US 12,239,364 B2
Printed proximal electrodes of an expandable catheter for use as a common electrode
Assaf Govari, Haifa (IL); Andres Claudio Altmann, Haifa (IL); Christopher Thomas Beeckler, Brea, CA (US); Joseph Thomas Keyes, Sierra Madre, CA (US); and Kevin Justin Herrera, West Covina, CA (US)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Oct. 7, 2020, as Appl. No. 17/065,451.
Prior Publication US 2022/0104872 A1, Apr. 7, 2022
Int. Cl. A61B 5/287 (2021.01); A61B 5/00 (2006.01); A61B 18/14 (2006.01); A61B 18/00 (2006.01); A61B 18/12 (2006.01)
CPC A61B 18/1492 (2013.01) [A61B 5/287 (2021.01); A61B 5/6853 (2013.01); A61B 5/6858 (2013.01); A61B 2018/0022 (2013.01); A61B 2018/00267 (2013.01); A61B 2018/00375 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00958 (2013.01); A61B 2018/126 (2013.01); A61B 2562/0209 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A catheter, comprising:
a shaft for insertion into an organ of a patient;
an expandable frame extending along a longitudinal axis from a proximal portion to a distal portion and defining a first diameter at its greatest width, the expandable frame being fitted at a distal end of the shaft and comprising a generally planar distal end;
a plurality of flexible substrates disposed on the expandable frame, each flexible substrate extending from a proximal section to a distal section, each flexible substrate of the plurality of flexible substrates comprising a middle section having a width that is greater than a width of the proximal section or a width of the distal section;
a first set of electrodes disposed over the distal portion of the expandable frame and configured to be placed in contact with a tissue in the organ, the distal portion of the expandable frame defining a second diameter that is less than the first diameter and spaced a first distance away from the first diameter in the distal direction, each respective electrode of the first set of electrodes disposed on the distal section of a respective flexible substrate of the plurality of flexible substrates, wherein each respective electrode of the first set of electrodes tapers from a proximal end toward a distal end of each respective electrode of the first set of electrodes and defines an apex at the distal end of each respective electrode of the first set of electrodes;
a second set of electrodes disposed on the proximal portion of the expandable frame, the proximal portion of the expandable frame defining a third diameter spaced a second distance away from the first diameter in the proximal direction, the second distance being greater than the first distance and the second diameter being greater than the third diameter such that the expandable frame is configured to prevent the second set of electrodes from contacting the tissue in the organ, each respective electrode of the second set of electrodes disposed on the proximal section of a respective flexible substrate of the plurality of flexible substrates such that the middle section of each respective flexible substrate of the plurality of flexible substrates is positioned between a respective electrode of the first set of electrodes and a respective electrode of the second set of electrodes, wherein each electrode of the second set of electrodes tapers from a distal end toward a proximal end of each electrode of the second set of electrodes and defines an apex at the proximal end of each electrode of the second set of electrodes; and
a switching circuit to connect at least two or more electrodes of the second set of electrodes disposed on the proximal portion to form a common electrode.