A device for sealing of a natural or an artificial intestinal outlet of the large bowel or colon or, respectively, of the straight intestine or rectum of a patient, as well as for closing it and/or for removing the stool out of it, especially for a continuous drainage and/or intermittent irrigation, preferably into an external receptacle formed like a bag, wherein the device a) comprises an inflatable balloon approximately with a ring-shaped structure, which is formed from a two-dimensional, everted tube section and comprises one or more compartiments fillable with fluid; b) is subdivided into a radially extended region as an intrarectal segment for the insertion into the rectum, as well as into an, in contrast, tapered region as a transanal segment, which, during the use, remains at least partially outside of the rectum; c) and comprises a central drain lumen for drainage of stool and irrigation fluid, hich penetrates both the intrarectal segment and the transanal segment, characterized in that d1) either only the transanal segment comprises a transanal compartment fillable with fluid, d2) or both the intrarectal segment and the transanal segment each comprises a compartment (6, 28) fillable with a fluid, wherein both compartments are functionally and spatially separate from each other, in particular can be filled and/or drained separately; e) wherein the transanal compartment is formed basically out of concentric tube layers (27a, 27b), which are formed in such a way that f) when the transanal compartment is evacuated and thus empty, intermediate the concentric tube layers (27a, 27b) of the transanal segment, these tube layers are adjacent to each other, so that the central drain lumen is maximally open, wherein, however, an external force causes a collapsing, i.e. a lumen-closing deformation, of the central drain lumen, g) whereas in the plumply filled state of the transanal compartment, intermediate the concentric tube layers (27a, 27b) of the transanal compartment, both tube layers separate from each other, wherein the inner tube layer unfolds itself into the central drain lumen and thereby closes the drain lumen, while the outer tube layer widens radially towards the wall of the anal canal and causes its sealing. a) comprises an inflatable balloon approximately with a ring-shaped structure, which is formed from a two-dimensional, everted tube section and comprises one or more compartiments fillable with fluid; b) is subdivided into a radially extended region as an intrarectal segment for the insertion into the rectum, as well as into an, in contrast, tapered region as a transanal segment, which, during the use, remains at least partially outside of the rectum; c) and comprises a central drain lumen for drainage of stool and irrigation fluid, hich penetrates both the intrarectal segment and the transanal segment, d1) either only the transanal segment comprises a transanal compartment fillable with fluid, d2) or both the intrarectal segment and the transanal segment each comprises a compartment (6, 28) fillable with a fluid, wherein both compartments are functionally and spatially separate from each other, in particular can be filled and/or drained separately; e) wherein the transanal compartment is formed basically out of concentric tube layers (27a, 27b), which are formed in such a way that f) when the transanal compartment is evacuated and thus empty, intermediate the concentric tube layers (27a, 27b) of the transanal segment, these tube layers are adjacent to each other, so that the central drain lumen is maximally open, wherein, however, an external force causes a collapsing, i.e. a lumen-closing deformation, of the central drain lumen, g) whereas in the plumply filled state of the transanal compartment, intermediate the concentric tube layers (27a, 27b) of the transanal compartment, both tube layers separate from each other, wherein the inner tube layer unfolds itself into the central drain lumen and thereby closes the drain lumen, while the outer tube layer widens radially towards the wall of the anal canal and causes its sealing.