A delivery system (100) for introducing a bundled intragastric bag (130) into a gastric lumen (150) are described. The delivery system includes a pushing mechanism movable between an unexpanded and expanded configuration. The pushing mechanism (196) in its expanded configuration pushes each of the bundles (310) of the bag into the gastric lumen. A suture (170, 180) strand is periodically pulled during the procedure to help create doughnut- shaped bundles. Another suture strand extends between a proximal button and distal button of the deployed assembly to maintain the doughnut- shaped bundle structure.
