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Radio frequency pulmonary vein isolation

  • US 20030144658A1
  • Filed: 01/31/2002
  • Published: 07/31/2003
  • Est. Priority Date: 01/31/2002
  • Status: Active Grant
First Claim
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1. A method for electrically isolating a cardiac chamber, comprising the steps of:

  • introducing a coil into a pulmonary vein proximate an ostium of said pulmonary vein, wherein a principal axis of said coil is substantially aligned coaxially with said pulmonary vein;

    circumferentially engaging said coil with an inner wall of said pulmonary vein to define a circumferential region of contact between said coil and said pulmonary vein; and

    while maintaining said circumferential region of contact, conducting radiofrequency energy from said coil to said circumferential region of contact to ablate tissue in an ablation region of said pulmonary vein.

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