Device and method for determining the blood oxygen saturation of a subject
US9125606B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2013 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Dec 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30104
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for determining blood oxygen saturation of a subject comprises an interface for receiving a data stream derived from detected electromagnetic radiation emitted or reflected from one or more skin portions of the subject, said data stream comprising a data signal per skin pixel for a plurality of skin pixels of said one or more skin portions. An analyzer determines the change in blood oxygen saturation of said plurality of skin pixels based on the data signals of said plurality of skin pixels. A selector selects a group of skin pixels comprising either the skin pixels showing the fastest change in blood oxygen saturation or said plurality of skin pixels except for skin pixels showing the slowest change in blood oxygen saturation. A processor determines the blood oxygen saturation of the subject based on the data signals of the selected group of skin pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.