Coated noble metal electrodes
AssigneeHeraeus Medevio GmbH & Co. KG
InventorsLeonard Stoica, Ilias Nikolaidis
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Abstract
The invention relates to a medical electrode comprising a substrate, a first layer, and a second layer, wherein the first layer is arranged directly on the substrate, and the second layer is arranged directly on the first layer, wherein the first layer comprises a noble metal, and the second layer comprises a conductive polymer, wherein the first layer comprises a rough and/or porous surface.
Claims15
A medical electrode comprising a substrate, a first layer, and a second layer, wherein the first layer is arranged directly on the substrate, and the second layer is arranged directly on the first layer, wherein the first layer comprises a noble metal applied in multiple layers as particle-free noble metal ink on the substrate and thermally decompositioning the particle-free noble metal ink, and the second layer comprises a conductive polymer, characterized in that the first layer comprises one or more of the following features (a) to (e):
- (a) an open-pore structure,
- (b) a porosity of at least 30% by volume,
- (c) a density of at most 90% of the theoretical density of the noble metal,
- (d) a specific surface area of at least 1×106 m−1,
- (e) an average surface roughness Ra of at least 500 nm.
A method for producing a medical electrode, comprising:
- provision of a substrate,
- multiple applications of a particle-free noble metal ink to the substrate,
- thermal decomposition of the noble metal ink in order to obtain a first layer of noble metal,
- application of a conductive polymer to the first layer in order to obtain a second layer.
Dependencies are inferred from the claim text.