Patent ID: 8795233

Claim:
A pump system for dispensing insulin, comprising: (a) a disposable pump device, comprising: a wearable pump housing that defines a space to receive an insulin container having a perforatable dispensing end; a transparent window arranged on the wearable pump housing to view the insulin container when the insulin container is inserted in the wearable pump housing; a piston rod movably arranged in the wearable pump housing to dispense the insulin from the insulin container when the insulin container is inserted in the wearable pump housing, the piston rod comprising threads on an outer surface portion; a drive system to advance the piston rod toward the perforatable dispensing end of the insulin container when the insulin container is received in the pump housing, wherein the drive system comprises a toothed wheel, a pawl arranged to engage at least one tooth of the toothed wheel, a spring device for moving the pawl to rotate the toothed wheel, and a battery-powered actuator for creating a spring effect in the spring device, wherein the threads on the outer surface portion of the piston rod mesh with interior threads along an interior circumferential surface of the drive system; and a battery to supply electrical power for operation of the battery-powered actuator, the battery being positioned inside the wearable pump housing, wherein the entire pump device is disposable and non-reusable; and (b) a controller device that communicates signals to the disposable pump device, the controller device having buttons and a display.