a programmable pump with three separate components : a driver , a reservoir and a tubing set connector . the driver provides an electromechanical assembly causing fluid to flow from the reservoir . the driver can be programmed for varying flow rates and alternating on / off delivery cycles through the control of switches externalized on the driver face . the reservoir is designed as a separate component . the driven side of the reservoir is the bottom . the top of the reservoir includes a port , and the bottom includes a septum for filling by a needle . the tubing set connector subsequently mounts into the port connector of the reservoir . the tubing set connector provides the interface to any standard luer - type tubing set which then connects to a needle for infusion . the circuitry is hardware logic programmable circuitry .