Patent ID: 8523815

Claim:
A pump for delivery of a fluid, comprising: a support core including a first sliding core member and a second sliding core member configured to move relative to each other to longitudinally extend the support core along an axis of the pump; an expandable bladder, having an inside, the expandable bladder attached to the support core in at least one position and configured to receive a fluid; a filling port coupled to the first sliding core member and an output port coupled to the second sliding core member, the first sliding core member including a first flow path extending from the filling port to the inside of the expandable bladder and the second sliding core member including a second flow path extending from the inside of the expandable bladder to the output port, wherein the first flow path and the second flow path are separate and distinct from one another; and a restrictor configured to limit the longitudinal extension of the support core to a predetermined maximum length.