Method and system for classification of photo-plethysmographically detected respiratory effort
US10532170B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2015 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Oct 13, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/40
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Embodiments disclosed herein may include systems and methods for determining a patient's respiratory effort and blood oxygen saturation based on data acquired from a pulse oximetry sensor and analyzing the parameters in conjunction with each other. For example, the respiratory effort may be determined based on a photo-plethysmographic waveform generated from light attenuation detected by the sensor, and the blood oxygen saturation may be a pulse-based estimate of arterial blood oxygen saturation determined from the detected attenuation. Analysis of the parameters may enable detection and classification of apnea (e.g., obstructive or central) or another underlying cause for respiratory instability. Furthermore, the measured respiratory effort may be compared to respiratory effort supplied by a ventilator to ensure proper sensor placement before enabling automatic adjustment of ventilator settings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.