A delivery device for deploying an expandable, endoluminal prosthesis within a body vessel is disclosed. The delivery device may include one or more stent graft retention scaffolds having a plurality of arches, each arch encompassing an aperture forming a helical path and a trigger wire passing through at least two of the apertures following the helical path, wherein at least a portion of the stent graft is retained in a compressed configuration on the delivery device by the retention scaffold and trigger wire.
