Double-cavity double-air-bag secure catheter

The utility model discloses a double-cavity double-air-bag secure catheter which is formed by an air bag cavity, a urethral catheterization cavity, rubber seal valves, balloons and a catheter body. The balloon I and the balloon II are sequentially and adjacently arranged at the front end of the catheter body in the direction from the terminal of the air bag cavity to the mouth of the air bag cavity. The double-cavity double-air-bag secure catheter can be well fixed into a urinary bladder, and urethral injuries can be effectively reduced when the catheter is pulled out under the action of external force. Furthermore, scales are designed on the catheter body, conveniences and accuracy of operation of doctors are greatly improved, and discomfort and urethral injuries caused by the fact that the insertion length of the catheter is inappropriate to patients are reduced.