Patent ID: 8257351
Filing Date: 2012-09-04
Classification: A61B

Abstract:
1. A catheter assembly, comprising: a catheter body including a proximal portion, an intermediate portion extending from the proximal portion and a distal portion extending from the intermediate portion; the distal portion forming a distally decreasing radius helix including an ablation section having a predetermined frontal diameter, the ablation section including a plurality of independently operable ablative elements; and an ablative energy source coupled to the ablation section to activate the ablative elements; wherein upon activation by the energy source, one or more of the plurality of ablative elements ablates a desired lesion pattern; wherein the catheter body forms a lumen extending from the proximal portion to the distal portion, and further wherein the ablation section is formed of a microporous polymer, and further wherein the catheter assembly further comprises a fluid source for supplying a liquid to the lumen such that upon activation of the ablative energy source, an energy is applied to fluid irrigated to an exterior surface of the ablation section.