Patent ID: 6510969
Filing Date: 2003-01-28
Classification: A61K,B65D,C21B,C22B,Y02P

Abstract:
A drug product comprising:an aerosol container containing a suspension of drug particles in a liquid propellant in communication with a metering valve comprising: a valve body; a metering chamber; a valve stem; one or more stem seals; and, at least one orifice in the valve body; and, a ring having a trough disposed around the valve body, wherein the ring further includes an annular wall interrupted with a plurality of slots forming a plurality of vanes, wherein, upon shaking of the valve, the suspension flows around the plurality of vanes assisting in dispersion of drug particles in the suspension; wherein the metering valve is suitable for dispensing the suspension of drug particles in the liquid propellant, and, wherein the drug is a member selected from the group consisting of salmeterol, salbutamol, formoterol, ipratropium, fluticasone, beclomethasone, budesonide, terbutaline, salts, esters and solvates thereof, and combinations thereof.