Minimizing powder retention on surfaces
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United States of America Patent
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Issued Date -
Dec 29, 2005
app pub date -
Jun 17, 2005
filing date -
Jun 18, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a method for improving the powder output, i.e. the emitted medication dose, from a dry powder inhaler device by minimizing the powder retention inside the device. Also therapeutic efficacy of the metered medication dose is hereby improved. It is found that adding a smaller amount of excipient than would be necessary in an ordered mixture, to a metered dose of an API formulation raises the emitted API dose when the dose is inhaled together with the excipient.
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