US 12,263,014 B2
High-density electrode catheters with magnetic position tracking
Troy T. Tegg, Elk River, MN (US); Gregory K. Olson, Elk River, MN (US); Timothy S. Marass, Minneapolis, MN (US); Derek C. Sutermeister, Ham Lake, MN (US); Bruce Ebner, Shorewood, MN (US); Hong Cao, Savage, MN (US); and Vladislav Dmidrievich Popov, Plymouth, MN (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 Aug. 18, 2021, as Appl. No. 17/405,442.
Claims priority of provisional application 63/067,284, filed on Aug. 18, 2020.
Prior Publication US 2022/0054198 A1, Feb. 24, 2022
Int. Cl. A61B 18/14 (2006.01); A61B 5/00 (2006.01); A61B 5/287 (2021.01); A61B 18/00 (2006.01); A61B 34/20 (2016.01); A61B 34/00 (2016.01)
CPC A61B 5/6859 (2013.01) [A61B 18/1492 (2013.01); A61B 34/20 (2016.02); A61B 5/287 (2021.01); A61B 5/6858 (2013.01); A61B 2018/0016 (2013.01); A61B 2018/00267 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00357 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00839 (2013.01); A61B 2018/1465 (2013.01); A61B 2018/1467 (2013.01); A61B 2034/2051 (2016.02); A61B 34/25 (2016.02); A61B 2560/0462 (2013.01); A61B 2562/0223 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A high-density electrode catheter comprising:
a catheter shaft including a proximal end and a distal end, the catheter shaft defining a catheter shaft longitudinal axis;
a shaft magnetic position sensor disposed along a distal portion of the catheter shaft;
a flexible tip portion located adjacent to the distal end of the catheter shaft, wherein the flexible tip portion includes a flexible framework comprising:
first and second longitudinally extending outboard arms;
first and second longitudinally extending inboard arms; and
a central arm that extends between the first and second longitudinally extending inboard arms;
a proximal coupler from which the first and second outboard arms, the first and second inboard arms, and the central arm extend, wherein the first and second outboard arms and the first and second inboard arms exit the proximal coupler on a first plane that runs along a longitudinal axis of each of the first and second outboard and inboard arms and the central arm exits the proximal coupler offset from the first plane and extends distally away from the proximal coupler and toward the first plane;
a plurality of electrodes disposed on the flexible framework;
a first magnetic position sensor disposed on the first outboard arm;
a second magnetic position sensor disposed on the second outboard arm; and
a distal coupler that couples distal portions of the first and second outboard arms, first and second inboard arms, and the central arm on the first plane; wherein the central arm includes a single longitudinally extending arm; and the central arm includes a lengthening feature; wherein the lengthening feature includes a bend formed in the single longitudinally extending arm; and the lengthening feature is configured to elongate when the flexible tip portion is in a collapsed state.