System, method and computer program for capacitively recording electrical bio-signals

US10588571B2 · kind B2 · utility

Assignee

• Capical Gmbh · DE

Inventors

• Martin Oehler · Leingarten, DE
• Ilya Elenskiy · Braunschweig, DE

Key dates

• Filing date: Jul 14, 2016
• Grant date: Mar 17, 2020
• Expiry date: Aug 22, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R35/005
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

System for capacitively recording electrical bio-signals from a bio-signal source, wherein the system has at least one capacitive measuring electrode and at least one electronic evaluation unit which is coupled to the measuring electrode and is intended to evaluate the electrical signals from the measuring electrode, and wherein the system also has means for monitoring the quality of the capacitive coupling between the measuring electrode and the bio-signal source, characterized in that the means for monitoring the quality of the capacitive coupling have, in addition to the measuring electrode(s), at least two injection electrodes which are electrically separated from one another and are intended to feed injection signals into the at least one measuring electrode via the bio-signal source, wherein the system has signal generators for generating a first injection signal and a second injection signal which differs from the first injection signal, which signals are fed into the measuring electrode by means of the injection electrodes via the bio-signal source, and wherein the system has a determination unit which is set up to determine the quality of the capacitive coupling between th…