Sleeve assembly and ultrasonic knife

Abstract

The present invention discloses a sleeve assembly and an ultrasonic knife. The sleeve assembly comprises an outer sleeve, an inner sleeve, an ultrasonic guide rod, a clamping arm, a bent pipe fitting and a stretching assembly, and the outer sleeve is provided with a bent part which is driven by axial movement of the bent pipe fitting to be bent; a tool bit of the ultrasonic guide rod extends out of the far end of the outer sleeve and forms a clamping mechanism capable of being opened and closed with the clamping arm, the stretching assembly drives the outer sleeve and drives the clamping arm to move axially, and in the moving process of the clamping arm, after the near end of the clamping arm is limited by the end face of the far end of the bent pipe fitting, pivot rotation is generated at the same time to achieve clamping of the clamping mechanism; and the bent pipe fitting, the stretching assembly and the ultrasonic guide rod are in flexible connection with the corresponding positions of the bent part, and the outer sleeve can drive the clamping arm to rotate around the axis of the ultrasonic guide rod through autorotation in the bending or straight state. According to the integrated sleeve assembly, opening, closing and autorotation of the clamping mechanism and bending of the sleeve assembly can be achieved at the same time, and the use flexibility and control precision of the clamping mechanism are improved.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a sleeve assembly and an ultrasonic scalpel using the sleeve assembly. Background technique [0002] As a surgical instrument that converts electrical energy into vibrational mechanical energy, the ultrasonic scalpel transmits the mechanical energy generated by the vibration to the tissue in contact with it, causing the protein in the tissue to coagulate and break, achieving rapid and precise cutting. Ultrasonic scalpel has been popularized and used in clinical operations because of its fine cutting head and fast cutting efficiency, especially in the cutting and coagulation of some fine tissues such as blood vessels. [0003] Since the ultrasonic scalpel needs to be inserted into the human body for operation, there are high cleanliness and sterility requirements for the ultrasonic scalpel head and the entire operating components, so as to avoid infection of the patien...

AI Technical Summary

Problems solved by technology

The blade part of the existing ultrasonic scalpel requires careful installation between the outer sleeve and the internal operating components, and does not form an integration. The damage of the internal control needs to be replaced as a whole, which further increases the use cost of the ultrasonic scalpel. , but also increase the difficulty of cleaning

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