# US 11,026,615 B2 · Dry electrode for detecting biosignal and method for manufacturing same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,026,615 B2 - Document ID: US11026615B2 - Status: Granted - Kind: B2 - Application number: 15/960,027 - Filed: 2018-04-23 - Published: 2018-08-23 - Granted: 2021-06-08 - Earliest claimed: 2015-10-22 - Assignees: Y-Brain Inc. - Applicants: Y-Brain Inc - Inventors: Ki-Won Lee; Cheon-Ju Ko; Jong-Min Jang; Byung-Gik Kim - Web page: https://patentgrep.com/patent/US11026615B2 ## CPC - A61B 5/291: for electroencephalography [EEG] - A61L 31/024: {Carbon; Graphite} - A61L 31/041: {Mixtures of macromolecular compounds} - A61L 31/06: obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds {(A61L31/041 takes precedence)} - A61L 31/088: {Other specific inorganic materials not covered by A61L31/084 or A61L31/086} - A61L 31/16: Biologically active materials, e.g. therapeutic substances {(A61L31/047 takes precedence)} - H01B 1/12: organic substances {(organic macromolecular compounds or compositions C08)} - H01B 5/14: comprising conductive layers or films on insulating-supports - H01B 13/0036: {Details} - A61B 2562/0215: Silver or silver chloride containing - A61B 2562/125: characterised by the manufacture of electrodes - A61L 2300/104: Silver, e.g. silver sulfadiazine - A61L 2420/02: Methods for coating medical devices - A61L 2420/06: Coatings containing a mixture of two or more compounds - A61N 1/0456: {Specially adapted for transcutaneous electrical nerve stimulation [TENS]} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) ## Abstract Provided is a dry electrode for detecting a bio-signal, comprising a body part; a protrusion part formed on one surface of the body part; and a coating part formed on an end surface of the protrusion part, wherein the body part and the protrusion part comprise a conductive silicone, and the coating part comprises Ag, AgCl, and, optionally, 3-aminopropyltriethoxysilane. ## Claims ### Claim 1 A dry electrode for detecting a bio-signal, comprising: a body part; a protrusion part on one surface of the body part; and a coating part on an end surface of the protrusion part, wherein the coating part comprises Ag and AgCl, wherein the body part and the protrusion part comprise a conductive silicone, and the conductive silicone comprises a first silicone-based compound and carbon black, and wherein the coating part further comprises 3-aminopropyltriethoxysilane. ### Claim 2 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the end surface of the protrusion part is formed into a convex curved surface in the protruding direction of the protrusion part. ### Claim 3 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the first silicone-based compound comprises one selected from the group consisting of a vinyl group- or a hydroxyl group-terminated silicone compound, a vinyl group- or a hydroxyl group-terminated siloxane, and combinations thereof. ### Claim 4 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the first silicone-based compound comprises one selected from the group consisting of a hydroxyl group-containing silicone compound, a hydroxyl group-containing siloxane compound, and combinations thereof. ### Claim 5 (depends on 3) The dry electrode for detecting a bio-signal of claim 3, wherein the conductive silicone comprises 40 parts to 80 parts by weight of carbon black relative to 100 parts by weight of the first silicone-based compound. ### Claim 6 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the protrusion part has a height in the range of 3.0 mm to 9.0 mm. ### Claim 7 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the coating part has a thickness of 10 μm to 1000 μm. ### Claim 8 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the coating part further comprises a binder resin and a second silicone-based compound. ### Claim 9 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the coating part further comprises a binder resin and a second silicone-based compound, and the 3-aminopropyltriethoxysilane is connected to the second silicone-based compound by a condensation reaction to form a network structure. ### Claim 10 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the 3-aminopropyltriethoxysilane in the coating part is chemically bonded with the first silicone-based compound in the protrusion part by a condensation reaction. ### Claim 11 (depends on 8) The dry electrode for detecting a bio-signal of claim 8, wherein the binder resin comprises one selected from the group consisting of an epoxy resin, a polyester resin, a polyimide resin, a silicone resin, a urethane resin, a vinyl resin, and combinations thereof. ### Claim 12 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the coating part further comprises a binder resin and a second silicone-based compound, and the second silicone-based compound comprises one selected from the group consisting of a silicone compound, a siloxane compound, and combinations thereof. ### Claim 13 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the coating part further comprises a binder resin and a second silicone-based compound, and the second silicone-based compound comprises one selected from the group consisting of a hydroxyl group-containing silicone compound, a hydroxyl group-containing siloxane compound, and combinations thereof. ### Claim 14 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein, in the coating part, the weight ratio of Ag to AgCl is 50:50 to 95:5. ### Claim 15 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the coating part comprises 0.1% to 10% by weight of 3-aminopropyltriethoxysilane. ### Claim 16 (depends on 1) The dry electrode for detecting a bio-signal of claim 1, wherein the protrusion part is formed with a plurality of columns or spikes, and formed along a lattice, honeycomb, or spiral arrangement, or the protrusion part is formed with an integrated lattice, honeycomb, or spiral shape as a whole. ### Claim 17 A method of manufacturing a dry electrode for detecting a bio-signal, comprising: forming a body part having a protrusion part on one surface thereof, wherein the body part and the protrusion part comprises a conductive silicone, and wherein the conductive silicone comprises a first silicone-based compound and carbon black; and coating an end surface of the protrusion part to form a coating part comprising Ag and AgCl, wherein the coating part further comprises 3-aminopropyltriethoxysilane. ### Claim 18 (depends on 17) The method of manufacturing a dry electrode for detecting a bio-signal of claim 17, wherein coating the end surface of the protrusion part to form the coating part comprises: mixing a binder resin, an Ag powder, an AgCl powder, and a solvent to prepare a coating composition, wherein the end surface of the protrusion part is dipped into the coating composition and is thermally cured to form the coating part, or coating the end surface of the protrusion part with the coating part by electroplating, spray coating or vapor deposition coating. ### Claim 19 (depends on 18) The method of manufacturing a dry electrode for detecting a bio-signal of claim 18, wherein the coating composition has a viscosity in the range of from 20,000 cps to 25,000 cps at 25° C.