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 mold, the outside surface of the tube
conforming to the variable diameter portion of the outside surface of the
mold, causing the radially expanded tube to have a variable diameter
along the conformed length of the tube; and fabricating a stent from the
expanded tube.