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Transluminal devices, systems and methods for enlarging interstitial penetration tracts

  • US 6,561,998 B1
  • Filed: 04/07/1998
  • Issued: 05/13/2003
  • Est. Priority Date: 04/07/1998
  • Status: Expired due to Term
First Claim
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1. A method of enlarging a penetration tract formed between first and second anatomical structures in a human or veterinary patient, the method comprising the steps of:

  • forming a penetration tract that extends through a wall of the first anatomical structure, through a wall of the second anatomical structure and through any tissue located between the first and second anatomical structures;

    passing a guidewire into the penetration tract;

    providing an elongate, flexible tubular member having a hollow lumen extending therethrough sized to receive a guidewire, the tubular member having near its distal tip a debulking member including an electrode tip having at least one radio frequency-emitting electrode suitable for ablating tissue;

    passing the tubular member over the guidewire and into the penetration tract; and

    energizing the electrode tip to ablate tissue and enlarge the penetration tract.

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