Auxiliary equipment for taking bile duct calculi from gallbladder duct

The auxiliary device comprises a longitudinal extending body with a near end and a far end and an expansion body connected with the far end of the longitudinal extending body, the cross section of the expansion body is enlarged in the first longitudinal direction, an open groove is formed in the expansion body, and the open groove is communicated with the near end of the longitudinal extending body. Wherein the first longitudinal direction is opposite to the direction in which the auxiliary device enters the target receptor. On the basis of the auxiliary equipment for taking the bile duct calculi from the gallbladder duct, a bile duct incision method is used for replacing a bile duct incision method, specifically, the auxiliary equipment is placed along the gallbladder duct after the gallbladder is cut off, and the gallbladder duct is cut through a cutter placed in an open groove, so that the gallbladder calculi are taken out from the gallbladder duct. The gall bladder tube with the small diameter is expanded