A stent delivery system comprising an elongate inner structure, a tubular endoprosthesis holder supported on said elongate inner structure and in coaxial relation therewith, said endoprosthesis holder comprising, the endoprosthesis holder fixed in a coaxial relationship to said elongate inner structure, the endoprosthesis holder comprising a proximal connector structure having an outer surface, a distal connector structure having an outer surface and an intermediate connector structure having an outer surface extending between the proximal and distal connector structure, the outer surface of the at least one of the proximal connector structure, the distal connector structure or the intermediate connector structure comprising at least one outward protrusion.
