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Catheter for obstructed stent

  • US 5,749,914 A
  • Filed: 05/28/1996
  • Issued: 05/12/1998
  • Est. Priority Date: 01/06/1989
  • Status: Expired due to Fees
First Claim
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1. A device for ablation of obstructive material within a stent, the device comprising:

  • an elongate flexible tube having a distal end and a proximal end and an interior surface therebetween, the tube defining an axial direction along a length of the tube and a radial direction radially away from the tube;

    a first ablation electrode positioned within said interior surface proximate the distal end;

    an ablation power supply in electrical communication with said ablation electrode;

    wherein said first ablation electrode is shielded from physical contact with the stent by said tube when the first ablation electrode is positioned within the stent; and

    wherein said first ablation electrode is positioned so that it is electrically unobstructed in the radial direction by the tube while being shielded from physical contact with the stent, thereby being electrically operative in the radial direction with respect to its position along the axial direction.

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