Optical measurements apparatus and blood sugar level measuring apparatus using the same
US7254427B2 · kind B2 · utility
162Cited by
22References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2004 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Mar 22, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/4742
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Blood sugar levels are measured non-invasively based on temperature measurement. Values of blood sugar levels non-invasively measured by a temperature measuring system are corrected using blood oxygen saturation and blood flow volume. Optical sensors are provided for detecting scattered light, reflected light, and light that enters into the skin which travels out of the body surface. The measurement data is stabilized by taking into consideration the influence of the thickness of skin on blood oxygen saturation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.