Liquid nitrogen taking device for treating verruca plantaris

The utility model discloses a liquid nitrogen taking device for treating verruca plantaris, which relates to the technical field of medical treatment, and comprises a sealing plug, a rubber head, an injection tube, a pull rod, a liquid inlet tube, a first liquid discharge tube, a liquid distribution tube, a second liquid discharge tube, a piston, a liquid storage tank, a screw rod, a graduated scale and an observation tube, and the position of the piston can be calibrated according to the graduated scale by rotating the screw rod and adjusting the position of the piston. The amount of liquid nitrogen needing to be obtained is preset in the liquid storage tank, during liquid feeding, liquid feeding is conducted through a liquid feeding pipe, during liquid discharging, liquid nitrogen is input into the liquid storage tank through a liquid distribution pipe, when the liquid nitrogen in the liquid storage tank reaches the needed amount, the liquid nitrogen overflows through an observation pipe, and in the pumping