Dry powder inhaler
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 30, 2003
Grant Date -
Jul 11, 2002
app pub date -
Jan 8, 2001
filing date -
Jan 8, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dry powder inhaler having a housing, at least one single dose storage chamber able to contain a single unit dose, a discharge path adjacent the storage chamber, and a flexible and bendable seal plate closing the discharge path. When an air flow under pressure is applied to the top of the dose, the top seal is broken and the dose is driven against the seal plate which deflects away, allowing the powder of the dose to be driven into and along the discharge path. The air flow causes the seal plate (in the discharge path) to vibrate, which acts to break up the dose into particles of preferred size, as the dose is carried along with the air flow and delivered to a patient.
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Family
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