Patent ID: 7653439

Claim:
A method for producing an electrode structure ( 10 ) for implants, comprising a noble metal or a noble metal alloy having a thickness of ≦100 μm, wherein the electrode structure ( 10 ) has an electrode core ( 12 ) comprising an element selected from the group consisting of gold, silver, copper, and alloys of at least two of these elements, and wherein the electrode core ( 12 ) has a thickness in a range of about 5 μm to 99.8 μm and is encased completely by a first coating ( 13 ; 13 a , 13 b ) comprising at least one element selected from the group consisting of platinum, iridium, and ruthenium, the method comprising: a) coating an electrically insulating surface ( 14 a ) of a substrate ( 14 ) with a metal layer ( 15 ), then coating the metal layer ( 15 ) with a photoresist ( 16 ), and structuring the photoresist ( 16 ), b) galvanically generating a first part ( 13 a ) of the first coating on regions of the metal layer ( 15 ) exposed by the structured photoresist, c) galvanically forming the electrode core ( 12 ) on the first part ( 13 a ) of the first coating, d) then removing the structured photoresist ( 16 ) from the metal layer ( 15 ), e) removing the metal layer ( 15 ) from the electrically insulating surface ( 14 a ) of the substrate ( 14 ) in regions not covered by the first part ( 13 a ) of the first coating, f) galvanically coating part of the electrode core ( 12 ) still free up to now from the first coating with a second part ( 13 b ) of the first coating, g) detaching the electrode structure ( 10 ) including the metal layer ( 15 ) from the electrically insulating surface ( 14 a ) of the substrate ( 14 ), and h) then removing the metal layer ( 15 ) from the electrode structure ( 10 ).