Noninvasive determination of alcohol in tissue
US7403804B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2004 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Jan 1, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/14546
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and method for non-invasive determination of attributes of human tissue by quantitative infrared spectroscopy. 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 include an illumination subsystem, a tissue sampling subsystem, a spectrometer subsystem, a data acquisition subsystem, and a processing subsystem. The invention is applicable, as examples, to determining the concentration or change of concentration of alcohol in human tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.