Collection bag and negative pressure drainage device

The utility model provides a collecting bag and a negative pressure drainage device, and belongs to the field of medical supplies. The collecting bag comprises a bag body and a bag mouth; the bag bodyis a transparent bag, and the upper end of the bag body is communicated with the bag mouth; a self-sealing strip is arranged at the upper part of the inner wall of the bag body; the bag mouth is of an elastic cylinder structure. By means of the negative pressure drainage device, it can be guaranteed that liquid in the negative pressure drainage device is discharged in a sealed environment, and pollution to the surrounding environment is avoided. 本实用新型提供了一种收集袋及负压引流装置，属于医疗用品领域。所述收集袋包括袋体和袋嘴；所述袋体为透明袋，其上端与所述袋嘴连通；在所述袋体的内壁的上部设置有自封条；所述袋嘴为弹性圆柱体结构。利用本实用新型能够保证在密封的环境下排出负压引流器中的液体，避免了对周围环境的污染。