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Angioplasty apparatus facilitating rapid exchanges and method

  • US 5,300,085 A
  • Filed: 01/27/1993
  • Issued: 04/05/1994
  • Est. Priority Date: 04/15/1986
  • Status: Expired due to Term
First Claim
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1. An elongated catheter for perfusing blood distal to an occlusion within a coronary artery which facilitates the rapid advancement or exchange thereof over a guidewire having a distal portion disposed across the occlusion without the utilization of an exchange wire or an extension wire, comprising:

  • a) an elongated catheter shaft having proximal and distal ends, a first inner lumen extending therein, one or more distal perfusion ports located at or near the distal end of the catheter shaft, one or more proximal perfusion ports spaced proximally from the distal perfusion ports a distance of at least equal the length of the occlusion and spaced distally a substantial distance from the proximal end of the catheter shaft, both the proximal and the distal perfusion ports being in fluid communication with the first inner lumen; and

    b) a second inner lumen which is adapted to slidably receive a guidewire therein and which extends proximally through a distal portion of the catheter shaft from a first guidewire port in the distal end of the catheter shaft to a second guidewire port spaced at least about 10 cm proximally from the distal end and a substantial distance from the proximal end of the catheter shaft.

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