Minimally-invasive transection device for pediculus arcus vertebrae

Abstract

The invention discloses a minimally-invasive transection device for pediculus arcus vertebrae. The minimally-invasive transection device comprises a saw core, a saw sheath and a feeding mechanism, wherein the saw sheath is circular-rod-shaped, a circular hole is axially formed in a saw sheath body, two opposite faces, close to a distant end location of the saw sheath, of the circular hole are subjected to radial contraction, so as to form a flat hole, of which the cross section is rectangular, and the flat hole bends towards the sidewall of the saw sheath and extends out of the external wall of the saw sheath; two side faces, in the width direction of the flat holes, of the distant end of the saw sheath are obliquely expanded from inside to outside, so as to provide a space for rotating back and forth around the central axis of the saw core when a flat structure of the distant end of the saw core extends out of the flat hole. According to the minimally-invasive transection device, during use, the saw core rotates, the saw sheath is stationary, and both the saw core and the saw sheath cannot be subjected to axial movement, so that the axial locating is accurate and does not shift, and the surgery is completed safely and efficiently.

Description

Technical field [0001] The invention relates to a medical surgical instrument, in particular to a surgical cutting instrument. Background technique [0002] Lumbar spinal stenosis refers to a series of spinal canal or nerve root canal or intervertebral foramen stenosis caused by various reasons such as intervertebral disc protrusion, bone hyperplasia or fibrous tissue hyperplasia, hypertrophy, and stimulation and compression of nerve roots or cauda equina Clinical symptoms. [0003] Clinically, surgical methods are currently used for treatment. The traditional open compression surgery has gradually given way to minimally invasive surgery due to the disadvantages of large trauma, high blood loss, susceptibility to infection, and slow postoperative recovery. Minimally invasive surgery is an inevitable trend in the development of surgery. Minimally invasive treatments for lumbar spinal stenosis include percutaneous screw and rod system placement, spinous process distraction, and pedi...

AI Technical Summary

Problems solved by technology

It is not difficult to see that the above-mentioned patent application still has the following defects: when the cutting rod 2 is driven to and fro by the handle 6, there is no point of force to ensure its stability on the entire cutting tool, and it can only be supported by an assistant in the most ideal situation. The sleeve rod 1, so the whole cutting tool inevitably has a large range of axial vibration and radial vibration

Wherein, the said axial jerk will obviously cause the incision to be uneven and block the cutting knife 3, and the joint action of the radial jerk makes the cutting operation of the cutting rod 2 very difficult; the said radial jerk The harm may be even greater, because when a certain part is about to be cut off, the pedicle will be pierced suddenly and the nerves and blood vessels around the pedicle will be damaged, and the patient will be disabled or paralyzed in severe cases.

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