The utility model discloses an
infusion pump, including shell, guide bush
assembly, elastic
liquid storage sac and push rod, and shell is the container with opening, guide bush
assembly includes guide sleeve body part and guide bush
top cap part, and guide bush
top cap part sets up at the opening of shell, and guide sleeve body part is placed in the inside of shell, the injection hole and output hole that are all with the inner chamber communication of guide sleeve body part are seted up on guide bush
top cap part, push rod main part is movably arranged in the inner chamber of guide sleeve body part and is in clearance fit with the inner wall of guide sleeve body part, and the elastic
liquid storage sac main part is sleeved in the outside of guide sleeve body part, and the lower end of elastic
liquid storage sac is fixed and sealedly connected with the lower end of push rod, and the upper end is fixed and sealedly connected with the upper outer circle of guide sleeve body part, the
infusion pump provided by the utility model is provided with injection hole and output hole, therefore, injection and infusion do not interfere with each other, can carry out simultaneously, and it is convenient to add
medicine, and use is more convenient.