Severe illness postoperative care drainage apparatus

The utility model discloses a serious illness postoperative care drainage device which comprises a drainage cylinder, an inner cylinder is arranged in the drainage cylinder, connecting pipes are connected to the outer side of the drainage cylinder and the outer side of the inner cylinder, a first piston is arranged on the outer side of the inner cylinder, a second piston is arranged in the inner cylinder, two first push rods are fixed to the outer side of the first piston, and two second push rods are fixed to the outer side of the second piston. A first round block is fixed to the outer side of the first push rod, a second push rod is fixed to the outer side of the second piston, a second round block is fixed to the outer side of the second push rod, and a penetrating hole is formed in the center of the first round block. According to the drainage device, the drainage device composed of the drainage cylinder and the inner cylinder is ingeniously designed, so that cleaning liquid and drained liquid are conven