Delivery devices

Details Delivery devices Delivery devices

2011-05-03

2011-05-03

Douglas, Steven O (Department: 3771)

Surgery

Respiratory method or device

Respiratory gas supply means enters nasal passage

C128S203210, C128S205210, C128S207140

Reexamination Certificate

active

07934503

ABSTRACT:
A delivery device for and method of delivering substance, the delivery device comprising: a delivery outlet (7) from which substance (S) is in use delivered; a gas chamber (17) containing a gas and being of reducible volume, wherein a reduction in the volume of the gas chamber (17) to a predeterminable volume acts to pressurize the contained gas to a predeterminable pressure; a seal element (11) disposed between the gas chamber (17) and the delivery outlet (7); and an opening mechanism configured, on reduction of the volume of the gas chamber to a predeterminable volume, to open the seal element (11), whereupon a gas flow from the gas chamber (17) acts to deliver substance (S) from the delivery outlet (7).

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