Apparatus for measuring impedance of body tissue
US4805621A · kind A · utility
177Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1987 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Jun 15, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36521
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for measuring the impedance of body tissue has a signal source connected to the tissue to be measured which supplies an electrical signal to the tissue, a unit for acquiring an impedance signal from the body tissue dependent on the electrical signal, and an evaluation stage for the impedance signal. The evaluation stage filters out low frequency signal components corresponding to the conductance of the tissue, and has a signal output to which the signal components which were filtered out are supplied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.