A Study to Evaluate Safety and Efficacy of the ExcelTM Sirolimus Eluting Stent With a Biodegradable Polymer Versus Sirolimus Eluting Stent With Non-Biodegradable Polymer in the Treatment of Patients With de Novo Coronary Artery Lesions

Patients will be randomly assigned (2:1) to one of two treatment arms (the Excel DES or the Cypher DES). Randomization will be stratified by study site and number of vessels intended to be treated by the site investigator. Randomization will be accomplished through use of envelope randomization at the sites using the pre-assigned envelope randomization system. The study patient is considered enrolled upon randomization.