Patent ID: 9050106
Filing Date: 2015-06-09
Classification: A61B

Abstract:
1. An ablative catheter for nerve modulation through a wall of a blood vessel, the catheter comprising: a catheter sheath having a proximal end, a distal end, and a lumen extending from the proximal to the distal end; an elongate member extending along a central elongate axis within the lumen of the catheter sheath, the elongate member having a proximal end and a distal end; an expandable ablative member coupled to the distal end of the elongate member having one or more insulative sections connected to a bare electrode section; wherein the ablative member is configured to switch between a collapsed position and an expanded position extending out of the distal end of the catheter sheath such that a portion of the insulative section contacts the wall of the blood vessel and the bare electrode section is disposed at a distance from the wall of the blood vessel, the expandable ablative member having a generally helical shape of variable outer diameter; and wherein the ablative member is an expandable wire configured to form two or more humps and one or more troughs in between the two or more humps in the expanded position such that the insulative sections form the two or more humps and the bare electrode section forms the one or more troughs.