Device for reference measurement and photometric correction in non-invasive glucose measurement using near infrared spectroscopy
US6917422B2 · kind B2 · utility
54Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2003 |
| Grant date | Jul 12, 2005 |
| Priority date | — |
| Expiry date | Apr 30, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0233
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a photometric reference member comprising PTFE and glass. The member exhibits an absorbance change of less than 0.0001 absorbance units per degree C. over a range of temperatures, preferably from about 20° C. to about 40° C., and over wavelengths from about 600 nm to about 1650 nm, preferably about 600 nm to about 1050 nm. The invention also pertains to methods of using the photometric reference member to correct for temperature variations or drift in absorbance measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.