LAS VEGAS--(BUSINESS WIRE)--Preliminary data presented today at the 32nd annual SCAI Scientific Sessions show that 82 percent of patients treated with Cook Medical’s Zilver® PTX™ drug-eluting peripheral stent were free from reintervention at two-year follow up. The ongoing Zilver PTX Registry study, involving 792 patients from across the world, is assessing the safety and efficacy of the Zilver PTX in treating PAD.