| 摘要 |
A device for generating an artificial constriction in the gastrointestinal tract comprises a band ( 1 ), which can be placed annularly about a particular portion of the gastrointestinal tract, and 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 ) fillable with a filling medium and extending at least over a large portion of the length of the band ( 1 ), and upon filling the hollow chamber ( 14 ) a wall ( 11 ), delimiting the throughlet opening ( 6 ) of the band ( 1 ), extends in the direction toward the axis ( 7 ) of the throughlet opening decreasing the size of the throughlet opening. The device comprises further a foamed material body ( 13 ), connected with the band ( 1 ), which adjoins the surface ( 12 ), facing away from the throughlet opening ( 6 ), of the wall ( 11 ) delimiting the throughlet opening. The foamed material body ( 13 ) is adhered to the wall ( 11 ) at least over a large portion, preferably over the entire area, of its area in contact with the wall ( 11 ).
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