Patent ID: 9717555
Date: 2017-08-01
CPC Classifications: A61B

Claim:
1. A catheter comprising: an elongated body having a longitudinal axis and proximal and distal ends; a distal assembly mounted on the distal end of the elongated body, the elongated body and distal assembly being configured for insertion into a renal artery, the distal assembly including a shape-memory support member, and having a helical form with a pitch ranging between 0.5 cm and 1.9 cm and a diameter ranging between 4 mm and 10 mm, the helical form including a plurality of turns and subtending greater than 520 degrees, the helical form being oriented at an oblique angle of about 30 degrees to about 60 degrees relative to the longitudinal axis when unconstrained; at least one irrigated ablation ring electrode mounted on the distal assembly, wherein the shape-memory support member is preformed with a helical shape having a diameter of about 10 mm and a helical shape length of about 20 mm electrode edge to edge, and a generally straight length of about 36 mm from a proximal edge of a most proximal ring electrode of the at least one ring electrode to a distal tip of the distal assembly; and a control handle mounted at the proximal end of the elongated body.