The present invention relates to a device for creating a bolus flow between two ostomies (s1； s2), of the type comprising:? pump forming means (14, 131)； ? first / second watertight connecting means (1) for connecting said suction opening to an upstream / downstream ostomy (s1； s2) situated 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 food bolt transits, an inflatable balloon (3) mounted within said cavity and inflation means (g) said balloon which allows to modify the inflation of the latter, and said balloon (3) is shaped to pass from an opening position, in which said balloon (3) is partially inflated, and has a neck (32) which allows the passage of the food bolt to a closed position in which said balloon (3) is more inflated than in said opening position and in which said balloon is in contact with the wall of said cavity, and said neck (32). ) is filled due to crushing of the wall portion of said balloon defining said neck (32) on itself at least a portion of the height of said neck (32).a presente invenção se refere a um dispositivo que permite criar um fluxo de bolo alimentar entre duas ostomias (s1； s2), do tipo que compreende: ? meios que formam bomba (14, 131)； ? primeiros/segundos meios de conexão estanque (1), próprios para ligar a dita abertura de aspiração a uma ostomia a montante/a jusante (s1； s2), situada sobre a parede abdominal de um paciente； e ? primeiros e/ou segundos meios antirrefluxo (21, 3； 41, 3). de acordo com a invenção, os ditos primeiros e/ou segundo meios antirrefluxo compreendem uma cavidade (21； 41) dentro da qual transita o dito bolo alimentar, um balão inflável (3) montado dentro da dita cavidade e meios de inflação (g) do dito balão que permitem modificar ao inflação desse último, e o dito balão (3) é conformado para passar de uma posição de abertura, na qual o di
