Abstract: An ablation balloon catheter includes an outer catheter shaft and an inflatable balloon coupled at a first end to the outer catheter shaft. The catheter includes a translatable nose tip to which a second end of the inflatable balloon is coupled. The catheter has a first electrode basket having a plurality of first splines and a second electrode basket having a plurality of second splines. The second electrode basket is disposed over the first electrode basket and the plurality of first splines are rotationally offset from the plurality of second splines. One or more of the first splines support one or more electrodes and one or more of the second splines support one or more electrodes. The first and second electrode baskets have a collapsed state when the balloon is deflated and a deployed state when the balloon is inflated.

Abstract: A method for ablating target tissue includes the steps of: (a) delivering an ablation balloon catheter to the target tissue, wherein the ablation balloon catheter includes a compliant balloon, a visualization device; and an electrode array that is visible to the visualization device, each electrode being configured to deliver ablation energy, wherein the electrode array is independently movable relative to the compliant balloon; (b) isolating the target tissue such that at least one electrode of the electrode array is in contact with the target tissue; and (c) delivering the ablation energy to those electrodes of the electrode array that are confirmed, using the visualization device, to be in contact with target tissue.

Abstract: An ablation catheter that includes a shaft having a distal end and a balloon coupled to the shaft. The balloon has an inner surface and an opposite outer surface. The inner surface has a proximal region including a proximal balloon end, a main center region, and a distal region including a distal balloon end. The ablation catheter also includes an energy emitter disposed inside the balloon and being configured to move both axially and rotationally within the inside of the balloon. The ablation catheter includes a thermally resistant coating disposed along the inner surface of the balloon within at least the main center region of the inner surface of the balloon. The thermally resistant coating is formed of a material selected from a group consisting of: silicone rubber, polyisoprene, polyurethane.