In-vitro intestinal obstruction catheter retracting and releasing device

The utility model belongs to the technical field of medical instruments, and particularly relates to an in-vitro intestinal obstruction catheter retracting and releasing device which comprises a fixed box body, a rotary box, a wire fixing mechanism, a catheter, a multi-channel connecting piece, a rear balloon, a front balloon and a front end part, when the in-vitro indwelling catheter winding device is used, the two clamping blocks are separated from clamping and fixing a catheter by screwing the two threaded rotating rods symmetrically arranged on the fixed box body outwards and pulling the two clamping blocks outwards, so that the winding position of the fixed box body on the catheter can be adjusted according to the length of the in-vitro indwelling catheter; when the external catheter needs to be collected and released, the rotating box movably connected to the fixed box body is rotated, the external catheter is collected into the fixed box body under the rotation of the rotating box, and the aim of colle