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 Abstract£ºInfusion pump in medical clinic has a wide range of applications. Based on the application of Chinese hospital infusion pump, it has diaphragm pumps and non-diaphragm pump. Diaphragm type because of itsgreat advantages in sterile hypodermic, gradually become the mainstream. The infusion pump-diaphragm has been extensive research on the basis to small size, high accuracy, degree of aseptic widely design goals, the scope of strictly, using optimal design method, selection of magnetic drive mode as the power source, diaphragm pump, diaphragm check valves for technical support, designed to be a new type of infusion pumps.