Patent ID: 7645442

Claim:
A device for producing a condensation aerosol comprising (a) a chamber comprising an upstream opening and a downstream opening, the openings allowing gas to flow therethrough (b) a heat-conductive substrate, the substrate located at a position between the upstream and downstream openings, (c) a drug composition film on the substrate, the film comprising a therapeutically effective dose of a drug when the drug is administered in aerosol form (d) a heat source for supplying heat to said substrate to produce a substrate temperature greater than 300° C., and to substantially volatilize the drug composition film from the substrate in a period of 2 seconds or less, and (e) means for producing an air flow across the substrate producing aerosol particles by condensation, wherein the device produces a condensation aerosol containing about 10% or less by weight drug composition degradation products and at least 50% of the drug composition of said film.