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Apparatus and method for linear lesion ablation

  • US 5,800,482 A
  • Filed: 03/06/1996
  • Issued: 09/01/1998
  • Est. Priority Date: 03/06/1996
  • Status: Expired due to Term
First Claim
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1. An apparatus for creating linear lesions in body tissue, the apparatus comprising:

  • an elongate support member proportioned for insertion and manipulation through human vessels, the support member having an elongate ablation section;

    at least one electrode carried by the ablation section of the support member;

    a fluid permeable deformable member at least partially covering the electrodes;

    means for delivering current to the electrodes;

    means for delivering conductive fluid through the deformable member to the ablation section to cause said fluid to create a conductive path between the electrodes and the tissue when the electrodes are positioned adjacent body tissue; and

    a covering on the deformable member, the covering formed of a material substantially impermeable to fluid, the covering including at least one opening sized to allow passage of fluid out of the covering.

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