System for noninvasive optical measurements of physiological properties in tissue
US9526431B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2011 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Dec 20, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/721
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Embodiments of the present invention comprise systems and methods for noninvasion measurements of physiological properties of tissues. The system comprises a light emitter, an optical detector, a mechanical sensor and a processor. The light emitter is capable of emitting light of at least two different wavelengths and comprises at least one light source. The processor is capable of evaluating physiological properties of the tissues from measurements of the optical and the mechanical sensor. More precisely, the processor is capable of evaluating physiological properties of venous blood by using data measured by the mechanical sensor and the optical detector. For example, the oxygenation of venous blood can be measured. Furthermore, the systems can optionally comprise a light emitter which emits three wavelengths and/or the light emitter and the optical detector are arranged in reflection geometry and are located at a distance of at most 10 mm from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.