The present invention relates to a medical apparatus, methods and system for fluid medication delivery. The apparatus has a drive mechanism module and a fluid container engaged to the drive mechanism. The drive mechanism includes a resilient member compressed to act against a gasket movably disposed in the fluid container. When extending to its original shape, the resilient member pushes the gasket to move inside the fluid container to eject the fluid out of the fluid container. The fluid container is connected to a flow restrictor tube that allows a predetermined flow rate of medication to be infused or injected to a patient.
