Photon density wave based determination of physiological blood parameters
US8712492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2011 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Mar 21, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/024
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for measuring a physiological parameter of blood in a patient is presented. The system includes a transmission module configured to emit a plurality of photon density waves into tissue of the patient from a plurality of modulated light sources. The system also includes a receiver module configured to detect characteristics of the plurality of photon density waves. The system also includes a processing module configured to identify characteristics of a pulsatile perturbation of the tissue based on the characteristics of the plurality of photon density waves, and identify a value of the physiological parameter based on at least the characteristics of the pulsatile perturbation of the tissue and the characteristics of the plurality of photon density waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.