The present invention concerns a device allowing the creation of an alimentary bolus flow between two stomas (S1； S2), comprising: - means forming a pump (14, 131)； - first/second sealed connection means (1) capable of connecting said suction opening to an upstream/downstream stoma (S1； S2) located on the abdominal wall of a patient； and - first and/or second anti-reflux means (21, 3； 41, 3). According to the invention, said first and/or second anti-reflux means comprise a cavity (21； 41) into which said alimentary bolus passes, an inflatable balloon (3) mounted in said cavity and means (G) for inflating said balloon, that make it possible to modify the inflation of the latter, and said balloon (3) is shaped to shift from an open position in which said balloon (3) is partially inflated and has a neck (32) allowing the passage of the alimentary bolus, to a closed position in which said balloon (3) is more inflated than in said open position and in which said balloon is in contact with the wall of said cavity and said neck (32) is sealed as a result of the portion of the wall of said balloon defining said neck (32) being compressed against itself, at least over a portion of the height of said neck (32).La présente invention concerne un dispositif permettant de créer un flux de bol alimentaire entre deux stomies (S1； S2), du type comportant : - des moyens formant pompe (14, 131)； - des premiers/deuxièmes moyens de connexion étanche (1) aptes à relier ladite ouverture d'aspiration à une stomie amont/aval (S1； S2) située sur la paroi abdominale d'un patient； et - des premiers et/ou deuxièmes moyens anti-reflux (21, 3； 41, 3). Selon l'invention, lesdits premiers et/ou deuxièmes moyens anti-reflux comportent une cavité (21； 41) dans laquelle transit ledit bol alimentaire, un ballonnet gonflable (3) monté dans ladite cavité et des moyens de gonflage (G) dudit ballonnet qui permettent de modifier le gonflement de ce dernier, et ledit ballonnet (3) est conformé pour passer d'
