Method and apparatus for limiting absorption of food products in specific
parts of the digestive system is presented. A gastrointestinal implant
device is anchored in the pyloric portion of the gastrointestinal system
and extends beyond the ligament of Treitz. All food exiting the stomach
is funneled through the device. The gastrointestinal device includes an
anchor for anchoring the device in the pyloric portion and a flexible
sleeve that extents into the duodenum. The anchor is collapsible for
endoscopic delivery and removal.