Ablation catheter

摘要

An ablation catheter 50 for performing a medical procedure on a patient comprising an elongated, flexible, tubular body member 76 having a proximal end, a distal end and a lumen extending therebetween; a first control shaft 48 coaxially disposed and slidingly received within the lumen of the tubular body member; and a flexible carrier assembly 85 retractable within the tubular body member including at least two discrete ablation elements configured to deliver energy to tissue; wherein retraction of the first control shaft causes the at least two discrete ablation elements to transform from a near linear geometry to a partial helical geometry; and a second control shaft 57 slidingly received within the tubular body member, wherein a proximal end of the carrier assembly is attached to the second control shaft, and a distal end of the carrier assembly is attached to the first control shaft.