US 12,433,501 B2
Sensor circuit device for measuring a bio-potential or a bio-impedance
Olivier Chételat, Cudrefin (CH)
Assigned to CSEM Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Développement, Neuchatel (CH)
Filed by CSEM Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Développement, Neuchâtel (CH)
Filed on Feb. 3, 2022, as Appl. No. 17/649,804.
Claims priority of application No. 21155816 (EP), filed on Feb. 8, 2021.
Prior Publication US 2022/0248975 A1, Aug. 11, 2022
Int. Cl. A61B 5/305 (2021.01); A61B 5/053 (2021.01); A61B 5/0531 (2021.01); A61B 5/308 (2021.01); G01R 27/26 (2006.01); G01R 29/12 (2006.01); H02J 50/00 (2016.01)
CPC A61B 5/053 (2013.01) [A61B 5/0531 (2013.01); A61B 5/305 (2021.01); A61B 5/308 (2021.01); G01R 27/26 (2013.01); G01R 29/12 (2013.01); H02J 50/001 (2020.01); A61B 2560/0214 (2013.01); A61B 2562/222 (2013.01)] 13 Claims
OG exemplary drawing
 
1. Sensor circuit device for measuring a bio-potential and/or a bio-impedance of a body, comprising a master circuit;
at least two first connectors and a second connector, each of said at least two first connectors and the second connector comprising a single-wire;
at least two active bi-electrodes, each of the active bi-electrodes comprising a potential electrode and a current electrode and being connected to, and remotely powered by, the master circuit via a respective one of the first connectors; and
a biological signal amplifier connectable to each of the active bi-electrodes via the respective one of the first connectors;
wherein the master circuit comprises a master voltage supplying device, a first terminal, a second terminal, and at least two impedance master circuits, each of the active bi-electrode being connected to the first terminal via the respective one of the first connectors and one of said at least two impedance master circuits;
wherein the sensor circuit device further comprises a single passive current electrode connected to the second terminal via the second connector; and
wherein the biological signal amplifier is configured to measure a bio-potential and/or a bio-impedance of the body between each of said at least two active bi-electrodes when each of the active bi-electrodes are connected to the biological signal amplifier via the respective one of the first connector, and when the active bi-electrodes and the single passive current electrode are in contact with a surface of the body.