Biological measurement method
US11872028B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2020 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Sep 23, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/066
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
To perform respiratory monitoring and cardiac-output measurement on general patients, an aspect of a biological measurement apparatus includes: at least two electrodes that are attached to a living body; a power supply that causes an AC current to flow between the two electrodes; at least two coils that are placed so as to sandwich a line linking the two electrodes, and detect a magnetic field related to a change in the AC current accompanying a change in impedance of the living body; and a detection circuit that performs addition or subtraction of signals related to the magnetic field detected with the two coils, and outputs the signals as a change in the impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.