Dry powder inhaler
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United States of America Patent
Stats
-
Jul 13, 1999
Issued Date -
N/A
app pub date -
Jul 22, 1996
filing date -
Apr 24, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drug powder inhaler has a cover plate pivotably attached to a lid on an inhaler housing. A lever is pivotably attached to the cover plate. A blister pack disk is rotatably mounted on the housing under the cover plate. A powder duct in the housing extends from a staging chamber underneath one end of the lever to an aerosolizing chamber. An actuator in the housing is pressed to shear open a blister on the blister pack disk and thereby deliver the drug dose contents of the blister into the staging chamber. A switch senses pressure in the mouthpiece and switches on a motor spinning an impeller within the aerosolizing chamber, when inhalation is detected.
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