Low-temperature casing pressure device for taking out covered stent

The invention discloses a low-temperature casing pressure device for taking out a covered stent, which comprises a traction mechanism for pulling a covered roll with the covered stent to advance, a compression mechanism for radial compression, a liquid nitrogen mechanism for enabling the covered roll with the covered stent to generate low temperature, a shell and a control panel, wherein the traction mechanism, the compression mechanism and the liquid nitrogen mechanism are all arranged in the machine shell, the compression mechanism comprises a compression motor, a worm gear, a worm and a radial compression plate, the compression motor drives the worm to rotate, the worm drives the worm gear to rotate, and the worm gear drives the radial compression plate to move in the radial direction. By arranging the traction mechanism, the compression mechanism, the liquid nitrogen mechanism, the machine shell and the control panel, the film covering roller of the film covering support is separated from the film covering support after being cooled and shrunk, the film covering support is taken down from the film covering roller under the action of the compression mechanism, labor is saved, and the production efficiency is improved.