Operation sheath catheter for preservation of gallbladder and removal of calculus

The utility model relates to the technical field of medical auxiliary devices, in particular to an operation sheath catheter for preservation of gallbladder and removal of calculus. The operation sheath catheter comprises a sheath catheter body and a sheath core nested into the sheath catheter, wherein scales and scale values are formed in the outer side wall of the sheath catheter body; the scales comprise long scales and short scales, four short scales are formed between two adjacent long scales, the distance between two adjacent long scales is 0.5 cm, the distance between the two adjacent short scales is 0.1 cm, each scale value is formed in one side of one corresponding long scale, and one scale value is formed at an interval of two long scales from the front end of the sheath catheter body. The operation sheath catheter is simple in structure, economical and practical, can always keep a gallbladder operation channel open, reduces complication of injury of gallbladder and a gallbladder mucous membrane and the like, shortens the operation time, can timely wash a gallbladder cavity with water and facilitates exposure of operation view of a surgeon.