Method and device for delivering aerosolized medicaments
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Abstract
A device for accurately delivering aerosolized doses of a medicament disperses a measured amount of drug in a measured volume of carrier gas and transfers the resulting aerosol to a chamber prior to inhalation by a patient. The chamber is filled efficiently with the aerosol, and inhalation by the patient draws the aerosol dose into the lungs. This is followed by the inhalation of atmospheric air that will push the initial dose well into the lung interiors. The apparatus optimally includes a dose regulator, a counter, a clock, a dose memory and a signal to indicate when a dose is ready for inhalation. Optimal chamber designs are disclosed.
112 Citations
19 Claims
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1. (canceled)
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2. Au apparatus for producing aerosolized medicament, the apparatus comprising:
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a reservoir containing a powder medicament to be aerosolized, the powder medicament comprising a protein or polypeptide; and
a chamber comprising an inlet and a mouthpiece, wherein gas may flow into the chamber through the inlet and may flow out of the chamber through the mouthpiece and wherein the flow of gas aerosolizes the powder medicament, wherein at least 40 percent by weight of the powder medicament is suspended by the gas in the chamber for delivery rough the mouthpiece. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for producing aerosolized medicament, the apparatus comprising:
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a reservoir containing a powder medicament to be aerosolized, the powder medicament comprising a protein or polypeptide; and
a chamber comprising an inlet and a mouthpiece, wherein gas may flow into the chamber through the inlet and may flow out of the chamber through the mouthpiece and wherein the flow of gas aerosolizes the powder medicament, wherein the volume of the aerosolized medicament is from 9.24 percent to 21.5 percent of the volume of the chamber. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification