Nasal continuous positive airway pressure device and system

Details Nasal continuous positive airway pressure device and system Nasal continuous positive airway pressure device and system

2005-12-02

2009-08-25

Yu, Justine R (Department: 3771)

Surgery

Respiratory method or device

Face mask covering a breathing passage

C128S204230, C128S204180

Reexamination Certificate

active

07578294

ABSTRACT:
An nCPAP device including a generator body defining first and second fluid flow circuits each including a tube and first and second nozzles. The tube defines a passageway forming an axial centerline. The first and second nozzles are associated with the tube and each defines an inlet and an outlet. The inlets are open to a fluid supply, whereas the outlets are open to the passageway. Each nozzle is adapted to emit a fluid jetstream from the outlet along a flow direction axis. The nozzles are arranged such that the flow direction axes are non-parallel relative to each other and relative to the axial centerline. This configuration readily induces vortex shedding during an expiratory phase, thus facilitating jet fluid flow disruption and reducing a patient's work of breathing.

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