Adjustable artificial cervical vertebra and intervertebral connecting complex

Abstract

The invention relates to an adjustable artificial cervical vertebra and intervertebral connecting complex. The adjustable artificial cervical vertebra and intervertebral connecting complex comprises a centrum part and two end plate parts, wherein the two end plate parts are connected with the upper end and the lower end of the centrum part respectively through fetlock structures; the centrum partconsists of an upper centrum part and a lower centrum part which are axially connected with each other through threads; a plurality of screw holes are formed on the side peripheral walls of the uppercentrum part and the lower centrum part radially and correspondingly; a bolt with fixed length is arranged among the screw holes of the upper centrum part and the lower centrum part; and end plate part fixing bolts are arranged on the two end plate parts respectively. The adjustable artificial cervical vertebra and intervertebral connecting complex has the supporting function of an artificial centrum and the movability of an artificial intervertebral disk, is adjustable in length, can realize immediate stability after an anterior cervical operation, has the supporting function, can realize immediate movement function reconstruction after the anterior cervical operation, and has the highly bionic movability compared with the normal cervical vertebra.

Description

technical field [0001] The invention belongs to the technical field of medical prosthesis manufacturing, and relates to a composite body of an artificial cervical vertebral body and an intervertebral connection with adjustable length. Background technique [0002] Due to the aging of the population, the increase in the proportion of desk workers and computer users, and the increase in the incidence of traffic accidents, the number of cervical spine injuries (such as cervical spondylosis, cervical spine fractures, cervical spine tumors, etc.) has increased accordingly. For the surgical treatment of patients with various cervical spondylosis, especially cervical spondylosis and cervical spine fractures caused by cervical disc herniation, there are two keys to surgery: one is decompression. It is necessary to reduce the factors that compress the spinal cord or nerve roots to promote the early recovery of neurological function after surgery. The second is stability. Through va...

AI Technical Summary

Problems solved by technology

Although the materials and shapes of various artificial intervertebral discs are different, they have the following common disadvantages: 1. They can only replace the intervertebral disc alone, but they are powerless to merged vertebral body lesions (such as vertebral body tumors, and need to decompress the vertebral body. surgery)

2. Most scholars do not agree with multi-segment intervertebral disc replacement, especially when two adjacent intervertebral discs are replaced at the same time

[0006] To sum up, the current existing technology cannot solve the problem of mobility after cervical spine surgery, especially the problem of inability to move after multiple segmental surgery, and the resulting degeneration of adjacent segments after fusion

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