Hook-like nerve stripper with timely assisted cutting function

Abstract

The invention relates to the technical field of medical instruments, in particular to a hook-like nerve stripper with a timely assisted cutting function. The hook-like nerve stripper consists of an outer handle sleeve, a telescopic cavity, a locking block, a locking slide groove, a longitudinal groove, a gear, a gear shaft, a cutter head, a spring piece, an inner handle sleeve, an inner handle, acutter, a hook-like bend, a hidden cutter pit, a gear slide groove, a locking pin and a pin hole. The right end of the inner handle extends out of the right end of the inner handle sleeve and is combined with the disc-like cutter head into a whole. An acute-angled cutter integrated with the cutter head is arranged at the lower end of the cutter head. During operation, the locking block is presseddownwards by a thumb to slide, then, the gear is driven to rotate, the cutter rotates around the axis of the inner handle, and the cutting edge of the cutter cuts corresponding soft tissue in the rotation process of the cutter.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a hook-shaped nerve dissector with the function of timely auxiliary cutting. Background technique [0002] Hook-shaped nerve strippers are widely used in general surgery, spinal surgery and spinal tumor surgery. The surgical field plays a very important role. The current hook-shaped nerve dissector consists of an operating rod and a hook-shaped head. The front end of the operating rod is fixed with a hook-shaped head. At the same time, it is necessary to sharply incise the superficial soft tissue covering the surface, and multiple surgical instruments are operated in a narrow surgical space, which often causes great trouble to the operator, and during the sharp incision process, there are Risk of damaging deep vital tissues. [0003] The application number is 201420654230.5 "hook-shaped nerve dissector with soft tissue cutter" in order to solve the above problems, ...

AI Technical Summary

Problems solved by technology

The current hook-shaped nerve dissector consists of an operating rod and a hook-shaped head. The front end of the operating rod is fixed with a hook-shaped head. At the same time, it is necessary to sharply incise the superficial soft tissue covering the surface, and multiple surgical instruments are operated in a narrow surgical space, which often causes great troubles to the operator, and during the sharp incision process, there are Risk of damaging deep vital tissues

[0004] 1. When separating and exposing the soft tissue nerve, when the hook-shaped elbow hooks the edge of the incision for pulling, the outer end of the hook-shaped head is in the incision, and the cutting edge of the knife is facing the surgical incision at this time If you do not pay attention, a new incision perpendicular to the original incision will be cut on the edge of the original incision, causing unnecessary damage

[0005] 2. During the separation process, when sharply cutting the superficial soft tissue, it is necessary to perform auxiliary cutting in a direction parallel to the incision, so as to facilitate the further stripping of the hook-shaped head and further reveal the surgical field of view. The cutter blade in the above scheme is in the same plane as the axis of the hook-shaped head, which makes it impossible to realize the above-mentioned operation of sharply cutting the superficial tissue

[0006] 3. When using the blade to cut the superficial soft tissue, a relative reciprocating motion between the blade and the soft tissue is required before the cutting can be carried out, and the cutting blade is fixed as a whole with the hook-shaped head. To perform cutting, the hook-shaped The head can only move synchronously with the cutter, which in turn affects how well the hooked head pulls the edge of the cut

[0007] 4. In the pulling project, in order to expose the different positions of the incision, the hook-shaped elbow needs to slide along the edge of the incision, and the existence of the fixed and protruding cutter not only hinders the movement of the hook-shaped elbow, but also Its blade also inevitably scratches on the edge of the incision, causing new scratches on the edge of the incision

Images