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DISTAL BALLOON IMPEDANCE AND TEMPERATURE RECORDING TO MONITOR PULMONARY VEIN ABLATION AND OCCLUSION

  • US 20150157382A1
  • Filed: 12/04/2014
  • Published: 06/11/2015
  • Est. Priority Date: 12/06/2013
  • Status: Active Grant
First Claim
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1. A method of assessing lesion quality in pulmonary vein ostium tissue, the method comprising:

  • recording a first set of impedance measurements from an electrode on a balloon catheter having a treatment element at a distal portion;

    recording a second set of impedance measurements from the electrode;

    determining a first impedance slope using the first set of impedance measurements and determining a second impedance slope using the second set of impedance measurements;

    comparing the first slope to a first reference slope and comparing the second slope to a second reference slope;

    determining whether the balloon catheter is creating a permanent lesion in the pulmonary vein ostium based on the comparison of the first slope to the first reference slope and the second slope to the second reference slope; and

    repositioning the treatment element when it is determined that the balloon catheter is not creating a permanent lesion in the pulmonary vein ostium tissue.

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