A drainage tube unit for aspirating body fluids bymeans of a suction pump comprises a drainage tube (10)for aspirating the body fluids and at least one servicetube (11), each of them with a patient-side end and apump-side end, the patient-side ends of the drainagetube (10) and of the service tube (11) being arrangedin a common patient-side attachment part (3), and thepump-side ends of the drainage tube (10) and of theservice tube (11) being arranged in a common pump-sideattachment part (2). The ends of the drainage tube (10)extend separate from the ends of the service tube (11),the patient-side ends opening into a drainage channel(37) and a service channel (35) of the patient-sideattachment part (3), and the pump-side ends openinginto a drainage channel (24) and a service channel (25)of the pump-side attachment part (2). The drainage tubeunit according to the invention is inexpensive toproduce and is easy and safe to use.
