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Variable stiffness heating catheter

  • US 8,282,677 B2
  • Filed: 01/11/2010
  • Issued: 10/09/2012
  • Est. Priority Date: 03/24/1999
  • Status: Expired due to Fees
First Claim
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1. A variable stiffness heating catheter for use in interventional vascular therapy, comprising:

  • a heating catheter shaft having a proximal end and a distal end, said heating catheter shaft including at least one electrically conductive member having a proximal end and a distal end;

    a reinforcing tube having a proximal portion and a distal portion, the reinforcing tube surrounding said at least one electrically conductive member, and said reinforcing tube having a surface defining a plurality of groups of axially oriented apertures configured to provide variations in stiffness along a length of the heating catheter shaft, each of said groups of axially oriented apertures including a plurality of axially aligned round holes; and

    at least one outer coaxial sheath over at least a portion of said at least one electrically conductive member and said reinforcing tube and covering said plurality of apertures of said reinforcing tube.

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