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Ablation catheter assembly and method for isolating a pulmonary vein

  • US 20010007070A1
  • Filed: 12/08/2000
  • Published: 07/05/2001
  • Est. Priority Date: 04/05/1999
  • Status: Abandoned Application
First Claim
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1. A catheter assembly for treatment of cardiac arrhythmia comprising:

  • a catheter body including;

    a proximal portion, an intermediate portion extending from the proximal portion and defining a longitudinal axis, a distal portion extending from the intermediate portion and forming a helix, a first lumen extending from the proximal portion to the distal portion, an ablation section formed along the coil and defining a loop transverse to the longitudinal axis, the ablation section being formed of a microporous material in fluid communication with the first lumen to irrigate fluid from the first lumen to an exterior surface of the ablation section;

    at least one electrode associated with the ablation section; and

    a fluid source for supplying a liquid to the first lumen;

    wherein upon activation, the electrode supplies an ablation energy to fluid irrigated to the exterior surface of the ablation section for ablating a continuous, closed lesion pattern.

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