Dispensing Fluid from an Infusion Pump System
First Claim
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1. An infusion pump system for the delivery of medication, including:
- a pump housing defining a space to receive a medication; 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,wherein each of the hinge portions comprises a flexible wire that extends from a leading face of one rod segment to a trailing face of an adjacent 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
15 Claims
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1. An infusion pump system for the delivery of medication, including:
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a pump housing defining a space to receive a medication; 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, wherein each of the hinge portions comprises a flexible wire that extends from a leading face of one rod segment to a trailing face of an adjacent rod segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An infusion pump system for the delivery of medication, comprising:
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a pump housing defining a space to receive a medication cartridge; 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 mechanically assembled rod segments, each rod segment including a hinge protrusion that pivotably engages a hinge receiver cavity of the next rod segment in the row by a hinge assembly so that at least a portion of the pushrod is adjustable from a curved shape to a generally noncurved shape. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification