A drainage tube unit for aspirating body fluids by means of a suction pump comprises a drainage tube (10) for aspirating the body fluids and at lease one service tube (11), each of them with a patient-side end and a tube (10) and of the service (11) being arranged in a common patient-side attachment part (3), and the pump-side ends of the drainage tube (10) and of the service tube (11) being arranged in a common pump-side 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-side in to a drainage channel attachment part (3), and the pump-side ends opening of the pump-side attachment part (2). The drainage tube unit according to the invention is inexpensive to produce and is easy and safe to use.一個用於藉由吸入泵來吸出身體流體的排水管組件,其包含一個用於吸出身體流體的排水管(10)以及至少一個服務管(11),該等管每個都具有一個病人側端部和一個泵側端部,該排水管(10)和服務管(11)的病人側端部係配置在一個共同的病人側接附部件(3)中,且該排水管(10)和服務管(11)的泵側端部則被配置在一個共同的泵側接附部件(2)中。該排水管(10)的端部係與該服務管(11)的端部分開而延伸,該病人側端部係通向病人側接附部件(3)的排水通道(37)和服務通道(35)中,且泵側端部則通向泵側接附部件(2)之排水通道(24)和服務通道(25)中。根據本發明的排水管組件可以不昂貴地製造,且使用容易且安全。