Dispensing fluid from an infusion pump system
First Claim
Patent Images
1. An infusion pump system for the delivery of medication, comprising:
- a pump housing defining a space to receive a medicine for dispensation; and
a drive system to dispense medicine when the medicine is received by the pump housing, the drive system including a pushrod that is movable to apply a dispensing force to dispense medicine,the pushrod including rod segments, each rod segment being interconnected to the next rod segment by a hinge portion so that at least a portion of the pushrod is adjustable from a curved shape to a generally noncurved shape,the pushrod including an anti-rotation mechanism to oppose rotation of the pushrod about a longitudinal axis of the pushrod, andthe pushrod including an anti-torsion mechanism to oppose torsion of one rod segment relative to another rod segment.
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Abstract
Some embodiments of a medical infusion pump system include a pump device having a flexible pushrod that can adjust from a curved configuration to a generally straight configuration. The flexible pushrod is part of a drive system of the pump device so that the flexible pushrod can be controllably and incrementally advanced toward a medicine reservoir to incrementally dispense the medicine therein. In particular embodiments, the flexible pushrod may comprise an anti-rotation mechanism, an anti-torsion mechanism, or a combination thereof.
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Citations
51 Claims
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1. An infusion pump system for the delivery of medication, comprising:
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a pump housing defining a space to receive a medicine for dispensation; and a drive system to dispense medicine when the medicine is received by the pump housing, the drive system including a pushrod that is movable to apply a dispensing force to dispense medicine, the pushrod including rod segments, each rod segment being interconnected to the next rod segment by a hinge portion so that at least a portion of the pushrod is adjustable from a curved shape to a generally noncurved shape, the pushrod including an anti-rotation mechanism to oppose rotation of the pushrod about a longitudinal axis of the pushrod, and the pushrod including an anti-torsion mechanism to oppose torsion of one rod segment relative to another rod segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An infusion pump system for the delivery of medication, comprising:
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a pump housing defining a space to receive a medicine for dispensation; and a drive system to dispense medicine when the medicine is received by the pump housing, the drive system including a pushrod that is movable to apply a dispensing force to dispense medicine, the pushrod including rod segments that are hingedly engaged to one another such that at least a portion of the pushrod is adjustable from a curved shape to a generally noncurved shape, the pushrod including an anti-torsion mechanism to oppose torsion of one rod segment relative to an adjacent rod segment, the anti-torsion mechanism including an extended member protruding from the one rod segment that is engageable with a cavity disposed in the adjacent rod segment. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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Specification