Sliding core fluid delivery device
First Claim
Patent Images
1. 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.
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Abstract
A pump for the delivery of a fluid includes a core, a restrictor, and an expandable bladder. The core is configured to extend longitudinally along an axis of the pump. The restrictor is configured to limit the longitudinal extension of the core to a predetermined maximum length. The expandable bladder is attached to the support core in at least one position and configured to receive a fluid.
4 Citations
17 Claims
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1. A pump for delivery of a fluid, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for the delivery of a fluid from a pump, comprising:
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receiving fluid into a bladder through a filling port, including extending a support core including a first sliding core member and a second sliding core member configured to move relative to each other longitudinally to extend the support core along an axis of the pump, the first sliding core member coupled to the filling port and the second sliding core member coupled to the output port, 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 expanding the bladder, the extension of the support core limited to a predetermined maximum length by a restrictor; and delivering fluid from the pump through the output port, including contracting the bladder, and retracting the support core along the longitudinal axis of the pump. - View Dependent Claims (14, 15, 16, 17)
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Specification