Hemodialyzer fixing device

The utility model is suitable for the technical field of medical instruments, and provides a hemodialyzer fixing device which comprises a base, a supporting column, a ball screw, a driving motor, a sliding ring, a rotating ring, a connecting frame, a fixing base, a first limiting plate and a second limiting plate. A ball screw driven by a driving motor is rotationally mounted in the mounting groove, meanwhile, a sliding block is in threaded connection with the ball screw, a sliding ring can be driven by the sliding block to slide on a supporting column, a rotating ring is rotationally mounted on the outer wall of the sliding ring, then the position of a ventilation device pipeline is adjusted, the degree of freedom is high, and the device can be used at various positions; wherein a connecting frame is rotationally installed on the rotating ring, meanwhile, a fixing base is rotationally installed at the lower end of the connecting frame, the fixing base clamps a pipeline through a first limiting plate and a se