US 11,717,206 B2
Bioelectrode and method of manufacturing the bioelectrode
Ryo Futashima, Fujisawa (JP); Yasushi Sugiyama, Fujisawa (JP); and Toru Uda, Fujisawa (JP)
Assigned to NOK CORPORATION
Appl. No. 16/310,993
Filed by NOK CORPORATION, Tokyo (JP)
PCT Filed Jul. 5, 2017, PCT No. PCT/JP2017/024670
§ 371(c)(1), (2) Date Dec. 18, 2018,
PCT Pub. No. WO2018/008688, PCT Pub. Date Jan. 11, 2018.
Claims priority of application No. 2016-134492 (JP), filed on Jul. 6, 2016.
Prior Publication US 2020/0305746 A1, Oct. 1, 2020
Int. Cl. A61B 5/00 (2006.01); A61B 5/25 (2021.01)
CPC A61B 5/25 (2021.01) [A61B 2562/0215 (2017.08); A61B 2562/125 (2013.01)] 3 Claims
OG exemplary drawing
 
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.