Spinal posterior approach dynamic stabilizing device

Abstract

A spinal posterior approach dynamic stabilizing device provided by the invention relates to an orthopedic implant device used for curing spinal adjacent segment diseases, particularly for curing the degenerative hypertrophy of spinal facet joints, first-degree degenerative spondylolisthesis, spinal stenosis and other diseases. The dynamic stabilizing device contains an elastic prosthesis and two fixing blocks, wherein the two fixing blocks are separately arranged on the upper surface and lower surface of the elastic prosthesis; each fixing block contains a pressing block and two fixing rods; the two fixing rods are arranged on the pressing block; each fixing rod contains a head and a tail; the pressing block is provided with holes connected with the elastic prosthesis and an end surface matched with the upper surface or lower surface of the elastic prosthesis; the elastic prosthesis has an upper surface and a lower surface which are separately matched with the two fixing blocks; the upper and lower surfaces of the elastic prosthesis are separately provided with a positioning rod which is matched with the pressing block on the fixing blocks; and the two fixing blocks are sleeved on the positioning rods on the upper and lower surfaces of the elastic prosthesis through elastic prosthesis connecting holes on the pressing block to be connected together.

Description

technical field [0001] The posterior spinal dynamic stabilization device of the present invention relates to an orthopedic implant device for treating adjacent segmental lesions of the spinal column. Especially for the treatment of spinal facet joint degeneration and hyperplasia, I degree degenerative spondylolisthesis, spinal stenosis and other diseases. Background technique [0002] The main functions of the spine in the human body are to stabilize adjacent vertebral bodies, protect nerves from damage caused by various movements and loads, provide inherent movement of each segment; maintain the integrity of the spine; transmit and distribute loads within the spine. The balance between these three points may be disturbed by pathological changes and surgical procedures. The traditional surgical treatment for adjacent segmental lesions of the spine is rigid fusion surgery, in which the diseased segments of the spine are fused together through selective bone grafting. Althou...

AI Technical Summary

Problems solved by technology

Although this kind of fusion surgery has been widely used and has great curative effect, the physiological and mechanical changes and sequelae may still seriously affect the surgical effect. After rigid fusion, the load distribution changes, resulting in damage to the intervertebral discs, uncinate joints, and facet joints of adjacent segments. Increased mobility, shear, tension, pressure

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