Adjustable saw type excising device for intervertebral disc under spinal endoscope

Abstract

The invention discloses an adjustable saw type excising device for intervertebral disc under a spinal endoscope, and belongs to the field of medical apparatuses. The adjustable saw type excising device comprises a connecting pipe, a handle arranged at one end of the connecting pipe, a first spherical sleeve arranged at the other end of the connecting pipe, a steering group arranged on the first spherical sleeve and a cutting group arranged on the steering group, wherein the steering group comprises a hollow ball which is arranged in the first spherical sleeve and is movably connected with thefirst spherical sleeve, a resecting pipe which is arranged on the outer side of the first spherical sleeve and is connected with the hollow ball and a second spherical sleeve arranged on the resectingpipe. According to the adjustable saw type excising device disclosed by the invention, a doctor can adjust the operating angle of a saw disc and perform high-efficient resecting on a pulpiform nucleus which is tough in character, a fiber ring and a cartilage adhered to a centrum endplate; and a manner of slow removing through biting by a pulpiform nucleus plier under an endoscope is replaced by rotation resecting by the saw disc, "a removing point" is replaced by "an operation surface", so that the efficiency and the success rate of discectomy under the endoscope and lumbar interbody fusion are notably increased.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an adjustable serration resection device for spinal endoscopic intervertebral discs. Background technique [0002] The intervertebral disc is located between the two vertebral bodies of the human spine. It is divided into the nucleus pulposus in the central part, which is a jelly-like substance rich in elasticity; the fibrous ring in the surrounding part is arranged in concentric circles by multi-layer fibrocartilage rings; the upper and lower ends of the intervertebral disc connect the vertebral body One layer of transparent tissue is called the cartilage endplate. One side of the cartilage plate is closely connected with the fibrous annulus and the nucleus pulposus of the intervertebral disc, and the other side is connected with the vertebral body, which has the function of protecting the nucleus pulposus from above and below. The annulus fibrosus of the waist is thick in the...

AI Technical Summary

Problems solved by technology

However, since the diameter of the spinal endoscopic operation channel is only 7mm, and it is often implanted in the operation area at a certain angle with the intervertebral space

Endoscopic discectomy instruments are mostly "gun-style" long-handled operating instruments, mainly endoscopic nucleus pulposus forceps, which have limited gripping ability and are difficult to efficiently remove the tough nucleus pulposus and annulus fibrosus. At the same time, endoscopic The removal of intervertebral disc tissue with the lower nucleus pulposus forceps is mainly performed by "point" grasping and resection, and the cartilage and nucleus pulposus attached to the vertebral endplate are also difficult to use existing endoscopic instruments for effective resection and grinding of the endplate, which will It directly affects the efficiency of intervertebral discectomy and the exposure of the bone graft surface in endoscopic intervertebral body fusion, thus directly affecting the operation efficiency and success rate of endoscopic intervertebral body fusion

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