A rotationally expandable atherectomy cutter assembly for cutting plaque from a stenosis in an artery includes a plurality of radially separated and axially aligned blade elements. The distal ends of each blade element are fixably connected to a hub and the proximal ends of each blade element slidably...http://www.google.fr/patents/US5192291?utm_source=gb-gplus-shareBrevet US5192291 - Rotationally expandable atherectomy cutter assembly
