System for dispensing pharmaceutical active compounds
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United States of America Patent
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Mar 26, 2002
Issued Date -
N/A
app pub date -
May 10, 1999
filing date -
Dec 11, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system for dispensing a clinically effective dose of an inhalable, pharmaceutically active compound, which system includes a dry powder inhaler device containing a powder containing the pharmaceutically active compound, wherein (a) of the powder particles dispensed by the inhaler device (the 'metered DPI dose'), at least 40% are less than about 10 microns in diameter at the point the particles exit the inhaler, (b) the metered DPI dose is sufficient to produce a clinically effective result in a patient; and (c) the amount of the compound in the metered DPI dose is not more than 70% of the minimal amount of the compound which, when dispensed in a pressurized metered dose inhaler, produces an equivalent clinically effective result in the same patient.
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