<qa>  What is the purpose of the TAXUS IV-SR trial?The purpose of the TAXUS IV-SR trial is to study the safety and efficacy of the TAXUS Stent under controlled trial circumstances used in the treatment of new coronary artery lesions heart blockages This clinical investigation will evaluate the safety and effectiveness of the TAXUS Stent with 1 ugmm2 loaded drugstent surface area of paclitaxel incorporated into a slow rate-release formulation of a triblock copolymer carrier system for treatment of new coronary artery lesions. 