Patent ID: 7470263

Claim:
An ostomy system for receiving bodily waste, comprising: a gas impermeable outer bag; a water impermeable inner bag enclosed within the outer bag; a coupling system for attaching the bag to the body of a patient and for securing the inner bag in relation to the patient's body and for securing the outer bag in relation to the inner bag, the coupling system defining an orifice to enable bodily waste from a stoma to be received by the inner bag, said coupling system including, a body flange configured to be attached to the patient's body, the body flange defining a central opening with an inwardly facing rim portion; an outer flange defining a central opening with an inwardly facing rim portion; and a barrier for preventing liquids and solid particles from passing from the inner bag to the outer bag, at least part of said barrier being permeable to flatus gases, said barrier being in the form of a ring-shaped member defining a central opening with an inwardly facing rim portion, said ring-shaped barrier being sandwiched between the body flange and the outer flange such that the respective radially inwardly facing rim portions of the body flange, the barrier and the outer flange define a boundary of the orifice so that the flatus gases enter the barrier through the radially inwardly facing rim portion thereof; and the inner bag being sealed to an outer surface of the outer flange so that flatus gases may only escape from the inner bag through the barrier, and the gas impermeable outer bag being arranged such that flatus gases escaping the inner bag through the barrier enter the outer bag, said outer bag including an outlet with a flatus filter for releasing flatus gases from the outer bag to the environment.