Method and apparatus for multi-spectral analysis of organic blood analytes in noninvasive infrared spectroscopy
US6040578A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1996 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Feb 2, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7253
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus are described for determining the concentration of an organic blood analyte using multi-spectral analysis in the near infrared and mid-infrared ranges. Incident radiation containing a plurality of distinct, nonoverlapping regions of wavelengths in the range of approximately 1100 to 5000 nm is used to scan a sample. Diffusively reflected radiation emerging from the sample is detected, and a value indicative of the concentration of the analyte is obtained using an application of chemometrics techniques. Information obtained from each nonoverlapping region of wavelengths can be cross-correlated in order to remove background interferences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.