The invention relates to the technical field of medical accessories, in particular to a chest drainage tube which comprises a spine end and a drainage tube body, and a plurality of drainage holes are formed in the spine end; the spine end is internally provided with at least one telescopic puncture part, and the puncture part is used for
puncturing a
fiber layer at the
effusion position of the
lung, so that the
effusion position forms a whole, and the
effusion of the
lung can be conveniently led out; an air bag section is arranged on the outer wall of the end, close to the spine end, of the drainage tube, and an air bag is arranged on the outer wall face of the air bag section. According to the drainage tube, the telescopic puncture part is arranged in the spine end, the flexible puncture knife is driven by air pressure to stretch out along an arc-shaped track,
fiber separation of an effusion area can be accurately punctured, the drainage tube can be made straight after the air bag is inflated, and the drainage tube can be made straight after the air bag is inflated. Isolated effusion cavities are communicated to form an integral cavity gap, one-time thorough drainage is achieved, the position of the
catheter is prevented from being repeatedly adjusted, and effusion discharging efficiency is remarkably improved.