Abstract

Metal stents are placed in coronary arteries as an adjunct to balloon angioplasty with increasing frequency. The long term follow up to these clinical stenting procedures in currently three years. There is no published experience for longer periods and many concerns have been raised, including metal fatigue, stress-enhanced corrosion and stress-enhanced damage to adjacent healthy tissue. As a potential improvement to current metal stent designs, we are developing more compliant polymeric stents, employing bioresorbable materials.

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