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Balloon angioplasty device

  • US 5,470,352 A
  • Filed: 10/29/1993
  • Issued: 11/28/1995
  • Est. Priority Date: 10/29/1993
  • Status: Expired due to Fees
First Claim
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1. A balloon angioplasty device for widening a path through which blood flows in an artery having plaque deposited on an inner wall thereof, the device having a catheter with a longitudinal axis and comprising:

  • an antenna for radiating an electric field having a component in a direction which is tangential to a boundary between said plaque and said inner wall of said artery;

    a balloon coupled to the catheter, said balloon having first and second opposing surfaces, wherein said balloon is disposed about said antenna; and

    a mode filter comprising at least one conductive strip disposed circumferentially around said balloon and concentrically about said longitudinal axis of said catheter for minimizing said electric field component radiated by said antenna in a direction which is tangential to said boundary between the plaque and the artery wall on which the plaque is deposited.

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