US11717206B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11717206-B2 |
| Application number | US-201716310993-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 5, 2017 |
| Priority date | Jul 6, 2016 |
| Publication date | Aug 8, 2023 |
| Grant date | Aug 8, 2023 |
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An object of the present invention is to provide a bioelectrode, which can stably measure biological information and is suitable for repeated use, and a method of manufacturing the bioelectrode. This object is solved by a bioelectrode comprising a silver coating layer provided on a conductive silicone rubber electrode, wherein the conductive silicone rubber electrode is composed of a silicone rubber containing conductive carbon particles, the silver coating layer is composed of silicone rubber and at least one of agglomerated silver powder and flake-like silver powder, and the silver coating layer has a thickness of 18 μm to 80 μm, and, preferably, in which the silver powder contains both the agglomerated silver powder and the flake-like silver powder.
Opening claim text (preview).
The invention claimed is: 1. A bioelectrode comprising a silver coating layer provided on a conductive silicone rubber electrode, wherein the conductive silicone rubber electrode is composed of a silicone rubber containing conductive carbon particles, the silver coating layer is composed of silicone rubber and a silver powder, wherein the silver powder comprises both an agglomerated silver powder and a flake-like silver powder, the silver coating layer has electrical conductivity and ionic conductivity, the surface of the silver coating layer is brought into contact with a living body, ions exist between particles of the silver powder to allow the silver coating layer to have the ionic conductivity, the ions are derived from chloride salts of akali metals, a content of the flake-like silver powder is 50 parts by weight or more and 180 parts by weight or less with respect to a total parts by weight of the agglomerated silver powder and the flake-like silver powder, and the total parts by weight of the combination of the flake-like silver powder and the agglomerated silver powder is 200. 2. The bioelectrode according to claim 1 , wherein the silver coating layer has a thickness of 18 μm to 80 μm. 3. The bioelectrode according to claim 1 , wherein a flexible printed wiring board is provided as a signal transmission member on a surface opposite to a surface provided with the silver coating layer on the conductive silicone rubber electrode.
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