Metered dose inhaler agitator
First Claim
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1. An assembly for administration to the respiratory tract of a mammal orally or intranasally, a pharmaceutically active medication, which comprises;
- (a) a hollow tube having(i) a first open end adapted by size and configuration to receive an aerosol canister containing a plurality of unit doses of the medication;
(ii) a second open end adapted by size and configuration to couple with the oral or nasal cavities of a mammal;
(iii) a hollow defined by the tube wall between the first and second open ends;
(b) an aerosol canister having a top and a bottom and a metering valve on the canister top for the release of a predetermined dose of a contained medication for administration to a mammal, positioned in the first open end of the tube;
(c) means for the valved release of a unit dose of medication from the aerosol canister; and
(d) means for agitating the medication in the aerosol canister, whereby a homogeneous mixture of the aerosol is obtained for release.
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Abstract
A metered dose inhaler including a mechanism for agitating the medicament formulation prior to its separation in a measured dose, for administration to a mammal, including a human. The separated dose is a homogeneous mixture of prescribed medicine in a fluid carrier.
56 Citations
7 Claims
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1. An assembly for administration to the respiratory tract of a mammal orally or intranasally, a pharmaceutically active medication, which comprises;
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(a) a hollow tube having (i) a first open end adapted by size and configuration to receive an aerosol canister containing a plurality of unit doses of the medication; (ii) a second open end adapted by size and configuration to couple with the oral or nasal cavities of a mammal; (iii) a hollow defined by the tube wall between the first and second open ends; (b) an aerosol canister having a top and a bottom and a metering valve on the canister top for the release of a predetermined dose of a contained medication for administration to a mammal, positioned in the first open end of the tube; (c) means for the valved release of a unit dose of medication from the aerosol canister; and (d) means for agitating the medication in the aerosol canister, whereby a homogeneous mixture of the aerosol is obtained for release. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An assembly for administration to the respiratory tract of a mammal orally or intranasally, a pharmaceutically active medication, which comprises;
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(a) a hollow tube having (i) a first open end adapted by size and configuration to receive an aerosol canister containing a plurality of unit doses of the medication; (ii) a second open end adapted by size and configuration to couple with the oral or nasal cavities of a mammal; (iii) a hollow defined by the tube wall between the first and second open ends; (b) an aerosol canister having a top and a bottom and a metering valve on the canister top for the release of a predetermined dose of a contained medication for administration to a mammal, positioned in the first open end of the tube and movable from the first open end towards the second open end, along a line co-incident with the axis of the tube hollow; (c) a spray-directing stem mounted in the tube hollow on an axial line co-incident with the axis of the tube hollow at a point between the first and second open ends, to receive the canister when moved from the first open end towards the second open end, whereby there occurs a valved release of a unit dose of medication from the canister; (d) a piezoelectric crystal mounted in the tube hollow at a point to contact the canister when moved towards the second end; and (e) electric circuit means connected to the piezoelectric crystal for energizing the crystal when in contact with the canister.
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Specification