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Stripe electrode transducer for use with therapeutic ultrasonic radiation treatment

  • US 6,039,689 A
  • Filed: 03/11/1998
  • Issued: 03/21/2000
  • Est. Priority Date: 03/11/1998
  • Status: Expired due to Term
First Claim
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1. Apparatus for providing therapeutic ultrasonic radiation for treatment of tissue, comprising:

  • a transducer in the shape of a partial sphere formed of piezoelectric material having first and second radially separated surfaces;

    a conductive electrode on each of said surfaces, at least one of said electrodes being segmented into electrode segments said electrode segments including segments on opposite sides of a central plane;

    and a circuit for selectively providing electrical signals to said electrodes to provide ultrasonic radiation patterns at a focal plane of said transducer which provide a narrow beam width of thermal effect in said central plane and a broad beam width of thermal effect in a plane which is perpendicular to said central plane.

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