Respiratory apparatus with improved flow-flattening detection
US9782133B2 · kind B2 · utility
2Cited by
67References
8Claims
0Family size
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Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Jun 19, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2016/0039
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a respiratory apparatus for treatment of sleep apnea and other disorders associated with an obstruction of a patient's airway and which uses an airflow signal, an obstruction index is generated which detects the flattening of the inspiratory portion of the airflow. The obstruction index is used to differentiate normal and obstructed breathing. The obstruction index is based upon different weighting factors applied to sections of the airflow signal thereby improving sensitivity to various types of respiration obstructions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.