erUS78716586 Feb 200818 Ene 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 airUS787523318 Jul 200525 Ene 2011Advan