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Percutaneous catheter and guidewire for filtering during ablation of myocardial or vascular tissue

  • US 7,326,226 B2
  • Filed: 11/03/2003
  • Issued: 02/05/2008
  • Est. Priority Date: 08/04/1999
  • Status: Expired due to Term
First Claim
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1. A percutaneous guidance catheter system, comprising:

  • an elongate member having a proximal end, a distal end and a first lumen therebetween;

    an expandable filtration assembly having an expanded configuration that defines a distally facing cavity, the expandable filtration assembly being attached to the elongate member proximally of the distal end of the elongate member and extending distally beyond the distal end of the elongate member, the cavity including a gap between the distal end of the elongate member and the expandable filtration assembly, the gap extending longitudinally both distally and proximally from the distal end and extending radially from the distal end; and

    a therapeutic catheter at least partially disposed in the first lumen of the elongate member.

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