Aspirator for assisting robot surgical operation

The aspirator for assisting the robot surgical operation comprises a negative pressure aspirator and an anti-backflow assembly, a containing cup is arranged on the left side of the negative pressure aspirator, and the anti-backflow assembly used for preventing operation hydrops from flowing back is arranged above the containing cup. The anti-backflow assembly comprises a mounting sleeve, a trapezoidal block, a mounting block, a ventilation opening, a limiting block, a connecting rod, a telescopic spring and a movable block, the trapezoidal block is arranged on the inner wall of the mounting sleeve, the mounting block is arranged in the trapezoidal block, the ventilation opening is formed in the mounting block in a penetrating mode, and the connecting rod is arranged in the middle of the mounting block. One end of the connecting rod is connected with a limiting block. According to the aspirator for assisting the surgical operation of the robot, through the anti-backflow assembly, the situation that the adsorpt