Single J-shaped air sac catheterization stent tube

The utility model discloses a single J-shaped air sac catheterization stent tube, which is formed by connecting a single J-shaped catheter and an air sac catheter, wherein the air sac catheter is a double-cavity catheter; one cavity of the air sac catheter is an air sac catheter cavity, and the other cavity is a catheter cavity; the middle section of the stent tube is provided with an air sac cavity; and the tube wall of the stent tube is provided with side holes. In the single J-shaped air sac catheterization stent tube, a single J-shaped side is naturally bent into a ring in a renal pelvic cavity, so that the catheter is prevented from falling; and a plurality of side holes are formed between a single J-shaped tube end and the air sac cavity, so that urea is convenient to drain, and crystals or blood clots in urea are prevented from blocking the stent tube. After water is injected into the air sac cavity, the stent tube is fixed under the tissue layer of a cutaneous fistulas, so that urea is prevented from