Non-invasive optical measurement of blood hematocrit
US6304767A · kind A · utility
213Cited by
16References
21Claims
0Family size
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Key dates
| Filing date | Dec 1, 1999 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Dec 1, 2019 |
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 mathmatical model relating optical properties to blood Hematocrit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.