Torsion locking device and ultrasound knife system

Abstract

The invention discloses a torsion locking device and an ultrasound knife system, and belongs to the technical field of medical instruments. The provided torsion locking device comprises a locking wrench and a shifting wheel, wherein the locking wrench is connected with the shifting wheel in an inserted manner; a first pawl and a second pawl which can be abutted to each other and can be separated from each other in a sliding manner are arranged at the inserted position; and the first pawl and the second pawl are abutted to each other, the locking wrench can be used for driving the shifting wheel to rotate, then a tightened piece which is fixedly connected with the shifting wheel is driven to rotate, and the tightening purpose is achieved. The first pawl is arranged on a spring plate, when the tightening force of the tightened piece reaches a preset tightening force, under the effect of the spring plate, the first pawl and the second pawl are separate from each other in a sliding manner,and therefore, injury of the tightened piece and the torsion locking device due to continuing of tightening is avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a torsion locking device and an ultrasonic knife system applying the torsion locking device. Background technique [0002] The full name of ultrasonic knife is "ultrasonic cutting hemostatic knife", which is a new type of ultrasonic treatment equipment used in open and laparoscopic surgery. The ultrasonic knife converts electrical energy into mechanical energy through a transducer, and the ultrasonic system in the handle amplifies the kinetic energy on the knife shaft to cut tissue. Ultrasonic cutting hemostatic knife mainly uses the three major effects of high-frequency vibration, mechanical impact, cavitation effect and thermal effect, to cut tissue and stop bleeding. Clinically, compared with ordinary scalpels and other energy surgical equipment, ultrasonic cutting hemostatic knife has the advantages of high surgical precision, easy operation, small surgical trauma ar...

AI Technical Summary

Problems solved by technology

However, since the ultrasonic knife includes multiple components, the manufacturing errors and material properties of each component are different. When assembling the ultrasonic transducer and waveguide, the torque locking device is likely to fail due to excessive torque, and the torque cannot be replaced. The locking device can only replace the ultrasonic scalpel as a whole, resulting in unnecessary cost increase and operation time increase

At the same time, the locking device integrated with the ultrasonic knife is not convenient for the user to apply force, resulting in inconvenient operation for the user and low assembly efficiency

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