Patent ID: 7341630

Claim:
A stent coating system, comprising: a solvent pump that pumps a solvent contained in a solvent reservoir; a polymer pump that pumps a polymer contained in a polymer reservoir; an atomizer that atomizes the solvent and polymer; and a nozzle assembly having a polymer feed conduit, in fluid communication with the polymer reservoir, that dispenses the polymer, a solvent feed conduit, in fluid communication with the solvent reservoir, that is not in fluid communication with the polymer feed conduit and dispenses the solvent, wherein the solvent mixes with the polymer only after the polymer and solvent are dispensed out from the nozzle assembly, and an atomizing air conduit, in communication with the atomizer, that is not in fluid communication with the polymer feed conduit and the solvent feed conduit and that uses atomizer air from the atomizer to atomize the solvent and polymer that are dispensed out from the nozzle assembly; wherein the polymer reservoir holds a polymer and drug mixture.