Abstract: For the discharge of intestinal gases at reduced pressure, use is made of a cylindrical hollow body of flexible material, which is rounded at the insertion end and which is made up of a front part and a rear part. The side wall has gas intake openings and connected to the second end region of the hollow body for the outlet of gas is a flexible thin tube which reduces the outlet cross-section from the hollow body as far as possible and which leads to the exterior, as the small outside diameter of the tube permits the hollow body to be positioned beyond the spincter muscle. The tube preferably extends into the collecting space of the hollow body to close to the insertion end.