An adjustable curved tissue removal instrument with mapping function

Abstract

An adjustable and bendable tissue removal apparatus having a mapping function and for medical use comprises an adjustable and bendable unit (11), a rotating shaft (12), and a straight adjustment tube (31). The adjustable and bendable unit (11) comprises a curvature determining portion (13) at a distal end portion, and the curvature determining portion (13) is made of an elastic material. The rotating shaft (12) is mounted in the adjustable and bendable unit (11), and has a distal end connected to a tissue removal head (1). The straight adjustment tube (31) is sleeved on the adjustable and bendable unit (11). The adjustable and bendable tissue removal apparatus further comprises a protection device and a mapping device. The protection device comprises a protective cover (22), a protection control component (23), and a control handle (36). The protective cover (22) has a curved shape, and is sheet-like. The protective cover (22) has a proximate end connected to a distal end of the protection control component (23), and the distal end of the protection control component (23) is flexible and has a ring-shaped structure. Operating the control handle (36) enables the protective cover (22) to move along an axial direction or rotate about the axial direction. The mapping device comprises a mapping electrode (26) disposed on the protective cover (22) and connected to a mapping handle (38) via an electrode wire (27). The tissue removal head (1) has an adjustable angle, and the protective cover (22) and the mapping electrode (26) provided thereon are used to avoid tissues that are not to be removed.

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 with a mapping function. 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 f...

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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