Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2006-10-31
2006-10-31
Lewis, Aaron J. (Department: 3743)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S204210, C128S204230
Reexamination Certificate
active
07128069
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.
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Alder Matthew
Farrugia Steven Paul
Price Andrew Martin
Richard Ron
Gottlieb Rackman & Reisman
Lewis Aaron J.
Resmed Limited
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