Abstract: A delivery system for placing a gastrointestinal device in a mammalian gastrointestinal tract comprises a container assembly; a gastrointestinal implant device that includes proximal and distal ends stored within the container assembly, the proximal end including an anchor and the distal end including a sleeve, coupled to the anchor and folded into the container assembly; and an inner extension to draw a portion of the sleeve from the anchor and from the container assembly as the anchor is retained therein. The inner extension comprises an atraumatic tip, such as a ball, that includes a guidewire rail. Further, a handle is provided that retains or captures an inner catheter within the handle. Within the handle is an elongated element that surrounds a portion of the catheter. A button on a side of the handle is configured to cause engagement of the catheter via the element when the button is depressed.