US 11,666,765 B2
Biostimulator having low-polarization electrode(s)
Gene A. Bornzin, Santa Monica, CA (US); Wesley Alleman, Santa Clarita, CA (US); Tyler J. Strang, Valencia, CA (US); Keith Victorine, Valencia, CA (US); and Nicole Cooper, Burbank, CA (US)
Assigned to PACESETTER, INC., Sylmar, CA (US)
Filed by Pacesetter, Inc., Sylmar, CA (US)
Filed on Mar. 11, 2021, as Appl. No. 17/199,266.
Claims priority of provisional application 63/003,596, filed on Apr. 1, 2020.
Prior Publication US 2021/0308466 A1, Oct. 7, 2021
Int. Cl. A61N 1/05 (2006.01); A61N 1/37 (2006.01); A61N 1/378 (2006.01); A61N 1/375 (2006.01)
CPC A61N 1/3712 (2013.01) [A61N 1/0573 (2013.01); A61N 1/378 (2013.01); A61N 1/3714 (2013.01); A61N 1/3716 (2013.01); A61N 1/3756 (2013.01); A61N 1/37512 (2017.08); A61N 2001/058 (2013.01); A61N 2001/0578 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A biostimulator, comprising:
a housing including a housing wall containing an electronics compartment;
a battery assembly including a cell can coupled to the housing;
an outer fixation element coupled to the housing, wherein the outer fixation element includes an outer helix;
an inner fixation element coupled to the housing, wherein the inner fixation element includes an inner helix radially inward of the outer helix, and wherein the inner fixation element includes an outer surface having a first geometrical surface area;
an attachment feature coupled to the cell can, wherein the attachment feature includes a stem extending between a base and a button, and wherein the attachment feature includes an exterior surface having a second geometrical surface area;
a first low-polarization coating on the outer surface of the inner fixation element, wherein the first low-polarization coating has a first effective surface area; and
a second low-polarization coating on the exterior surface of the attachment feature, wherein the second low-polarization coating has a second effective surface area, and wherein a first ratio of the first geometrical surface area to the second geometrical surface area is smaller than a second ratio of the first effective surface area to the second effective surface area.