INFUSION DEVICE

摘要

The present invention relates to an injection device, and more specifically, to an injection device which maintains a constant injection rate. The present invention provides an injection device comprising: a fluid supply unit (110) including an elastic membrane (117) which surrounds a storage space in which fluid is stored, and is capable of expanding in proportion to the amount of the fluid stored therein; an extension hose (119) connecting the fluid supply unit (110) to the storage space; and a discharge amount control unit (150) which controls the amount of fluid being discharged through the extension hose. The discharge amount control unit controls the amount of the fluid to be discharged according to the degree of expansion of the elastic membrane.