The invention provides a method of manufacturing a stent, the method comprising: disposing a polymeric tube into a cylindrical mold, the cylindrical mold having a variable diameter along a portion of the inside surface of the mold; radially expanding the tube by blowing a gas or liquid into the cylindrical...http://www.google.com/patents/US7740791?utm_source=gb-gplus-sharePatent US7740791 - Method of fabricating a stent with features by blow molding
