oated implantable medical deviceUS78716586 f???vr. 200818 janv. 2011Advanced Cardiovascular Systems, Inc.polymer such as polylactic acid can include a drug, and a solvent ( ethanol, dimethylsulfoxide) for coating the stent can be discharged from separate tubes disposed within another tube carrying moving air, polymer and the solvent mix together when they are discharged and are atomized by the air