Method and apparatus for improving the comfort of CPAP
US7128069B2 · kind B2 · utility
119Cited by
33References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2004 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Sep 16, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/63
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A low-cost CPAP apparatus in which, upon detection of the transition from inhalation to exhalation, the blower motor is de-energized to allow it to freewheel. When the pressure in the patient mask (or whatever interface is utilized) reaches a minimum pressure level during exhalation, the motor is re-energized and its speed is controlled so to maintain the pressure at a level suitable for exhalation. Upon detection of the transition from exhalation to inhalation, the motor speed is increased to provide higher pressures in the patient mask suitable for inhalation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.