An adjustable wheel-shaped device for spinal endoscopic intervertebral disc resection

Abstract

The invention discloses an adjustable wheel-shaped cutting device for an intervertebral disc under a spinal endoscopy, and belongs to the field of medical instruments. The device includes a main tube,a handle arranged at one end of the main tube, a steering sleeve arranged at the other end of the main tube, a steering set arranged on the steering sleeve, and a wheel-shaped cutting set arranged onthe steering set. Doctors can adjust the operating angle of a wheel-shaped scraper to effectively cut away nucleus pulposus and fibrous rings strong but pliable in texture and vertebral endplate attached cartilages, and the success rates of the efficient removal of the intervertebral disc under the endoscopy and an interbody bone graft and fusion operation are improved.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to an adjustable wheel-shaped excision 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 endplate is closely connected with the annulus fibrosus 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. Lumbar annulus fibrosus is thick in the front...

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

Images