The invention is directed to a device for sealing a natural or artificial opening of the large intestine, or the rectum, of a patient, and for occluding same, and/or for removing stool therefrom, particularly for continuous, and/or intermittent irrigation, preferably into an external, bag-like collection container, comprising an inflatable balloon with an approximately annular structure formed from a flat, everted tube section, wherein the outer layer of the everted tube section is provided with a radially enlarged region for insertion into the rectum, and has a region that is tapered relative thereto, and that remains at least regionally outside the rectum during use, the intrarectal balloon section having no functional or spatial connection to the transanal balloon section.
