PROBLEM TO BE SOLVED: To provide a simple, inexpensive, single-use only medicament pump system.SOLUTION: Provided is a hydraulically actuated fluid delivery system for sustained delivery of a liquid component, comprising: a pump chamber； a fluid storage chamber having an orifice and being fluidly connected to the pump chamber by a moveable barrier； a hydraulic fluid reservoir for storing a high viscosity fluid, the reservoir being connected to the pump chamber via a restrictor capable of controlling the rate of flow of the high viscosity fluid； and an actuator functionally connected to the hydraulic fluid reservoir to cause the hydraulic fluid to flow into the pump chamber through the restrictor, thereby expanding the volume of the pump chamber, displacing the moveable barrier and causing a quantity of the liquid component stored in the fluid storage chamber to be delivered at a sustained rate.SELECTED DRAWING: Figure 2
