Fistulization opening expansion device

The utility model provides a fistulization opening dilation device (10) which comprises a fistulization tube, a tube body (11) of the fistulization tube is a flexible hollow round tube, a dilation air bag layer (12) which is isolated from the inside of the tube and can be inflated and dilated is integrally arranged on the fistulization tube and tightly attached to the outside of the tube body, and a first air-entrapping side tube (13) communicated with the inside of the dilation air bag layer is arranged on the outer wall of the dilation air bag layer. The fistulization opening expansion device (10) further comprises a first plug (14) capable of covering the first air-entrapping side pipe (13) and a handheld negative pressure ball (15) capable of being communicated with the first air-entrapping side pipe (13). 本实用新型提供一种造瘘口扩张装置(10)，包括造瘘管，造瘘管的管体(11)是一根柔性中空的圆管，在所述造瘘管上，紧贴管体外一体设有与管内隔绝的可充气扩张的扩张气囊层(12)，所述扩张气囊层外壁设有一个连通扩张气囊层内部的第一加气侧管(13)；所述造瘘口扩张装置(10)还包括可盖在第一加气侧管(13)上的第一堵头(14)和可连通在第一加气侧管(13)上的一个手持式负压球(15)。