Ultrasonic transducer in lithotripters

US5209222A · kind A · utility

Assignee

• Dornier Medizintechnik GmbH · DE

Inventors

• Thomas Viebach · Pischertshofen, DE
• Roland Denk · Munich, DE
• Alexander Heese · Munich, DE
• Anton Haas · Ybbs an der Donau, AT
• Rainer Kreibich · Munich, DE

Key dates

• Filing date: Dec 19, 1990
• Grant date: May 11, 1993
• Expiry date: Dec 19, 2010

Classification

• Technology area (CPC G): Physics
• CPC primary: G10K15/043
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A lithotripter having a shockwave generator having a cavity filled with water, further having an ultrasonic, locating transducer mounted by means of a holding device which includes metallic inner and outer shells each having a large acoustic impedance as compared with water and an acoustically attenuating layer interposed between the two shells; the shells are spaced from each other so that the shockwaves will be eliminated by interference.