Dual-purpose disposable thoracic closed drainage device capable of being used in peace and war time

The utility model belongs to the field of medical equipment, which relates to a closed type drainage device for chests. The utility model is composed of a puncture needle, a drainage pipe and a drainage bag, wherein the puncture needle is connected to the front end of the drainage pipe and the back end of the drainage pipe is directly connected with the drainage bag. The middle of the drainage pipe is provided with a one-way valve which is opened towards to the drainage bag. The condition that gas and liquid flow to the drainage bag can be ensured. The utility model has the advantages of simple structure, easy use, safety, etc. The drainage of chest effusion and chest pneumatosis can be effectively carried out. The condition that waste liquid and waste gas in the drainage bag flow inversely can be prevented. The utility model can be used for the salvage treatment of patients who suffer from chest hemothorax, chest effusion and chest pneumatosis in wartime.