Problem: the structure is simple and the size is small, and the infusion of the medicine can be stably carried out regardless of the installation height of the infusion container or the blood pack, and there is no failure to avoid the overload of the machine, and the nursing power is reduced by the remote control, and it is This paper provides a cylinder pump capable of reducing environmental pollution and attached tubes harmful to human body. Solution: the upper part k in which the upper rotary member is rotatably inserted into the inside with respect to the cylinder pump that can be stably and stably injected regardless of the installation height of the infusion container or the blood pack The outer casing of the upper casing and the lower peripheral portion of the upper rotary member, which are coupled to the upper casing and are rotatably inserted into the lower rotary member to be slidably rotated in contact with the upper rotary member The upper surface of the upper surface of the lower casing and the upper peripheral surface of the rotary member are single tubular cylinders, and the upper rotary memberThe lower rotary member is provided with a plunger for rotating the cylinder within the cylinder while the cross-section of the cylinder is cut off, and the cylinder is provided with an inflow pipe into which the chemical liquid is flown and an outflow pipe in which the chemical liquid flows out A central angle with respect to the center of rotation of the inflow pipe and the outflow pipe is protruded from the outer peripheral surface of the casing and the lower casing, and is arranged such that the center angle of the inlet and the outlet of the lower casing is one or more times or less than twice the center angle (. Theta.) of one plunger, and the upper rotary member and the lower part of the upper rotary member The rolling member is coupled to a driving device and rotated independently. Diagram【課題】 構造が簡単で大きさが小さく、輸液容器または血液パックの設置高さにかかわらず安定的に薬液注入が可能であり、機械の過負荷がか
