US 11,701,158 B2
Ablation system with force control
Derrick Ren-Yu Chou, San Diego, CA (US); Marcus Frederick Julian, Vista, CA (US); Steven Anthony Yon, San Diego, CA (US); Randell L. Werneth, Eagle, ID (US); Alexander Higgins, San Diego, CA (US); Ricardo Roman, Chula Vista, CA (US); Alexander J. Asconeguy, Murrieta, CA (US); Christoph Scharf, Horgen (CH); Dennis O'Brien, Oceanside, CA (US); Rob Andre Pescar, San Diego, CA (US); Ahmad Falahatpisheh, San Marcos, CA (US); Tom Esbeck, Carlsbad, CA (US); Gerald M. Stobbs, III, Alpine, CA (US); Leo Mariappan, Oceanside, CA (US); Brandon Pratt Noheaikaika Lee, Vista, CA (US); James Calvin Allan, Boise, ID (US); Michael C. Oliveira, San Marcos, CA (US); Daniel Welsh, Encinitas, CA (US); R. Maxwell Flaherty, Topsfield, MA (US); and J. Christopher Flaherty, Auburndale, FL (US)
Assigned to ACUTUS MEDICAL, INC., Carlsbad, CA (US)
Appl. No. 16/335,893
Filed by Acutus Medical, Inc., Carlsbad, CA (US)
PCT Filed Oct. 11, 2017, PCT No. PCT/US2017/056064
§ 371(c)(1), (2) Date Mar. 22, 2019,
PCT Pub. No. WO2018/071490, PCT Pub. Date Apr. 19, 2018.
Claims priority of provisional application 62/504,139, filed on May 10, 2017.
Claims priority of provisional application 62/406,748, filed on Oct. 11, 2016.
Prior Publication US 2020/0015876 A1, Jan. 16, 2020
Int. Cl. A61B 18/00 (2006.01); A61B 34/30 (2016.01); A61B 90/00 (2016.01); A61B 17/32 (2006.01); A61B 18/06 (2006.01); A61B 18/08 (2006.01); A61B 18/14 (2006.01); A61B 18/24 (2006.01); A61B 17/00 (2006.01); A61B 18/02 (2006.01); A61B 18/18 (2006.01); A61M 25/01 (2006.01)
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
OG exemplary drawing
 
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.