Connection mechanism between ultrasonic scalpel and transducer and ultrasonic scalpel using the connection method

Abstract

A connection mechanism between an ultrasonic scalpel and a transducer and an ultrasonic scalpel adopting the connection method. The connection mechanism of the present invention includes: a tightening turntable, which is a rotating body structure, and an ultrasonic knife is sleeved on the axis; one end of the tightening turntable is provided with a thread or a snap-fit ​​structure, which is used to connect with the handle part of the ultrasonic knife containing the transducer, The other end is a limiting plane, which is provided with a number of grooves for matching with the torque pins installed on the rotating cap; the rotating cap is a rotating body structure, and the axis forms a through hole for the ultrasonic knife to pass through; The side facing the tightening turntable is provided with several torsion pins protruding from the surface supported by springs, and the torsion pins can compress the springs to retract the surface under the action of force. The connection mechanism of the present invention is integrated with the ultrasonic knife, which saves the operation steps of installation and removal, eliminates the risk of loss, has stable and reliable torque values, and has a longer service life.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a connection mechanism between an ultrasonic knife and a transducer and an ultrasonic knife using the connection method. Background technique [0002] In the application technology of the ultrasonic knife, because the ultrasonic knife head and the transducer are of a separate structure, the two are connected by a threaded joint, and the tightening force needs to be controlled within a certain range during the connection, otherwise the ultrasonic knife cannot work normally, and serious can damage the cutter head or transducer. The commonly used fastening method is to add a set of plastic torque wrench. The torque wrench consists of two parts: the knob body and the rotating shaft. During use, the elastic deformation of the plastic on the rotating shaft is pressed by the knob body to control the tightening force. [0003] In the process of realizing the present invention, t...

AI Technical Summary

Problems solved by technology

[0004] (1) Each ultrasonic scalpel is provided with a torque wrench, which increases the cost of the device;

[0005] (2) The torque wrench is installed and removed through the front end of the instrument, which is inconvenient to operate;

[0006] (3) The torque wrench needs to be kept properly during use, otherwise it is easy to lose, which is very inconvenient in use;

[0007] (4) The torque wrench is provided by plastic elastic deformation, the torque value is unstable, and the torque value will become smaller and smaller after repeated use, and the plastic shrapnel is easy to break;

[0008] (5) Since the torque wrench is a separate accessory, it may be forgotten to sterilize the wrench during the disinfection process of the ultrasonic knife, so that the ultrasonic knife cannot be connected according to the set requirements and cause inconvenience

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