Posterior ligament coulter

Abstract

The invention discloses a novel posterior ligament coulter which comprises a cylindrical handle part in near end for hand hold, a cylindrical coulter body part, a passivity peeling part with a round and blunt front end, and a sharp plough breaking part which are connected into a whole, wherein the passivity peeling part at the far end is vertically connected with a body part in a smooth transition mode, and the sharp plough breaking part extends from the lowest end of the body part to the far end and is in a plough shape. In the invention, because a passivity peeling tool is arranged at the front end of the coulter, the exchanging of a passivity stripper and a sharp stripper is avoided when the posterior ligament is peeled off in a surgery; and during tissue passivity separation, the posterior ligament can be safely peeled off by utilizing the sharp plough breaking part of the novel posterior ligament coulter;the risk of harming endorhachis and spinal cord in the surgery is reduced greatly, the peeling during the passivity separation is achieved, the surgery time is saved, and the safety of the surgery is increased.

Description

technical field [0001] The invention belongs to a medical device, relates to a medical device for stripping tissue in spinal surgery, in particular to a coulter of the posterior longitudinal ligament, which can be bluntly separated in the open-door operation of the posterior lamina of the spine The posterior longitudinal ligament is sharply cut at the same time. Background technique [0002] At present, patients with cervical spondylosis have cervical spine degeneration, stenosis, bone hyperplasia, and instability as common clinical pathological signs, which can seriously affect patients' daily life, work, and quality of life. Surgery is one of the effective treatment methods at present. The purpose of surgery is to restore the normal sequence of the cervical spine and the curvature, height, and mobility of the cervical spine, maintain the stability of the cervical spine, and improve the function of bony compressed nerves. With the advent of various new surgical theories an...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing surgical techniques at present, tissue strippers are used to separate tissues, and two kinds of strippers, blunt and sharp, need to be prepared at the same time according to different separation purposes, so that the two kinds of strippers often need to be replaced frequently during the operation.

Because the posterior longitudinal ligament is closely connected with the posterior wall of the spinal canal, it is necessary to bluntly separate the posterior longitudinal ligament when opening the lamina during open-door surgery. While avoiding damage to the dura mater and spinal cord, the posterior longitudinal ligament is cut and the open-door operation is completed. There are certain risks in the process; especially for some special patients, such as patients with ossification of the posterior longitudinal ligament, hypertrophy of the ligamentum flavum, severe local degeneration, and shrinkage of the scar, it is extremely difficult to separate the posterior longitudinal ligament, and the surgical risk is greatly increased. At the same time, it is very easy to damage the dura mater and spinal cord, causing serious consequences

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