1. Balloon has the functions of mechanical barrier, stent, drainage and expansion, with the advantage of reducing the possibility of re-adhesion. The bracket is only for supporting.
2. After the operation of intrauterine adhesions, there will be blood vessel bleeding on the surgical wound. Balloon compression can stop bleeding, and the bleeding can be flexibly controlled by adjusting the water volume in the balloon to avoid excessive compression and necrosis of endometrium. The stent is not easy to control the bleeding volume, so the balloon is good.