An endoluminal prosthesis (10) comprises a graft (20) having a tubular body comprising proximal and distal ends (22,24), inner and outer surfaces, and partially and fully deployed states. A temporary channel (120) is disposed external to the outer surface of the graft (20) in the partially deployed state. The temporary channel (120) begins at one of the proximal and distal ends (22,24) of the graft (20), and extends along only a portion of a longitudinal length of the graft (20). The temporary channel (120) is removed when the graft (20) is in a fully deployed state.
