Metering device for the inhalation of a pulverulent substance
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United States of America Patent
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Feb 20, 2018
Issued Date -
N/A
app pub date -
Sep 9, 2013
filing date -
Nov 22, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A metering device activated by a user induced airstream for an inhalation of a medicinal substance. The device includes: a closure cap; a piston; a mouthpiece; and an annular chamber disposed upstream of the mouthpiece. A storage chamber stores the substance which can be moved out of the storage chamber when the closure cap is removed. A metering rod for removing the medicinal substance out of the storage chamber into an emptying-standby position. In the emptying-standby position, the metering chamber is closed by the piston. The piston is displaceable by airstream into an emptying-release position. In the emptying-release position, a metering chamber is released and the substance removed by the suction airstream. The metering device includes an outer cylinder which accommodates an inner cylinder.
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