Differential pressure motor and method for operating differential pressure motor

Abstract

The invention relates to a differential pressure motor which comprises two working pistons, a rod, an at least partially cylindrical hollow space and a valve piston, the working piston and the rod aremovably arranged in the hollow space; five complete openings are formed in the wall of the hollow space; the valve piston is movably arranged between the valve piston and the working piston. The working piston can be driven by the pushing force of the working piston and can move in the cylindrical hollow space; the valve piston and the five complete openings form a valve, and when a first pressure and a second pressure are applied to three of the five complete openings, the valve can be used for controlling the alternating action of the first pressure and the second pressure on the working surface of the working piston, so that periodic movement of the working piston is generated in the hollow cylinder, and drives the periodic movement of the valve piston. The invention also relates to asurgical drive system, to a medical lavage system for debriding soft tissue and / or bone tissue, to a medical device for brushing, filing or sawing soft tissue and / or bone tissue with a differential pressure motor, and to a method for operating a differential pressure motor.

Description

technical field [0001] The present invention relates to a differential pressure motor, a surgical drive system with such a differential pressure motor, a medical irrigation system for debridement of soft tissue and / or bone tissue with such a differential pressure motor and a device for using such a differential pressure motor A medical device for brushing, rasping or sawing soft tissue and / or bone tissue with a differential pressure motor, and a method for operating the differential pressure motor. Differential pressure motors are suitable for driving medical devices for irrigation and debridement of soft and bone tissues. Medical devices driven by differential pressure motors are preferably designed for single use for hygienic reasons. Background technique [0002] Unfortunately, in orthopedic surgery, suppurative repair of microbially infected joint prostheses is necessary to some extent. Here, the infected joint prosthesis is removed and infected or dead tissue is remov...

Images