Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2007-03-06
2007-03-06
Mitchell, Teena K. (Department: 3771)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S203150, C128S204260
Reexamination Certificate
active
10257745
ABSTRACT:
An aerosolization device comprises a housing having a mouthpiece, and a flow path arrangement in fluid communication with the mouthpiece. The flow path arrangement has a flow regulating valve and a threshold valve, where the threshold valve is configured to open at a first vacuum level and to close at a second vacuum level that is less than the first vacuum level. The housing includes a region that is adapted to hold a powder in fluid communication with the flow path arrangement so that air drawn through the mouthpiece opens the threshold valve once the first vacuum level is exceeded and remains open until the vacuum falls below the second vacuum level. The flow rate of the air drawn through the mouthpiece is regulated by the flow regulating valve to remain within a certain range while the threshold valve remains open.
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Alston William
Smeulders Stephen
Lopez Amadeus
Mitchell Teena K.
Nektar Therapeutics
Tucker Guy V.
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