Method and device for measuring electrical impedance of biological tissues
US10660540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2017 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Jun 27, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/6804
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for measuring an electrical impedance of biologic tissue may include electrodes configured to contact the biologic tissue and generate a differential voltage thereon. The device may include a first circuit coupled to the electrodes and configured to force an oscillating input signal therethrough, and a differential amplitude modulation (AM) demodulator coupled to the plurality of electrodes. The differential AM demodulator may be configured to demodulate the differential voltage, and generate a base-band signal representative of the demodulated differential voltage. The device may further include an output circuit downstream from the differential AM demodulator and may be configured to generate an output signal representative of the electrical impedance as a function of the base-band signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.