A delivery system (100) for an endoprosthesis (202) includes a spindle (120) having a spindle body (122) and spindle pins (124) extending radially outward from the spindle body (122). The delivery system further comprises a tip (102) comprising a sleeve (112), the spindle pins (124) extending from the spindle body (122) toward the sleeve (112). The endoprosthesis (202) includes a proximal anchor stent ring (208B) having spindle pin catches (1202) and anchor pins (608). The spindle pins (124) of the spindle (120) extend into the spindle pin catches (1202) and the sleeve (112) radially constrains the anchor pins (608).
