US 11,864,825 B2
Ablation catheter with selective radial energy delivery
Debby Highsmith, Laguna Niguel, CA (US)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on May 2, 2018, as Appl. No. 15/969,579.
Prior Publication US 2019/0336205 A1, Nov. 7, 2019
Int. Cl. A61B 18/14 (2006.01); A61B 18/12 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1492 (2013.01) [A61B 18/12 (2013.01); A61B 18/14 (2013.01); A61B 2018/00011 (2013.01); A61B 2018/0016 (2013.01); A61B 2018/00029 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00636 (2013.01); A61B 2018/00702 (2013.01); A61B 2018/00791 (2013.01); A61B 2018/00839 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/124 (2013.01); A61B 2018/1467 (2013.01); A61B 2018/1497 (2013.01); A61B 2218/002 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An electrode assembly configured to be disposed longitudinally over a distal portion of a cylindrical catheter body proximal to a tip of the catheter body, the electrode assembly comprising:
a flexible substrate forming a cylinder over the distal portion of the cylindrical catheter body proximal the tip, the cylindrical flexible substrate having: i) a first independently controlled ablation electrode formed by a first longitudinal electrically conducting layer applied directly to the outer surface of the cylindrical flexible substrate, ii) a second independently controlled ablation electrode formed by a second longitudinal electrically conducting layer applied directly to the outer surface of the cylindrical flexible substrate, iii) a first plurality of associated microelectrodes formed within a perimeter of the first ablation electrode, wherein an empty space is disposed between the first ablation electrode and at least one microelectrode of the first plurality of microelectrodes, and iv) a second plurality of associated microelectrodes formed within a perimeter of the second ablation electrode, wherein the first and second ablation electrodes and their associated microelectrodes, respectively, are positioned diametrically opposed to each other circumferentially on the cylindrical flexible substrate.