Electrical method and apparatus for non-contact determination of physical and/or chemical properties of a sample, particularly of blood
US5583432A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1994 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Apr 11, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/05
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for investigating various parameters of biofluids, such as blood, particularly protein and cellular concentrations and cellular volume utilises the application of at least two a.c. frequencies, preferably simultaneously, in the range 0.1 to 60 MHz to a sample of the fluid and receiving and resolving the frequencies after passage through the fluid. The received frequencies are processed to derive corresponding d.c. voltage amplitudes which are mathematically processed to provide a numeric output correlating with a parameter under investigation, A new parameter named Instant Sedimentation Rate (ISR) is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.