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Perfusion dilatation catheter with expanded support coil

  • US 5,891,090 A
  • Filed: 02/07/1997
  • Issued: 04/06/1999
  • Est. Priority Date: 03/14/1994
  • Status: Expired due to Term
First Claim
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1. A balloon dilatation catheter having perfusion capabilities, comprising:

  • a) an elongated shaft having proximal and distal ends, proximal and distal shaft sections, a port in the distal end, a first inner lumen extending within at least the distal shaft section to the port in the distal end which is configured to slidably receive a guidewire therein and a second inner lumen extending through the proximal shaft section and the distal shaft section to a location in the distal shaft section spaced from the distal end;

    b) an inflatable balloon on the distal shaft section having an interior in fluid communication with the second inner lumen;

    c) an expanded helical coil supporting the first inner lumen within the distal shaft section, andd) a plurality of elongated perfusion ports in the distal catheter shaft section proximal to the inflatable balloon, at least one of said elongated perfusion ports exposing a plurality of turns of the expanded helical coil and being in fluid communication with the first inner lumen extending within the distal shaft section.

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