An implantable artificial intestine section is provided for being connected to a surgically created lateral opening in a wall of a patients intestine. The other end portion thereof may be connected to a surgically created stomy, the patients rectum or anus, the patients small intestine or the patients large intestine. Alternatively, the artificial intestine section may be connected with both open ends to surgically created lateral openings in the wall of the patients intestine, so as to form a by-pass. Further implantable elements, such as a flow control device, a pump, a motor, a control unit and the like may be combined with the artificial intestine section.