Patents Represented by Attorney R. D. Marchant

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  • Cutting head for ultrasonic lithotripsy
    Patent number: 4823793
    Abstract: A cutting head for attachment to the end of the wire probe of an ultrasonic kidney stone disintegration instrument. The cutting head has a plurality of circumferentially arranged teeth formed at one end thereof to provide a cup-shaped receptacle for kidney stones encountered during the disintegration procedure. An integral reduced diameter collar diminishes stress points in the wire and reduces breakage thereof.
    Type: Grant
    Filed: October 30, 1985
    Date of Patent: April 25, 1989
    Assignee: The United States of America as represented by the Administrator of the National Aeronuautics & Space Administration
    Inventors: Earl D. Angulo, Roger Goodfriend