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Stepped centering balloon for optimal radiation delivery

  • US 6,605,031 B1
  • Filed: 02/16/2000
  • Issued: 08/12/2003
  • Est. Priority Date: 09/22/1999
  • Status: Active Grant
First Claim
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1. A catheter for delivery of intravascular radiation therapy comprising:

  • an elongate, tubular shaft, said shaft having a shaft diameter, and a lumen for receiving a radiation source; and

    a balloon having a stepped centering segment attached to said elongate, tubular shaft, said stepped centering segment further comprising;

    a central segment, said central segment having a first diameter and proximal and distal ends;

    first step segments adjacent to each of said proximal and distal ends of said central segment;

    offset segments adjacent to each of said first step segments, said offset segments having a second diameter; and

    second step segments adjacent to each said offset segments and having a third diameter that is less than said second diameter.

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