Apparatus for the pH determination of blood and method therefor
US7544503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2004 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Apr 24, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/65
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a spectroscopic apparatus for non-invasive in vivo analysis of blood and to a corresponding analysis method, in particular for direct determination of the pH value of the blood. From a Raman signal detected from an excited target region containing blood at least one predetermined pH sensitive signal portion is determined, from which the pH value of the blood in the target region by use of a relationship between pH value and one or more band parameters of pH sensitive vibrations of at least one molecule or part of a molecule present in blood, in particular heme vibrations of hemoglobin, is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.