An intestinal irrigation device that includes a waste collection bag and a rectal catheter. The rectal catheter has a first end for coupling with the waste collection bag and a free end for insertion into the rectum, while the waste collection bag has a first wall circumferentially united with an opposing second wall and an inlet opening for irrigated waste. The inlet opening has a first coupling part for coupling the rectal catheter into fluid communication with the bag, and the bag has a second coupling part inside it for mating the first coupling part. The device provides a time saving alternative to known devices, and no odor emissions and unpleasant smell is recognized during the irrigation procedure.