Telescopic scalpel for spine and scalpel head

Abstract

The invention discloses a telescopic scalpel for spine and a scalpel head. The telescopic scalpel comprises the scalpel head, a scalpel rod and a handle, wherein the scalpel rod and the handle are used for being connected with the scalpel head; the scalpel head comprises a switch arranged in an inner cavity of the handle, and comprises a first-stage electrode, a second-stage electrode and a third-stage electrode which are sequentially arranged in a nested mode from inside to outside; the outer side of the first-stage electrode is sleeved with an insulting cannula and the end part of the first-stage electrode is connected with an electric wire through a stainless steel needle core to obtain a power supply; the outer side of the stainless steel needle core is connected with a first insulating layer in an attached manner; the second-stage electrode and the first-stage electrode are connected or disconnected after stretching, so that different cutting loops are formed; the third-stage electrode is fixedly connected with the handle through a stainless steel tube II; and a movable gap I is reserved between the insulating cannula and the first insulating layer and a stainless steel tube I arranged outside the insulating cannula and the first insulating layer. The scalpel can adapt to cutting and treatment of various spine wound surfaces with different areas, the replacement of the scalpel in the spine operation process is reduced, the treatment time of the spine operation is shortened, and the cross infection is reduced.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a retractable scalpel for spinal surgery. Background technique [0002] Existing plasma surgery systems mostly use plasma scalpels with fixed working tips. When performing internal spinal surgery, different working tips with different working areas are required for different parts. The operation time has a certain influence. [0003] Although Chinese patent 201420179133.5, titled as an electric knife pen discloses that the electric knife pen includes a handle, an electrode and an electric knife head connected to the handle, the electric knife head is tubular, and the electrodes are telescopically arranged in the electric knife head. The movable ground is provided with a slide block, which is connected with the electrode, and the electrode is controlled to extend or retract the electric knife head by moving the slide block. In the electric knife pen provided by the p...

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned electric knife pen discloses that the scalpel can be retracted, it can only be stored and used, and still cannot solve the technical problem of accurate and fast switching of the existing scalpel during the same operation, especially when encountering fine surgery and large areas. When the operation needs to be completed in the same operation, it is even more difficult to meet the needs of the spinal scalpel during use, resulting in long replacement and operation time of the spinal operation, and increasing the possibility of cross-infection during the operation

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