Medial handle, trephining system and operation method thereof

Abstract

The invention provides a medical handle, trephining system and an operation method thereof. The medical handle comprises a holding handle, a sheath fixedly connected with the holding handle, and a shifting ring relatively rotationally sleeving the sheath, wherein a clamping piece is arranged on the sheath; the clamping piece can realize position variation between a working position and a retraction position under the effect of the shifting ring; and the retraction position is farther from the rotating center of the shifting ring in the radial direction than the working position. By rotating the shifting ring, the clamping piece can realize position variation between the working position and the retraction position under the effect of the shifting ring, so that a medical trephine can be effectively prevented from taking out of the sheath in the working process, simultaneously the medical trephine is fixedly connected with the handle in a detachable manner, the replacement cost is reduced, and the work efficiency is improved.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a medical handle, a ring saw system and an operation method thereof. Background technique [0002] In clinical operations, it is usually necessary to use a trephine to help enlarge and shape the lumbar intervertebral foramina. For example, in operations on lumbar disc herniation and lumbar spinal stenosis, in order to expose the spinal canal smoothly without causing damage to the spinal cord, cauda equina, nerve roots and their blood vessels, a trepanation saw is used to drill a hole in the lumbar lamina to open a bone window. is a safe and easy way. Lumbar foraminoplasty technology can effectively expand the lumbar intervertebral foramen, so that the endoscope can enter the spinal canal through the intervertebral foramen. It can also be treated together with lumbar lateral recesses or intervertebral foramen stenosis. Lumbar disc herniation at each segment It can be applied t...

AI Technical Summary

Problems solved by technology

Tessys technology has greatly improved the curative effect of transforaminal percutaneous endoscopic surgery and expanded the surgical indications, but its safety still needs to be further improved: 1. The forming site is at the tip of the superior articular process, and the space Narrow, limited range of shaping, the ganglion of the exit nerve root in the front, and the dural sac inside, during the shaping process, the working edge of the unprotected trepanation saw is sharp, causing irritation or even damage to the ganglion

2. There are synovial folds in the joint capsule at the tip of the upper joint, which contain rich nerve endings. Excision of the tip of the upper joint will cause damage to the synovial folds, leading to traumatic facet syndrome, and obvious low back pain may occur after surgery

3. The tip of the upper articular process is formed, away from the bony lateral recess, and it cannot be effectively treated for lumbar disc herniation with lateral recess stenosis, which may lead to poor postoperative efficacy

[0004] Existing ring saws usually have two structural forms. The first one is to fix the ring saw with a handle. The handle has a handle and a sheath fixedly connected with the handle. The ring saw is fixed on the sheath by axial pressing. It is prone to the problem of sheathing due to excessive force during the operation. After the sheathing occurs, it needs to be re-sheathed and repositioned, which will prolong the operation time and even affect the doctor's mood, which may affect the operation. The second is to make the handle and the ring saw into an integrated structure, but when the front end of the ring saw is worn out, the handle needs to be replaced together with the ring saw, which increases the replacement cost

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