Elephant trunk bracket expansion shaper

The invention provides an elephant trunk bracket expansion shaper. The elephant trunk bracket expansion shaper includes a hard catheter and a columnar water capsule located on the surface of the distal end of the hard catheter, the proximal end of the hard catheter is a hollow pipe, the distal end of the hard catheter is of a solid structure, the distal end of the hollow pipe is provided with a hollow pipe opening, the hollow pipe opening is directly formed in a cavity of the columnar water capsule, the proximal end of the hollow pipe is in threaded connection with a hollow pipe connector, the hollow pipe connector is in sealed connection with a water injection pipe, and the middle section of the water injection pipe is fixedly provided with a pressure monitor. The shaper is simple in structure and convenient to use, by injecting water in the columnar water capsule, normal expansion of an elephant trunk bracket and bracket shaping in line with dissection are thus ensured, the safety of operation is improved a