Methods, systems, and devices for determining a respiration rate
US10390730B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2018 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Jun 25, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/742
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed are methods, systems, and devices for determining a respiration rate. An example method includes capturing by a wearable device over a non-zero time period a PPG signal and making a first determination that, during the non-zero time period, the wearable device has moved less than a threshold amount. Responsive to the first determination, the method includes (i) determining from the PPG signal each of (1) a respiratory-induced intensity variation (RIIV) signal, (2) a respiratory-induced amplitude variation (RIAV) signal, and (3) a respiratory-induced frequency variation (RIFV) signal; and (ii) making a second determination that, based on the RIIV signal, the RIAV signal, and the RIFV signal, a respiration rate is determinable. Responsive to the second determination, the method includes (i) determining the respiration rate and (ii) providing by the wearable device a notification, with the notification being based at least in part on the determined respiration rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.