Depth-limit tooth-shaped bone cutter with graduated sleeve for articular process and working method of cutter

Abstract

The invention relates to a depth-limit tooth-shaped bone cutter with a graduated sleeve for the articular process and a working method of the depth-limit tooth-shaped bone cutter, and belongs to the field of medical instruments. The bone cutter comprises a positioning needle in a straight round rod shape, the bottom of the positioning needle is sharp, the bone cutter comprises an expanding tube ina tube shape, the lower end of the expanding tube is in an inverted-cone body shape, the positioning needle is matched in the expanding tube, the bone cutter comprises a sleeve, the sleeve is a thin-wall cylinder, the inner diameter of the sleeve is matched with the outer diameter of the expanding tube, and an intervertebral foramen endoscope technology endoscope channel is rapidly and safely established. In this way, operation is performed on the diseased intervertebral disc and hyperplasia osteophyte conveniently under an intervertebral foramen endoscope, the articular process can be rapidly and conveniently cut in an operation, and injuries to nerve roots and duramater spinalis in the operation are avoided or reduced.

Description

technical field [0001] The invention relates to a tooth-shaped osteotomy device for limiting the depth of an articular process scale sleeve and a working method thereof, and belongs to the field of medical instruments. Background technique [0002] The internationally advanced minimally invasive surgical technique of intervertebral foramina has overcome the deficiencies of previous minimally invasive techniques and has become the best minimally invasive treatment for lumbar disc herniation. As a revolutionary innovative technology of minimally invasive spine, foraminal mirror has unparalleled technical advantages in the treatment of intervertebral disc herniation. Compared with previous surgeries, the foraminoscopic technique can see the anatomical structure more clearly under the magnification and monitoring of the endoscope. The protruding intervertebral disc tissue is removed and the spinal stenosis is treated with special surgical instruments for the foraminal mirror, an...

AI Technical Summary

Problems solved by technology

Compared with various previous surgeries, the transforaminal endoscopic technology can see the anatomical structure more clearly under the magnified monitoring of the endoscope. The protruding intervertebral disc tissue is removed with the special surgical instruments of the transforaminal endoscope and the spinal canal stenosis is directly relieved. Nerve compression, but if the facet osteotomy suddenly penetrates when exerting force, the instrument directly penetrates into the spinal canal and sympathetic fossa to damage the dura mater, spinal cord and nerve roots, which will damage the normal tissue of the patient and even endanger the patient's life. risk

At present, there is a lack of suitable tools for fast and safe cutting of the articular process in the supporting equipment

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