Multi-stream sensor for noninvasive measurement of blood constituents
US8203704B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2009 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Jan 4, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/146
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present disclosure relates to a sensor having a set of photodetectors that are arranged at various locations to enable the measurement of blood glucose. The photodetectors are arranged across multiple locations. For example, the detector may comprise multiple photodetector arrays that are arranged to have a sufficient difference in mean path length to allow for noise cancellation and noise reduction. Walls may be used in the detector to separate individual photodetectors and prevent mixing of detected optical radiation between the different locations on the measurement site. A window may also be employed to facilitate the passing of optical radiation at various wavelengths for measuring glucose in the tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.