Wearable pulse oximetry device
US9314197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2012 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Dec 30, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/742
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pulse oximetry device that is mounted on a wrist strap and fixates an area above a distal end of the ulna with a dome shaped structure. This area is used as measuring area. The measurement is carried out by a detector positioned above the fixated area, that detects light emitted by light sources having different wave lengths that are located at a periphery of the fixated area. Hence, the reflections are measured at neither a reflection mode nor a transmission mode, but are at an angle between 20° and 160° from the emitted light. This mode, termed trans-illumination, allows achieving an excellent signal to noise ratio that for the first time enables continuous and reliable measurement of oximetry data on the wrist.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.