Extracorporeal shock wave lithotripter fluid-electric pipe throttling valve

Abstract

The invention discloses a throttling valve for hydraulic and electric pipelines of an extracorporeal shock wave lithotripter. One end of the pipe body is connected with a first- and second-stage constriction tube, the end of the second-stage constriction tube is connected with a three-stage constriction tube, and the other end of the pipe body is plugged. A movable inner tube, elastically connected between the movable inner tube and the pipe body, a pressure relief hole is opened on the tube wall of the movable inner tube, a plug joint is provided at the end of the movable inner tube, and a limit flange is provided on the outer periphery of the tube wall of the movable inner tube , There is also a runner on the movable inner tube, and the rotating runner can open and close the hydraulic and electric pipeline. The pipe body of the hydraulic pipeline throttle valve of the extracorporeal shock wave lithotripter of the present invention is designed to be gradually tightened, so that a part of the impact force generated by the internal fluid can be partially buffered, and the generation of turbulent flow inside the fluid can be reduced. At the same time, the elastic movable casing The setting can absorb part of the internal energy of the fluid, and the excessive internal pressure can be discharged from the pressure relief hole, which greatly improves the stability of the hydraulic pipeline.

Description

technical field [0001] The invention relates to the field of medical equipment, more precisely, it relates to a throttle valve for hydraulic and electric pipelines of an extracorporeal shock wave lithotripter. Background technique [0002] The basic principle of shock wave generation is to form a high-energy-density, high-temperature, high-pressure plasma area on the discharge channel through high voltage, high current, and instantaneous discharge, and quickly convert electrical energy into heat energy, light energy, force energy, and sound energy. The discharge process The middle discharge channel expands rapidly, forming a pressure pulse in the water medium, that is, a shock wave. In addition to hydraulic shock wave sources, there are also shock wave sources such as electromagnetic wave sources and piezoelectric crystal wave sources. Generally speaking, all lithotripters are composed of the most basic two parts, that is, the shock wave source capable of crushing stones ...

AI Technical Summary

Problems solved by technology

Under the influence of instantaneous large energy release, the hydraulic pipeline of hydraulic shock wave source has obvious internal fluid reflux and vortex, which is easy to cause low-frequency vibration of the pipe body, which in turn affects the stability of shock wave generation

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