Method and device for measuring concentration of glucose or other substances in blood
US6804002B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2002 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Dec 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/21
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and device for optical measurements are presented for determining the concentration of a substance in patient's blood. Optical measurement sessions are applied to a measurement location in a blood containing medium during certain time period. The optical measurements include illumination of the measurement location with incident light of at least one selected wavelength, detection, at each measurement session, of at least two light responses of the medium characterized by at least two different polarization states of detected light, respectively, and generation of data representative thereof. Measured data so obtained is in the form of at least two time variations of the light responses of the medium characterized by different polarization states of detected light, respectively, a relation between the time variations being indicative of the concentration of the substance in blood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.