Extrusion device for drainage tube and extrusion method thereof

The invention discloses an extrusion device for a drainage tube. The extrusion device comprises two extruders arranged on the drainage tube. The two extruders are arranged in a spaced mode. The extruder far from a human body is used for making the drainage tube switch between a blocked state and a smooth state. The extruder close to the human body is used for extruding the drainage tube to prevent the situation that blood clots are formed and block the drainage tube. Each extruder comprises a body in the shape of pliers, wherein the body comprises two clamping arms, a fixed arm and an extrusion arm, a motor is arranged beside the extrusion arm, the output end of the motor is hinged to the extrusion arm through a crank-link mechanism, the crank-link mechanism is used for pushing the extrusion arm to conduct reciprocating motion relative to the fixed arm so as to drive the clamping arms to be closed or separated, and the motor is fixedly connected with the fixed arm through a connecting rod. The invention further discloses an extrusion method of the extrusion device for the drainage tube. According to the extrusion device and the extrusion method, the problems that in the prior art, by the adoption of the mode that the drainage tube is pinched or extruded manually to prevent a pipe orifice from being blocked, time and labor are wasted, and the extrusion strength can not be controlled are solved.