Optical sensor configuration for ratiometric correction of blood glucose measurement
US8467843B2 · kind B2 · utility
14Cited by
246References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2009 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Aug 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/7786
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Embodiments of the invention are directed to an optical sensor for detecting blood glucose. The sensor comprises a chemical indicator system disposed within a gap between the distal end of an optical fiber and an atraumatic tip portion, wherein the optical fiber and atraumatic tip portion are coupled by a coupling member, such as a rod or hypotube or cage that traverses the gap. The sensor further comprises a means for generating and detecting an optical reference signal unrelated to the blood glucose, such that ratiometric correction of blood glucose measurements for artifacts in the optical system is enabled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.