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System and method for delivery of energy to tissue while compensating for collateral tissue

  • US 8,414,508 B2
  • Filed: 10/30/2009
  • Issued: 04/09/2013
  • Est. Priority Date: 10/30/2008
  • Status: Active Grant
First Claim
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1. A tissue ablation method for treating atrial fibrillation in a patient, said method comprising:

  • locating an ostium of a pulmonary vein;

    positioning an interventional catheter adjacent the ostium, the interventional catheter having an energy source;

    identifying collateral tissue adjacent the ostium;

    ablating tissue around the ostium with energy from the energy source so as to form a contiguous lesion circumscribing the ostium, the lesion blocking aberrant electrical pathways in the tissue so as to reduce or eliminate the atrial fibrillation; and

    modifying the ablating so as to avoid ablating or otherwise damaging the collateral tissue, wherein modifying comprises changing the continuous lesion circumscribing the ostium to a new lesion path that continuously circumscribes the ostium.

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