Non-invasive optical measurement of blood hematocrit
US6006119A · kind A · utility
243Cited by
16References
16Claims
0Family size
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Key dates
| Filing date | Feb 4, 1998 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Feb 4, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides an optical method and apparatus for non-invasively determining blood hematocrit. The method includes the step of first irradiating blood with optical radiation. Radiation reflected or transmitted from the blood is then collected to determine an optical spectrum. Hematocrit is then determined by comparing this spectrum to a mathematical model relating optical properties to blood Hematocrit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.