US 12,324,620 B2
Ablation catheter with electrodes
Alan de la Rama, Cerritos, CA (US); Peter Chen, Irvine, CA (US); and Cary K. Hata, Irvine, CA (US)
Assigned to St. Jude Medical, Cardiology Division, Inc., St. Paul, MN (US)
Filed by St. Jude Medical, Cardiology Division, Inc., St. Paul, MN (US)
Filed on Jun. 8, 2023, as Appl. No. 18/331,533.
Application 18/331,533 is a continuation of application No. 16/387,487, filed on Apr. 17, 2019, granted, now 11,707,319.
Application 16/387,487 is a continuation of application No. 15/542,030, granted, now 11,246,655, previously published as PCT/US2016/012497, filed on Jan. 7, 2016.
Claims priority of provisional application 62/182,226, filed on Jun. 19, 2015.
Claims priority of provisional application 62/100,843, filed on Jan. 7, 2015.
Prior Publication US 2023/0310075 A1, Oct. 5, 2023
Int. Cl. A61B 18/14 (2006.01); A61B 5/287 (2021.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1492 (2013.01) [A61B 5/287 (2021.01); A61B 2017/00053 (2013.01); A61B 2018/00083 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00839 (2013.01); A61B 2562/02 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A catheter comprising:
an elongate shaft extending along a shaft longitudinal axis;
a flexible tip assembly coupled to a distal end of the elongate shaft, the flexible tip assembly comprising:
at least three mapping electrodes equally spaced about a circumference of the flexible tip, each of the at least three mapping electrodes comprising an elongated shape having a length that is longer than a width, the length extending parallel to the shaft longitudinal axis;
an ablation electrode, the ablation electrode including a cylindrical body and a distal end, the distal end of the ablation electrode including a flat surface, wherein each of the at least three mapping electrodes are disposed within a respective elongated groove such that the at least three mapping electrodes are flush with an outer surface of the ablation electrode; and
a plurality of irrigation ports, at least one irrigation port of the plurality of irrigation ports extending through the cylindrical body of the ablation electrode and at least one irrigation port of the plurality of irrigation ports extending through the flat surface of the distal end of the ablation electrode, the at least three mapping electrodes located between the at least one irrigation port extending through the cylindrical body of the ablation electrode and the at least one irrigation port extending through the flat surface of the distal end of the ablation electrode; and
an irrigation lumen extending through the elongate shaft and into an interior of the flexible tip assembly, wherein the irrigation lumen is configured to direct irrigation fluid to the plurality of irrigation ports.