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Circumferential ablation device assembly and methods of use and manufacture providing an ablative circumferential band along an expandable member

  • US 6,500,174 B1
  • Filed: 11/05/1999
  • Issued: 12/31/2002
  • Est. Priority Date: 07/08/1997
  • Status: Expired due to Term
First Claim
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1. A method for treating a region of tissue at a location where a pulmonary vein extends from an atrium, comprising:

  • expanding a balloon from a radially collapsed condition to a radially expanded condition with a volume of pressurized fluid within a chamber defined at least in part by the balloon such that a permeable section along an intermediate region of a working length of the balloon engages the region of tissue;

    ablatively coupling the pressurized fluid with the region of tissue across the permeable section of the balloon; and

    substantially blocking the pressurized fluid from ablatively coupling externally of the balloon along a non-permeable section of the working length.

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