A technique for deploying an intraluminal device, such as a bariatric device, in a mammalian lumen, such as the gastrointestinal tract, includes positioning a visualization device through an orifice, such as a natural orifice, into the mammalian lumen. A deployment device having the intraluminal device mounted thereto is guided to the mammalian lumen. The intraluminal device, which has a lumen wall that is configured to the size and shape of a portion of the mammalian lumen, is at least partially deployed from the deployment device in the mammalian lumen. The at least partially deployed intraluminal device is positioned with the deployment device while a position of said intraluminal device is visualized with the visualization device.
