Patent ID: 6176703
Filing Date: 2001-01-23
Classification: A61B,A61C

Abstract:
Medical or dental treatment instrument for chip removing treatment of body tissue or a substitute material with an abrasive tool, said instrument comprising:a handpiece:a vibration part for supporting a tool and located in a front end area of said handpiece;a vibration generator arranged in the handpiece, said vibration generator being drivable by compressed air;a flexible compressed air supply line arranged to connect said vibration generator to a power supply; anda control device constructed and arranged to increase and decrease the output of said vibration part,said control device being formed by a control valve which includes a valve slide which controls the size of a valve opening in said compressed air supply line,said valve slide being moveable and arranged to be acted upon by pressure available at the vibration generator against the force of a spring; said valve slide having a control edge which is positioned to control the size of said valve opening.