A device for draining the abdominal cavity is suggested consisting of a system of 4-5 tubes with openings in the sides. The tubes of the system are joined to form a loosely coiled braid with a large coil pitch, while the axes of the side openings in the tubes are arranged on the helicoidal line with a pitch differing from that of the braid. This design of the device makes it possible to avoid obstruction of the side openings of the drain by the mobile organs and tissues of the abdominal cavity, which considerably raises the efficacy of draining in vacuum aspiration. The device is simple in design and may be easily constructed using 4-5 ordinary drainage tubes. The device was used successfully in 6 patients for abdominal drainage after resection of the liver for focal lesions.