Respiratory apparatus with improved flow-flattening detection
US7013893B2 · kind B2 · utility
16Cited by
25References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 2004 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Sep 27, 2024 |
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.