Angle adjustable height retractable artificial vertebral body

Abstract

The invention belongs to the technical field of artificial vertebral bodies and relates to an adjustable angle and height telescopic artificial vertebral body comprising a top fixing plate, a bottom fixing plate, an upper vertebral element, a lower vertebral element, and screws. Each of the upper and lower vertebral elements is provided with a round through hole inside. The lower vertebral element is nested in the round through hole of the upper vertebral, or the upper vertebral element is nested in the round through hole of the lower vertebral element. The adjustable angle and height telescopic artificial vertebral body is characterized in that a first joint and angle adjustment mechanism is arranged between the top fixing plate and the upper vertebral element, a second joint and angle adjustment mechanism is arranged between the bottom fixing plate and the lower vertebral element, and a vertical expansion adjusting mechanism is arranged between the upper vertebral element and the lower vertebral element. The adjustable angle and height telescopic artificial vertebral body has the advantages that the defects of the existing artificial vertebral bodies can be overcome; according to the need for spinal reconstruction, the angle of the artificial vertebral body can be adjusted conveniently and quickly, and the height of the artificial vertebral body can also be adjusted quickly and precisely; operation time can be shortened effectively and patients bear fewer wounds.

Description

technical field [0001] The invention belongs to the technical field of artificial vertebral bodies, and in particular relates to an angle-adjustable and height-stretchable artificial vertebral body. Background technique [0002] Since Hamdi first reported L2 plasmacytoma and metastatic adenocarcinoma in 1969, vertebral body tumor resection and prosthetic replacement, artificial vertebral bodies have been widely used clinically as a kind of effective vertebral body substitutes. The development of artificial vertebral body has gone through several development stages of simple support type, fixed type and adjustable fixed type. However, the height adjustment of artificial vertebral body in the prior art is mainly based on spiral adjustment, which cannot be fixed after adjustment, and the reliability is not good. powerful. The angle adjustment is done through the inherent angles of the upper and lower endplates of the artificial vertebral body. The adjustment range is limited,...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an angle-adjustable and height-stretching artificial vertebral body, which can overcome the deficiencies of the existing artificial vertebral bodies, and can conveniently and quickly adjust the angle of the artificial vertebral body and Quickly and accurately adjusting the height of the artificial vertebral body can effectively shorten the operation time and reduce the trauma of the patient, so that the artificial vertebral body can not only have immediate postoperative stability without other auxiliary fixation, but also achieve long-term stability. permanent bony fusion

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