A stent graft for treating an arterial aneurysm includes a ligature traversing at least a portion of struts of stents, the ligature having ends that, when linked, at least partially constrict a radial dimension of the stents. The ends of the ligature can be linked by a wire in a stent graft delivery system that threads anchor loops longitudinally spanning ends of the ligature to maintain the stent in a radially constricted position during delivery to the aneurysm. The stent graft can be implanted at the aneurysm by retracting the wire from the linked ends of the ligature and from the anchor loops, thereby releasing the associated stent from the radially constricted position.
