Patent ID: 7118526

Claim:
Device for generating an artificial constriction in the gastrointestinal tract with a band ( 1 ), which can be placed annularly about a particular portion of the gastrointestinal tract, a closure device ( 2 ) for connecting the end regions of the band ( 1 ), placed annularly about the portion of the gastrointestinal tract, which, in the closed state of the closure device ( 2 ), encompasses a throughlet opening ( 6 ), the band ( 1 ) comprising a hollow chamber ( 14 ), which can be filled with a filling medium, extending at least over a large portion of the length of the band ( 1 ), and, upon filling the hollow chamber ( 14 ), a wall, delimiting the throughlet opening ( 6 ), of band ( 1 ) extends in the direction toward the axis ( 7 ) of the throughlet opening decreasing the size of the throughlet opening, and a foamed material body ( 13 ) adjoining the surface, facing away from the throughlet opening ( 6 ) of the wall ( 11 ) delimiting the throughlet opening, and the foamed material body ( 13 ) is adhered on the wall ( 11 ) at least over a large portion of its area in contact with the wall ( 11 ).