Patent ID: 8235988

Claim:
An ablation catheter system comprising: a handle including an actuator; a catheter coupled to the handle defining a lumen extending through a length of the catheter, the catheter including a catheter tip portion at a distal end of the catheter; and an electrode coupled to the handle with lines extending through the lumen of the catheter, the electrode being configured to be constrained within the catheter tip portion of the catheter and configured to be deployed from the catheter tip portion and self expand to an expanded configuration, wherein the electrode comprises a tip portion configured to self center the electrode within a pulmonary vein with a proximal portion of the electrode configured to abut against tissue adjacent the ostium of the pulmonary vein, the electrode including a frame with interconnecting frame struts defining a multi-cellular structure, the interconnecting frame struts extending in the expanded configuration to exhibit a conical configuration.