A stent graft delivery system includes a handle, a guidewire catheter extending distally from the handle, at least one tube, and at least one wire extending through the at least one tube, wherein each wire of the stent graft delivery system is configured as a loop at the distal end of the tube. The stent graft delivery system can be employed to implant stent grafts in a patient to thereby treat, for example, an aortic aneurysm spanning a region of an aorta that includes at least one arterial branch.