Drainage device for hydrops and pneumatosis in human body cavity

The invention discloses a drainage device for hydrops and pneumatosis in a human body cavity. The drainage device is characterized by comprising a shell, a drainage hole, a drainage pipe, an gas bag,a filter screen, a gas discharge hole and a liquid discharging hole, wherein the shell is used for being attached to the skin on the outer side of the human body cavity; the drainage hole is used forleading the hydrops and the pneumatosis in the human body cavity out; the drainage pipe is used for being inserted into the human body cavity and leading the hydrops and the pneumatosis in the human body cavity into the drainage hole; the gas bag is used for conveying the pneumatosis output from the drainage hole; the filter screen is used for filtering the pneumatosis output by the gas bag; the gas discharge hole is used for discharging the pneumatosis filtered by the filter screen; the liquid discharging hole is used for discharging the pneumatosis output through the drainage hole. An innercavity is formed in the she