Respiratory dispersion for metered dose inhalers comprising perforated microstructures
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United States of America Patent
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Aug 21, 2012
Grant Date -
Dec 30, 2010
app pub date -
Sep 3, 2010
filing date -
Sep 29, 1997
priority date (Note) -
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Abstract
A respiratory dispersion for pulmonary delivery comprises one or more bioactive agents, a suspension medium, and a plurality of perforated microstructures having a mean aerodynamic diameter of less than 5 μm. The suspension medium comprises at least one propellant and permeates the perforated microstructures.
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