Abstract: A colonic endoprosthesis includes a tubular jacket element which consists of two tubular members which are telescopically received within one another and arrested in a telescoped position thereof when the tubular jacket element is implanted in the body of a user. A container element consisting of a hollow support member and an elastic lining member received in the hollow support member is removably insertable into the jacket element and retained in the fully inserted position thereof. The distal end of the intestinal tract of a user is connected to and communicates with the colonic endoprosthesis for the digested matter to enter and accummulate in the elastic lining member mounted on the support member of the container element until the time for emptying the hollow support member.