US 12,239,465 B2
Balloon catheter with diagnostic electrodes, far field detection electrodes, and guidewire
Assaf Govari, Haifa (IL); and Vadim Gliner, Haifa (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Apr. 28, 2023, as Appl. No. 18/309,081.
Application 18/309,081 is a continuation of application No. 16/553,066, filed on Aug. 27, 2019, granted, now 11,660,050.
Claims priority of provisional application 62/750,461, filed on Oct. 25, 2018.
Prior Publication US 2023/0255562 A1, Aug. 17, 2023
Int. Cl. A61B 18/18 (2006.01); A61B 5/00 (2006.01); A61B 5/287 (2021.01); A61B 5/361 (2021.01); A61M 25/09 (2006.01)
CPC A61B 5/6853 (2013.01) [A61B 5/287 (2021.01); A61B 5/361 (2021.01); A61B 5/6859 (2013.01); A61M 25/09 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A medical apparatus, comprising:
a shaft extending along a longitudinal axis and configured to be inserted into an organ of a patient;
a flexible end effector disposed at a distal end of the shaft, the flexible end effector comprising a plurality of spines, each spine of the plurality of spines comprising:
a plurality of diagnostic electrodes disposed on a first side of the spine, the plurality of diagnostic electrodes each being configured to sense diagnostic signals when in contact with tissue;
and a reference electrode disposed on a second side of the spine opposite the diagnostic electrode, the reference electrode being electrically insulated from each diagnostic electrode of the plurality of diagnostic electrodes and the tissue and configured to sense interfering signals, the reference electrode being larger than each diagnostic electrode of the plurality of diagnostic electrodes.
 
13. A medical system, comprising:
a flexible end effector disposed at a distal end of a shaft extending along a longitudinal axis, the flexible end effector comprising a plurality of spines, each spine of the plurality of spines comprising:
a plurality of diagnostic electrodes disposed on a first side of the spine, each diagnostic electrode of the plurality of diagnostic electrodes being configured to sense diagnostic signals when in contact with tissue; and
a reference electrode disposed on a second side of the spine opposite the plurality of diagnostic electrodes, the reference electrode being (1) electrically insulated from each diagnostic electrode of the plurality of diagnostic electrodes and the tissue, (2) larger than each diagnostic electrode of the plurality of diagnostic electrodes, and (3) configured to sense interfering signals; and a processor, which is configured to:
receive the diagnostic signals sensed by at least one diagnostic electrode of the plurality of diagnostic electrodes;
receive the interfering signals sensed by at least one reference electrode; and
calculate corrected diagnostic signals by subtracting the interfering signals from the diagnostic signals.