Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2006-06-20
2006-06-20
Dawson, Glenn K. (Department: 3731)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S204180, C128S207160
Reexamination Certificate
active
07063086
ABSTRACT:
A valve for use in a CPAP system or any stem at a pressure above ambient which vents the pressurised gases from the blower during expiration. Due to the pressure-flow characteristics of the blower this results in the patient having a much lower airway pressure during expiration making breathing easier. The valve includes a movable member which blocks flow from the blower to the patient during exhalation and vents externally. During inhalation gases flow normally from the blower to the patient. Also disclosed is a further application as an antiasphyxia.
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McAuley Alastair Edwin
Nightingale Chris Earl
Shahbazpour Mehdi
Shotbolt Aidan Mark
Trousdell Michael John Blood
Dawson Glenn K.
Fisher & Paykel Healthcare Limited
Trexler, Bushnell Giangiorgi, Blackstone & Marr, Ltd.
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