Non-invasive blood glucose meter
US6043492A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1997 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Oct 27, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/314
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A non-invasive blood glucose meter includes a near-infrared energy analyzer which includes a light filter assembly of two Fabry-Perot interferometers and a photosensor. The near-infrared energy analyzer detects near-infrared energy absorbed by a human or animal body and generates spectra of such absorption so that the blood glucose content in the body may be analyzed. In order to provide stable energy absorption information of the blood, special designs are provided to stabilize the light source, to calibrate the spectrum and to obviate the noise from the heartbeats of the body. A single crystal silicon elastic power source is used to provide the driving power of the Fabry-Perot interferometer to avoid mechanical hysteresis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.