US 11,918,280 B2
Methods and systems to combine RF ablation therapy with device navigation
Marshall L. Sherman, Cardiff By The Sea, CA (US); Catherine R. Condie, Shoreview, MN (US); Trenton J. Rehberger, Minneapolis, MN (US); Steven J. Fraasch, Maple Grove, MN (US); and Mark T. Stewart, Lino Lakes, MN (US)
Assigned to Medtronic Ablation Frontiers LLC, Minneapolis, MN (US)
Filed by Medtronic Ablation Frontiers LLC, Minneapolis, MN (US)
Filed on Jun. 18, 2020, as Appl. No. 16/904,692.
Application 16/904,692 is a division of application No. 15/277,404, filed on Sep. 27, 2016, granted, now 10,722,302.
Claims priority of provisional application 62/235,777, filed on Oct. 1, 2015.
Prior Publication US 2020/0315703 A1, Oct. 8, 2020
Int. Cl. A61B 18/14 (2006.01); A61B 5/00 (2006.01); A61B 5/283 (2021.01); A61B 5/304 (2021.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01); A61B 18/02 (2006.01); A61B 18/12 (2006.01); A61B 34/20 (2016.01); A61B 90/00 (2016.01)
CPC A61B 18/1492 (2013.01) [A61B 5/283 (2021.01); A61B 5/304 (2021.01); A61B 5/6852 (2013.01); A61B 18/1233 (2013.01); A61B 2017/00044 (2013.01); A61B 2018/0016 (2013.01); A61B 2018/00357 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00875 (2013.01); A61B 18/0206 (2013.01); A61B 2018/0212 (2013.01); A61B 2018/124 (2013.01); A61B 2018/128 (2013.01); A61B 2018/1407 (2013.01); A61B 2018/1467 (2013.01); A61B 2034/2053 (2016.02); A61B 2090/062 (2016.02)] 14 Claims
OG exemplary drawing
 
1. A method of determining a location of a treatment device during an ablation procedure within a patient, the method comprising:
delivering ablation energy from an ablation electrode of the treatment device to an area of tissue;
delivering navigation energy to a plurality of external patch electrodes from a plurality of navigation energy sources, the navigation energy delivered by each of the plurality of navigation energy sources being a same frequency;
transmitting a plurality of voltage signals from a mapping electrode of the medical device to a processing unit, the processing unit time-division multiplexing the voltage signals, wherein the processing unit time-division multiplexes the voltage signals in each of a first plane, a second plane, and a third plane; and
determining a location of the medical device within a patient based on the time-division multiplexed voltage signals.