Micro injection pump is a kind of constant volume type infusion pump, the utility model has the advantages of high timing precision, stable flow velocity and liquid consumption, especially suitable for the infusion of sodium nitroprusside, dopamine and antibiotics such as acute drug. You can use the company designated ( or user selected ) 20ml or 50ml two specifications of disposable syringe. Once the syringe is clamped to the pump, the pump will automatically identify the clip injector specifications, in addition the pump but also a variety of alarm function, in order to ensure transfusion safety reliably.