower spherical surface (6) and the connecting column; the upper combination body (1) comprises an upper vertebral body (11) and an upper end plate (12), the lower combination body (3) comprises a lower vertebral body (31) and a lower end plate (32), recesses (9, 10) fitting the shapes of the upper spherical surface (4) and the lower spherical surface (6) are provided on opposite surfaces of the upper end plate (12) and the lower end plate (32), and lateral fixing holes (8) are provided on a side edge of the upper surface of the upper vertebral body (11) and a side edge of the lower surface of the lower vertebral body (31). The structures of the upper and lower combination bodies and the nucleus pulposus can effectively solve the problems of heterotopic ossification and interbody fusion between upper and lower vertebral bodies occurring after the conventional artificial cervical intervertebral disc prosthetic replacement surgery, and have high operability and safety.