Thrombus extraction device capable of realizing thrombus extraction in pulmonary artery branch

A thrombus extraction device capable of achieving thrombus extraction in a pulmonary artery branch comprises a thrombus suction catheter and a thrombus dragging catheter. The front end of the thrombus suction catheter is provided with a front port, and the rear end of the thrombus suction catheter is provided with a thrombus suction port, an operation port A and an operation port B; a wire guide opening A and a liquid injection opening are formed in the rear end of the suppository dragging catheter, and a wire guide opening B and an annular water bag are arranged at the front end of the suppository dragging catheter; the thrombus dragging catheter is movably inserted into the catheter cavity of the thrombus sucking catheter, the rear end of the thrombus dragging catheter extends out of the thrombus sucking catheter through the operation opening B, and the front end of the thrombus dragging catheter extends out of the thrombus sucking catheter through the front end opening. The thrombus extraction catheter has