Soft tissue curettage device capable of realizing soft tissue flap expansion, and use method and application of soft tissue curettage device

The invention relates to the technical field of soft tissue valve expansion, and particularly discloses a soft tissue scaler capable of achieving soft tissue valve expansion, the soft tissue scaler comprises a scaler plate, a fixing assembly, an expansion assembly and an air bag assembly, the fixing assembly comprises a fixing frame and a fixing plate arranged in the fixing frame; the expansion assembly comprises an expansion piece and a movable piece which are arranged on the scraping plate, a rolling wheel connected to the fixed plate and movable rails arranged on the two sides of the movable piece. The soft tissue valve expanding device is simple in structure and convenient to use, soft tissue valve expanding of different degrees can be achieved according to specific conditions, compact collagenous fibers in periosteum can be rearranged to be in a loose state through repeated scraping treatment actions, then the periosteum elasticity is reduced, the soft tissue valve expanding effect is achieved, and the a