A medical adjustable curved tissue removal instrument

Abstract

The present invention relates to a novel medical adjustable bend tissue removal instrument, which comprises a tissue removal head, an adjustable bend unit, a rotating shaft and a regulating straight tube. Made of elastic material, the rotating shaft is installed in the adjustable bending unit, its distal end is connected with the tissue removal head, and the regulating straight tube is sleeved outside the adjustable bending unit; it also includes a protective device, which includes a protective cover, a protective control piece and a control The handle, the protective cover is arc-shaped, and the protective cover is connected to the distal end of the protective control part. The distal part of the protective control part is flexible and has a ring structure. Operating the control handle can make the protective cover move or rotate in the axial direction. The distance between the inner wall of the shield and the axis of the tissue removal head is greater than the radius of the tissue removal head. The angle of the tissue removal head of the present invention can be adjusted, and the adaptability is good, and the side of the tissue removal head is provided with a protective cover, and by adjusting the position of the protective cover relative to the tissue removal head, removal of unneeded tissues is prevented.

Description

technical field [0001] The invention relates to the technical field of spinal canal stenosis decompression instruments, in particular to a medical adjustable bending tissue removal instrument. Background technique [0002] As we grow older, human tissues often proliferate and degenerate, resulting in narrowing of the spinal canal or nerve root canal, resulting in compression of the cauda equina nerve or nerve root, resulting in numbness, pain, and even paralysis in severe cases. During spinal surgery, it is necessary to grind or cut the patient's hyperplastic or degenerated tissue to reduce the compression of the tissue on the nerve, thereby alleviating and eliminating its impact. [0003] In the prior art, such as the international patent application of patent publication number WO 2014 / 041540 A1, a power handle is used to drive the grinding head to rotate for grinding, and the working sheath on the outer layer of the drive shaft is an unadjustable fixed curved shape. [0...

AI Technical Summary

Problems solved by technology

[0004] Since multiple surgical sites often need to be ground in one spinal surgery, and these sites are relatively deep, it is difficult for a fixed-shaped working sheath to go deep into multiple designated sites through a minimally invasive surgical channel; especially the shape of the grinding site is relatively complicated , it is difficult to control the grinding head to adapt to the shape for grinding

In addition, the instrument has a protective cover, but the protective cover is fixed relative to the instrument. Different operations have different requirements for the direction and presence of the protective cover, and it is difficult to adapt to different surgical situations.

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