Non-invasive determination of blood components
US7711403B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2002 |
| Grant date | May 4, 2010 |
| Priority date | — |
| Expiry date | Aug 4, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0233
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of estimating an amount of a substance in a bodily fluid from the color of a tissue surface of a subject includes capturing an image including at least a portion-of-interest of the subject and at least a reference portion of a color reference, the image being a digital image of pixels of at least one color, the image including a component value for each pixel for each of the at least one color, obtaining a first value associated with at least one component value corresponding to the portion-of-interest of the subject, obtaining a second value associated with at least one component value corresponding to the reference portion, and calculating an estimated amount of the substance using the first and second values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.