US 12,290,306 B2
Using unipolar configuration for irreversible-electroporation (IRE)
Assaf Govari, Haifa (IL); Andres Claudio Altmann, Haifa (IL); and Yuri Shamis, Haifa (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by BIOSENSE WEBSTER (ISRAEL) LTD., Yokneam (IL)
Filed on Oct. 19, 2020, as Appl. No. 17/073,467.
Prior Publication US 2022/0117655 A1, Apr. 21, 2022
Int. Cl. A61B 18/14 (2006.01); A61B 18/12 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1492 (2013.01) [A61B 18/1206 (2013.01); A61B 2018/00178 (2013.01); A61B 2018/00214 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00613 (2013.01); A61B 2018/124 (2013.01); A61B 2018/1253 (2013.01); A61B 2018/1266 (2013.01); A61B 2018/1467 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A pulsed field ablation (PFA) system, comprising:
multiple electrodes coupled to a distal end of a catheter configured for insertion into an organ of a patient;
a body-surface electrode configured to be attached to a skin of the patient;
a PFA generator, which is configured to be electrically connected to the multiple electrodes of the catheter and to the body-surface electrode, and to generate Direct-Current (DC) PFA pulses, wherein the DC PFA pulses are configured for ablating target tissue of the organ; and
a processor, which is configured to control the PFA generator to apply the DC PFA pulses between the multiple electrodes and the body-surface electrode while the multiple electrodes are placed in contact with target tissue of the organ and the body-surface electrode is in contact with the skin of the patient; and
a switching assembly connected between a proximal end of the catheter and the PRA generator, wherein the switching assembly is only configured for connecting all the multiple electrodes to one lead of a PFA generator output prior to ablating the target tissue with the DC PFA pulses, and wherein the connecting all the multiple electrodes to one lead is based on electrically shorting the multiple electrodes.