1. The balloon is made of high pressure-resistant materials to ensure safe expansion;
2. One specification only corresponds to one diameter, diameter size;
3. The balloon is folded by three wings, which can easily pass through the 2.8mm biopsy hole and expand under the direct vision of the endoscope, which is safe and convenient;
4. The balloon segment is equipped with a developing mark, which is clearly visible under X-ray;
5. With the guide wire specification: 0.035;
6, configure various specifications.
