Electrical mapping and cryo ablating with a balloon catheter

  • US 20090299355A1
  • Filed: 05/27/2008
  • Published: 12/03/2009
  • Est. Priority Date: 05/27/2008
  • Status: Active Grant
First Claim
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1. A method of ablating body tissue, the method comprising:

  • (a) locating an inflatable balloon portion of a cryotherapy balloon catheter at a treatment site internal to a patient'"'"'s body, and inflating the inflatable balloon portion;

    (b) employing electrodes that are disposed on an expandable surface of the inflatable balloon portion to electrically characterize body tissue at the treatment site;

    (c) ablating the body tissue by supplying a cryotherapy agent to the inflatable balloon portion to cool the body tissue to a therapeutic temperature;

    (d) employing the electrodes to determine whether the ablating caused desired electrical changes in the body tissue; and

    (e) repeating (c) and (d) when it is determined that the ablating did not cause the desired electrical changes.

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