Operation angle changeable type zygopophysis osteotome capable of avoiding image covering

Abstract

The invention relates to an operation angle changeable type zygopophysis osteotome capable of avoiding image covering. The zygopophysis osteotome comprises a working sleeve and an osteotome shifting rod connected to the outer side of the sleeve in a sleeving mode, wherein the osteotome shifting rod comprises a chiseling part, a connecting part, a driving part and a clamping part, the chiseling part and the driving part are both straight grooves with arched surfaces, the arched surface of the chiseling part protrudes upwards, and the front end of the chiseling part is a pointed end; the arched surface of the driving part protrudes downwards, and the rear end of the driving part is connected with the clamping part; the connecting part is a round tube, and the two end faces of the round tube incline to one side; the rear end of the chiseling part is in smooth butt joint with the upper edge of one end of the connecting part, the driving part is in smooth butt joint with the lower edge of the other end of the connecting part, and the chiseling part, the connecting part and the driving part form a Z-shaped body. According to the zygopophysis osteotome, the working sleeve and a foraminal mirror connected in the working sleeve in a penetrating mode can not be damaged, the front end of the foraminal mirror can not be blocked, and then visual bone chiseling operation is realized.

Description

technical field [0001] The invention relates to a treatment instrument for spinal surgery, in particular to an articular process osteotome with variable operating angle and no blocking image field of view. Background technique [0002] On both sides of each vertebra of the lumbar spine, there is a pair of upwardly protruding bony tissues called the superior articular processes, and a pair of downwardly protruding bony tissues called the inferior articular processes. The positions of a pair of facet joints on the same side between two adjacent vertebrae correspond to each other up and down, forming a facet joint. Therefore, there is a pair of facet joints between every two adjacent vertebrae. The facet joints constitute the back wall of the intervertebral foramen, and the nerve roots of the neck and waist pass through the front of the facet joints. Therefore, when the intervertebral disc or facet joints degenerate and hyperplasia and bone spurs appear, it is easy to compress ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a facet osteotome with a variable operating angle and no blocking of the image field of view, so as to solve the problems of poor safety when using a trephine and inconvenient operation when using endoscopic instruments during facet bone removal.

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