CPC A61B 18/1492 (2013.01) [A61B 18/1206 (2013.01); A61B 18/14 (2013.01); A61B 2017/00973 (2013.01); A61B 2018/00196 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00589 (2013.01); A61B 2018/00607 (2013.01); A61B 2018/00982 (2013.01); A61B 2018/126 (2013.01); A61B 2018/1246 (2013.01); A61B 2018/1253 (2013.01); A61B 2018/1407 (2013.01); A61B 2018/1427 (2013.01); A61B 2018/1435 (2013.01); A61B 2018/1467 (2013.01); A61B 2018/1475 (2013.01); A61B 2218/002 (2013.01)] | 21 Claims |
1. A method of preparing electrodes for ablative electrical treatment of tissue at a reference point, the method comprising:
extending a sheath containing a primary electrode and a secondary electrode, wherein the secondary electrode is contained within the primary electrode and initially coupled to move with the primary electrode;
moving a primary actuator configured to move the primary electrode to a first location near the reference point;
moving the primary actuator to move a shrouding device to permit access to a secondary actuator configured to move the secondary electrode; and
moving the secondary actuator to move the secondary electrode to a second location near the reference point.
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