System for noninvasive determination of analytes in tissue
US8174394B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2009 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Sep 28, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/129
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for noninvasive determination of analyte properties of human tissue by quantitative infrared spectroscopy to clinically relevant levels of precision and accuracy. The system includes subsystems optimized to contend with the complexities of the tissue spectrum, high signal-to-noise ratio and photometric accuracy requirements, tissue sampling errors, calibration maintenance problems, and calibration transfer problems. The subsystems can include an illumination/modulation subsystem, a tissue sampling subsystem, a data acquisition subsystem, a computing subsystem, and a calibration subsystem. The invention can provide analyte property determination and identity determination or verification from the same spectroscopic information, making unauthorized use or misleading results less likely than in systems that use separate analyte and identity determinations. The invention can be used to control and monitor individuals accessing controlled environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.