US 11,998,734 B2
Ring electrode with intermediate diffusion layer
Markus Jung, Hanau (DE); and Bernd Spaniol, Hanau (DE)
Assigned to Heraeus Deutschland GmbH & Co. KG, Hanau (DE)
Filed by Heraeus Deutschland Gmbh & Co. KG, Hanau (DE)
Filed on Jul. 13, 2021, as Appl. No. 17/374,347.
Claims priority of application No. 10 2020 118 372.0 (DE), filed on Jul. 13, 2020.
Prior Publication US 2022/0008718 A1, Jan. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 1/05 (2006.01); B21C 37/06 (2006.01); H01R 13/02 (2006.01)
CPC A61N 1/056 (2013.01) [B21C 37/06 (2013.01); H01R 13/025 (2013.01); H01R 2201/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing a ring electrode, comprising:
(a) providing an outer element comprising an outer tube,
(b) providing a first inner element, which comprises a first inner tube having a first core made of a sacrificial material,
the first inner tube comprising a diffusion agent on the outer side of the first inner tube, or the outer tube comprising a diffusion agent on the inner side of the outer tube,
(c) providing a second inner element, which comprises a second core made of a sacrificial material,
(d) forming a composite tube by arranging the first inner element and the second inner element inside the outer element, the first inner element and the second inner element being arranged eccentrically to each other,
(e) drawing the composite tube in a longitudinal direction of the composite tube,
(f) forming an integral connection between the outer element and the first inner element by means of the diffusion agent,
(g) separating a composite tube disk from the composite tube,
(h) removing the sacrificial material of the first core, and
(i) removing the sacrificial material of the second core to obtain a contacting opening in the ring electrode.