CPC A61B 18/00 (2013.01) [A61B 18/06 (2013.01); A61B 18/082 (2013.01); A61B 18/1492 (2013.01); A61B 18/24 (2013.01); A61B 2017/00199 (2013.01); A61B 2017/320069 (2017.08); A61B 2018/00267 (2013.01); A61B 2018/00291 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00791 (2013.01); A61B 2018/00839 (2013.01); A61B 2018/00994 (2013.01); A61B 2018/0212 (2013.01); A61B 2018/1861 (2013.01); A61B 2034/301 (2016.02); A61B 2090/065 (2016.02); A61M 25/0155 (2013.01); A61M 25/0158 (2013.01); A61M 2205/0216 (2013.01)] | 18 Claims |
1. An ablation system comprising:
an ablation catheter comprising:
a shaft including an irrigation lumen, a proximal end, a distal portion and a distal end;
an ablation element configured to deliver energy to tissue; and
a force maintenance assembly comprising a force maintenance element configured to control and/or assess contact force between the ablation element and cardiac tissue, wherein the force maintenance element comprises a piston including the ablation element, the piston extending from the shaft distal end and at least a portion of the piston translates linearly within the shaft distal portion,
wherein the piston comprises a hydraulic piston comprising at least one irrigation port configured to allow the hydraulic fluid to exit from the irrigation lumen, and wherein the force maintenance assembly is configured to control a hydraulic fluid flow to the hydraulic piston and out of the at least one irrigation port to adjust, maintain, and control a differential hydraulic pressure that the hydraulic piston exerts on and/or against the tissue; and
a console configured to operably attach to the ablation catheter and comprising:
an energy delivery assembly configured to provide energy to the ablation element.
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