Expandable stent grafts

A stent graft assembly comprising:

• a tubular graft member having a lumen disposed about a longitudinal axis, the graft member comprising a graft material;
• a support frame extending axially and circumferentially around the longitudinal axis, being movable between a compressed state and a radially expanded state;
• and
• at least one fastener that secures the tubular graft member to the support frame in a manner that permits the support frame to move circumferentially with respect to the tubular graft member when the support frame is moved between the compressed state and the expanded state;
• wherein the support frame comprises a sheet of biocompatible material having a specified thickness and reinforced with a reinforcing member extending longitudinally therealong and a plurality of cells extending laterally from said reinforcing member in a surface of said sheet of material, selected of said cells being a closed cell and including a fixedly sized aperture extending through said surface of said sheet of material, said sheet of material having a tubular shape including an overlapping state in which certain of said cells overlap said reinforcing member while none of cells overlap each other and form a combined thickness anywhere along said reinforcing member of no more than substantially twice said specified thickness of said sheet of material.