Patent ID: 9743973
Date: 2017-08-29
CPC Classifications: A61B

Claim:
1. A method for treating cardiac tissue, comprising: positioning a medical device having a longitudinal axis proximate an ostium such that an expanded first balloon of the medical device abuts cardiac tissue proximate to the ostium and at least a portion of an unexpanded second balloon located distal to the first balloon is positioned within the ostium, the first and second balloons being substantially enveloped within a third balloon, each of the first balloon and the second balloon having an anterior face and a posterior face, the anterior face of the first balloon lying in a plane that is at least substantially orthogonal to the longitudinal axis of the medical device, at least a portion of the anterior face of the first balloon being in contact with at least a portion of the posterior face of the second balloon when the first and second balloons are expanded; expanding the second balloon to substantially occlude the ostium; and ablating cardiac tissue with at least one of the first and second balloons.