GASTROINTESTINAL IMPLANT

The invention relates to an implant for arranging and expanding in the human gastrointestinal tract for the purpose of lining a section of the gastrointestinal tract in order to prevent the resorption of supplied nourishment in said section, having a first end section (1) which, as a securing section, allows the fixation of the implant in the human stomach/gastrointestinal tract and/or to an applicator (10); a tubular section which adjoins the first end section (1), comprising a longitudinal section (2) which extends in the provided expansion direction, a transition section (3) which adjoins the longitudinal section (2), and an inverted section (4) which runs within the longitudinal section opposite the provided expansion direction; and a second end section (8). According to the invention, a region of the inverted section (4) and a region of the longitudinal section delimit a flow channel (5), via which a fluid (15) blown into the tubular section can penetrate the transition section (3) in order to exert pressure thereon, wherein the inverted section (4) radially delimits a cavity (6) and has a closure section (7) which forms the second end section (8) and axially delimits the cavity (6).