Vertically implanted artificial vertebral body

Abstract

The invention provides a vertically implanted artificial vertebral body which comprises a vertebral body, a bone grafting screw and a driving part, an accommodating cavity is formed in the cone; a plurality of conical protrusions are arranged on the end face of one end of the cone, and a penetrating-out hole communicated with the containing cavity is formed in the end face of the other end of thecone. The bone grafting screw is arranged in the accommodating cavity, the tip end of the bone grafting screw faces the penetrating-out hole, the driving component is provided with a control end and adriving end, and the driving end of the driving component penetrates through the side wall of the vertebral body and is connected with the bone grafting screw so as to be used for driving the bone grafting screw to rotate. According to the artificial vertebral body, the mode that the bone grafting screw is perpendicularly driven in along the central axis of the spine of the human body is adopted,other structures protruding out of the spine body are not added, foreign body sensation of prosthesis implantation is avoided, and meanwhile the problem that the bone grafting screw is prone to beingbroken and disengaged when the bone grafting screw is driven in the transverse direction or the oblique direction is avoided.

Description

technical field [0001] The invention relates to the technical field of medical prosthesis, in particular to a vertically implanted artificial vertebral body. Background technique [0002] In the treatment of human spine diseases, vertebral body destruction is often caused by spinal tumors, tuberculosis and severe fractures, which may lead to spinal cord nerve damage and have to perform vertebral body resection. The spine after vertebral body resection needs to rebuild its stability, and the emergence of artificial vertebral body replacement provides an ideal method for the treatment of such diseases. Since the first report of vertebral body tumor resection and prosthetic replacement in the late 1960s, artificial vertebral bodies have been widely used clinically as a kind of effective vertebral body substitutes. [0003] However, in clinical application and a series of biomechanical tests, it has been shown that the traditional artificial vertebra has some problems to be sol...

AI Technical Summary

Problems solved by technology

It is found in clinical and biomechanical tests that after a period of use, the cooperation between the above-mentioned external thread and the threaded hole is not stable enough, and the thread is prone to prolapse. It will generate a large shear force, causing the screw to be easily broken, which will lead to the displacement or even prolapse of the main body of the artificial vertebral body

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