COMPOSITE BIOCOMPATIBLE MICROELECTRODE FOR MEDICAL USE Russian patent published in 2024 - IPC A61N1/04 A61B5/25 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to implantable medical devices for detection of extracellular electric potentials and/or excitation of action potentials by electric stimulation. Composite biocompatible microelectrode consists of a core in the form of an annealed carbon monofilament with diameter of 5–10 mcm or a bundle of carbon fibres of up to 100 pieces located in an electroconductive matrix and has an external insulating coating. Matrix is a composite material of polydimethylsiloxane with content of conducting filler particles in the form of carbon micro- and nanoparticles from 30 to 70% by weight. Outer coating consists of polydimethylsiloxane, made by mixing dimethylsiloxane and methylhydrosiloxane with a platinum complex as a catalyst in a weight ratio of 10/1.

EFFECT: mechanical properties of the entire microelectrode are approximated to those of peripheral nerve tissue, namely, reduced modulus of elasticity compared to untreated carbon fibre.

1 cl, 5 dwg, 1 ex