Combined light source photoacoustic system
US8885155B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2012 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Aug 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/1702
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A physiological monitoring system may use photoacoustic sensing to determine one or more physiological parameters of a subject. The photoacoustic system may use two light sources (e.g., a high power pulsed laser diode and a continuous wave laser diode) to generate acoustic pressure signals in a subject. One or more light sources (e.g., the high powered pulsed laser diode) may provide a high signal-to-noise ratio. The high signal-to-noise ratio signals may provide high sensitivity for physiological measurements (e.g., cardiac output and temperature measurements). The photoacoustic system may use high powered light sources in combination with other light sources to improve physiological measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.