Substrates for drug delivery device and methods of preparing and use
First Claim
Patent Images
1. A drug-supply assembly comprising:
- a heat conductive substrate;
a non-reactive exterior surface on the heat conductive substrate; and
a film comprising a compound on the non-reactive exterior surface.
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Abstract
An assembly and method for producing a condensation aerosol are disclosed. The assembly includes a heat-conductive metal substrate with an oxidation resistant exterior surface and a drug composition film on the exterior surface and is for use in an aerosol device. The thickness of the film and the surface of the substrate is such that the aerosol formed by vaporizing and condensing the drug composition the aerosol contain 10% by weight or less drug-degradation products and at least 50% of the total amount of the drug composition in the film. The methods for treating the exterior surface include heat and chemical treatment and formation of a protective overcoat.
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Citations
50 Claims
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1. A drug-supply assembly comprising:
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a heat conductive substrate;
a non-reactive exterior surface on the heat conductive substrate; and
a film comprising a compound on the non-reactive exterior surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An assembly for use in a condensation aerosol device comprising
(a) a heat-conductive metal substrate having an oxidation resistant exterior surface, and (b) a drug composition film on the exterior surface, where the film thickness and exterior surface are such that an aerosol formed by vaporizing the drug composition by heating the substrate and condensing the vaporized drug composition contains 10% by weight or less drug-degradation products and at least 50% of the total amount of the drug composition in the film.
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31. A drug-supply assembly made by a process comprising:
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treating an exterior surface of a heat-conductive substrate to increase the oxidation resistance of the exterior surface; and
coating at least a portion of the oxidized exterior surface of the substrate with a compound to generate a film. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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40. A method of making a drug-supply assembly comprising:
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treating an exterior surface of a heat-conductive substrate to increase the oxidation resistance of the exterior surface; and
coating at least a portion of the oxidized exterior surface of the substrate with a compound to generate a film. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A method of increasing the purity of drug condensation particles in a condensation drug aerosol that is produced by substantially vaporizing and condensing a drug film on a substrate comprising substantially vaporizing a drug composition on an oxide-enriched metal substrate and condensing the vapor to form drug particles.
Specification