US 12,390,635 B2
Ring electrode for a medical device
Bernd Spaniol, Hanau (DE); Tim Esposto, Hanau (DE); Andre Weigand, Hanau (DE); and Markus Jung, Hanau (DE)
Assigned to Heraeus Medevio GmbH & Co. KG, Hanau (DE)
Filed by Heraeus Deutschland Gmbh & Co. KG, Hanau (DE)
Filed on Aug. 4, 2021, as Appl. No. 17/393,950.
Claims priority of application No. 20189385 (EP), filed on Aug. 4, 2020.
Prior Publication US 2022/0040474 A1, Feb. 10, 2022
Int. Cl. A61N 1/05 (2006.01); A61N 1/36 (2006.01); B21C 1/00 (2006.01); B21C 37/06 (2006.01); B21C 37/15 (2006.01)
CPC A61N 1/05 (2013.01) [A61N 1/36125 (2013.01); B21C 1/003 (2013.01); B21C 37/065 (2013.01); B21C 37/154 (2013.01); A61B 2562/125 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A process for preparing a ring electrode comprising:
a) providing a monolithic metal precursor,
wherein the monolithic metal precursor comprises an outer tube forming a first cavity of the precursor, and
wherein the outer tube has a wall comprising in one section an inner tube forming a second cavity of the precursor;
b) preparing a composite precursor by inserting a first sacrificial core element into the first cavity of the precursor provided in a) and a second sacrificial core element into the second cavity of the precursor provided in a);
c) forming the composite precursor obtained in b) to obtain a formed composite having a smaller outer diameter than the composite precursor obtained in b);
d) separating a composite disk from the formed composite obtained in c);
e) removing the first and the second sacrificial core element from the composite disk obtained in d).