Perfusion drainage catheter

The utility model discloses a perfusion drainage catheter which comprises a catheter body, and a medicine feeding cavity and a blood flow cavity are formed in the catheter body. The connecting piece comprises a catheter seat and a double-cavity tube for connecting the catheter seat and the catheter; the blood flow cavity is located in the center of the catheter, and the medicine feeding cavities are distributed on the outer side of the blood flow cavity. The catheter is provided with a plurality of groups of dosing holes arranged in the circumferential direction, the dosing holes in each group are distributed in the catheter in the axial direction, the dosing holes are communicated with the dosing cavity, and the catheter is further provided with a plurality of drainage holes communicated with the blood flow cavity; the blood flow cavity and the drainage hole are formed in the catheter, so that when thrombolysis medicine is poured into a blood vessel, the situation that the blood vessel is blocked can be avoi