Abstract: A device is provided for percutaneously restricting a stomach lumen in which an outer casing surrounds a needle to define a space between the outer casing and the needle. A suture is provided in the space between the outer casing and the needle, and a plurality of disks are provided along the suture. The needle is adapted to pierce a wall of the lumen at a plurality of positions. The outer casing is retractable with respect to the needle to provide an opening through which the disks individually exit the space between the outer casing and the needle at each of the plurality of positions. And the lumen is restricted by drawing together the disks along the suture.