US 12,262,941 B2
Temperature controlled short duration ablation with multiple electrodes
Assaf Govari, Haifa (IL); Andres Claudio Altmann, Haifa (IL); and Yaron Ephrath, Karkur (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Mar. 7, 2023, as Appl. No. 18/179,543.
Application 18/179,543 is a continuation of application No. 15/994,459, filed on May 31, 2018, granted, now 11,666,379.
Claims priority of provisional application 62/529,158, filed on Jul. 6, 2017.
Prior Publication US 2023/0200903 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
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 2018/00029 (2013.01); A61B 2018/0022 (2013.01); A61B 2018/00267 (2013.01); A61B 2018/00273 (2013.01); A61B 2018/00375 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00654 (2013.01); A61B 2018/00708 (2013.01); A61B 2018/00797 (2013.01); A61B 2018/00821 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/00928 (2013.01); A61B 2018/1467 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A system comprising:
a power supply configured to supply radiofrequency (RF) ablation energy to each of a plurality of electrodes deployed on a catheter so as to ablate tissue of an organ in contact with a respective one of the plurality of electrodes, each of the plurality of electrodes having a temperature sensor;
a temperature module configured to determine a temperature of the surface of the organ tissue in contact with each of the plurality of electrodes in response to receiving sensing signals from each of the electrode temperature sensors;
one or more processors coupled to the power supply and the temperature module;
a non-transitory computer readable medium storing a plurality of instructions, which when executed, cause the one or more processors to:
i) receive a predefined power of RF ablation energy to be delivered by each of the plurality of electrodes, a predefined time duration for delivering the predefined power by each of the plurality of electrodes and a predefined temperature threshold of the surface of the tissue in contact with each of the plurality of electrodes,
ii) identify an active group of the plurality of electrodes to be used for ablation and an inactive group of the plurality of electrodes, wherein a sum of the pre-determined power to be delivered by each electrode in the active group of electrodes does not exceed a maximum power of the power supply,
iii) cause the power supply to continue delivering power to each electrode in the active group of electrodes that has not delivered the predefined power for the predefined time duration when the temperature of the tissue in contact with the respective electrode does not exceed the temperature threshold,
iv) cause each electrode in the active group of electrodes that has not delivered the predefined power for the predefined time duration to become inactive when the temperature of the tissue in contact with the respective electrode exceeds the temperature threshold,
v) identify, in response to an electrode in the active group of electrodes becoming inactive, an electrode in the inactive group of electrodes to become active such that sum of the pre-determined power to be delivered by each electrode in the active group of electrodes does not exceed the maximum power of the power supply, and
vi) cause each electrode in the active group of electrodes that has delivered the predefined power for the predefined time duration to become inactive.