Systems and methods for determining respiration information from a photoplethysmograph
US9402554B2 · kind B2 · utility
1Cited by
110References
20Claims
0Family size
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Key dates
| Filing date | Sep 23, 2011 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Nov 9, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/6826
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A signal representing physiological information may include information related to respiration. A patient monitoring system may utilize a wavelet transform to generate a scalogram from the signal. A threshold for the scalogram may be calculated, and scalogram values may be compared to the threshold. One of the scales meeting the threshold may be selected as representing respiration information such as respiration rate. The respiration information may be determined based on the selected scale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.