The invention provides a drainage bag assembly for receiving bodily waste； the drainage bag assembly comprising outer (6) and inner (12) bags secured to one side of a flange (2), the flange (2) being provided with means defining an orifice to 5 enable bodily waste to be received by the inner bag (12), and the flange (2) having connected to an opposite side thereof means for securing the drainage bag assembly to the body of a patient； the outer bag (6) being detachably secured by means of a peelable but non-repositionable adhesive to a first attachment zone (4) on the flange and the inner bag being detachably secured by means of a peelable adhesive to a 0 second attachment zone (16) on the flange, wherein the first attachment zone (4) surrounds the second attachment zone (16) and is non-overlapping therewith； and the second attachment zone (16) surrounds the means defining the orifice； and wherein the outer bag (6) can be removed or opened to permit access to the interior thereof and removal of the inner bag (12).
