Balloon catheter used for nasosinusitis treatment

The utility model discloses a balloon catheter used for nasosinusitis treatment. The balloon catheter comprises an inner pipe and an outer pipe, two ends of the inner pipe are provided with a guide bar inlet and a guide bar outlet respectively, one end of the outer pipe close to the guide bar outlet is provided with a balloon, one end of the outer pipe close to the guide bar inlet is provided with a pressurizing port, the balloon is communicated with the pressurizing port through the outer pipe, the guide bar outlet is made of soft plastics, a bevel transition portion is arranged between the guide bar outlet and the balloon and is inclined upwards to the balloon from the guide bar outlet. In the balloon catheter, the guide bar outlet is made of soft plastics, and hurt to the tissue of the nasal cavity can be avoided when the balloon catheter is inserted into the a paranasal sinus channel; on the other hand, the bevel transition portion is arranged between the guide bar outlet and the balloon; after the front end of the balloon catheter enters the nasal cavity, the balloon can smoothly transit into the wound of the nasal cavity, irritation and damage to the nasal cavity are further alleviated and use is safer.