Photoplethysmography device and method
US8868149B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2012 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Oct 16, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7285
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method for measuring one or more light-absorption related blood analyte concentration parameters of a mammalian subject, is disclosed. In some embodiments, the system comprises: a) a photoplethysmography (PPG) device configured to effect a PPG measurement by illuminating skin of the subject with at least two distinct wavelengths of light and determining relative absorbance at each of the wavelengths; b) a dynamic light scattering measurement (DLS) device configured to effect a DLS measurement of the subject to rheologically measure a pulse parameter of the subject; and c) electronic circuitry configured to: i) temporally correlating the results of the PPG and DLS measurements; and ii) accordance with the temporal correlation between the PPG and DLS measurements, assessing value(s) of the one or more light-absorption related blood analyte concentration parameter(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.