Will drug-eluting stents prove safer and more effective without a metal structure? For all their merits, current stent technologies still present a series of drawbacks, including the severe complication of late thrombosis. Biodegradable polymers may hold the key to minimizing this and other concerns. Host Dr. Doug Weaver discusses the most promising areas of research in this area with Dr. Martin Leon, professor of medicine and associate director of the Center for Interventional Vascular Therapy at Columbia University Medical Center in New York City.