3D-printed bionic anti-dislocation movable artificial cervical vertebra and intervertebral connection complex

Abstract

The invention discloses a 3D-printed bionic anti-dislocation movable artificial cervical vertebra and intervertebral connection complex. The complex comprises an upper end plate, a lower end plate, abionic vertebral body and an anti-dislocation structure, wherein the bionic vertebral body comprises a vertebral main body with a hollowed-out middle part; an upper cotyle is arranged at the upper part of the vertebral body, and a lower cotyle is arranged at the lower part of the vertebral body; the upper cotyle is connected with the upper end plate through an upper end plate joint structure; andthe lower part of the upper cotyle is connected with the lower end plate through a lower joint structure. The complex has an enough support structure, and can provide stable support after anterior cervical vertebra resection; the motion function of the normal cervical vertebra is replaced by the motion of a ball joint of the complex, the original mobility of the cervical vertebra can be reserved,and the occurrence of diseases of adjacent segments of the cervical vertebra caused after fusion surgery is prevented; and the complex is provided with the matched anti-dislocation structure which iscapable of preventing dislocation during joint motion. The complex is small in implantation operation difficulty, small in trauma and convenient to popularize.

Description

【Technical field】 [0001] The invention relates to a 3D printing bionic anti-dislocation movable artificial cervical vertebra and an intervertebral connection complex. 【Background technique】 [0002] With the advancement of the times and the transformation of work forms, the number of long-time desk workers is increasing year by year, and the aging trend of the social population is gradually aggravating. Therefore, the incidence of cervical spine diseases (such as cervical spondylosis, vertebral tumors, etc.) is increasing year by year. Surgical treatment of cervical spine disorders focuses on relieving compression and simultaneously rebuilding the stability of the spine. Surgery requires resection of pathological factors that cause spinal cord and nerve root compression, and implantation of different types of spinal implants to achieve immediate stability and long-term maintenance. At present, subtotal cervical corpectomy and decompression combined with vertebral body fusio...

AI Technical Summary

Problems solved by technology

However, these movable artificial vertebral bodies still have the following problems, such as insufficient protection of the movable articular surface and the risk of joint dislocation; the structure design of the artificial vertebral body has too little contact surface with the bone, which is not conducive to the growth of bone cells; the artificial vertebral body The fixed part exceeds the scope of the vertebral body, which may cause compression and damage to local tissues and organs

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