Rotary cutting operation assembly

Abstract

The invention discloses a rotary cutting operation assembly, comprising a cutter and a handle, wherein the handle is fixedly mounted on the cutter, the cutter at least comprises an external knife and an internal knife, a sampling groove is arranged in the front end of the external knife, the internal knife is sleeved in the external knife, the cutter further comprises a rotation driven member and a translation driven member, the rotation driven member is matched with a circumferential transmission of the internal knife in an axially sliding manner, the translation driven member is matched with the internal knife through a screw rod structure, the handle comprises a handle main body and a driving component, the driving component is mounted on the handle main body, and comprises a rotation driving member and a translation driving member, the rotation driving member is arranged to drive the rotation driven member to rotate, the translation driving member is arranged to drive the translation driven member, the rotation driven member drives the internal knife to rotate, and forms a rotation speed difference with the translation driven member, the internal knife is driven to do axial movement through the rotation speed difference, and therefore sampling of the sampling groove is realized. The rotary cutting operation assembly disclosed by the invention has the advantages of simple structure, convenience for assembly, easiness for operation in use and high sampling efficiency, and ensures a successful operation and no easy interference of the rotation and translation; the operation assembly is smooth and stable in operation; rotary cutting efficiency is high in operation; and the rotary cutting operation assembly is favorable for ensuring safety of the operation.

Description

technical field [0001] The invention relates to a living body detection and sampling device for medical operations, in particular to a rotary cutting operation assembly. Background technique [0002] During the operation, the doctor usually uses a rotary cutting tool to operate when sampling the living body or removing the lesion tissue in the patient. The operating components used for the rotary cutting operation on the market today include a knife and a handle. The knife usually includes an inner knife and an outer cover. The outer knife of the inner knife has a sampling groove along the radial direction at the front end of the outer knife; after puncturing, the tissue is sucked into the sampling groove under negative pressure, and the inner knife rotates forward to cut off the tissue and accommodate it into the front end of the inner knife; Of course, when puncturing, the inner knife will seal the sampling slot at the front end, and then back out of the sampling slot afte...

AI Technical Summary

Problems solved by technology

[0002] During the operation, the doctor usually uses a rotary cutting tool to operate when sampling the living body or removing the lesion tissue in the patient. The operating components used for the rotary cutting operation on the market today include a knife and a handle. The knife usually includes an inner knife and an outer cover. The outer knife of the inner knife has a sampling groove along the radial direction at the front end of the outer knife; after puncturing, the tissue is sucked into the sampling groove under negative pressure, and the inner knife rotates forward to cut off the tissue and accommodate it into the front end of the inner knife; Of course, when puncturing, the inner knife will seal the sampling slot at the front end, and then back out of the sampling slot after puncturing to the position. Carry out rotary cutting sampling; in the prior art, driving the rotation and translation of the inner knife is a separate and independent drive mechanism, which drives the inner knife to rotate through the motor drive, and at the same time pushes the inner knife to slide axially through the push rod, and then realizes the combination of rotation and translation to realize rotation. Cutting, and the driving mode of the push rod includes electric and manual, the manual operation is cumbersome and the efficiency is not high, and the electric drive needs to be equipped with a reducer to slowly push the inner knife, which makes the structure of the rotary cutting operation component complex and the overall weight is heavy , and the driving mechanism used for the rotation and translation of the inner knife is prone to interference, resulting in the locking of the inner knife, resulting in unstable operation of the rotary cutting operation components, which is likely to bring risks to the operation

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