Dispensing fluid from an infusion pump system

摘要

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.

主权项

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 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-elongation mechanism disposed on at least a plurality of the pushrod segments to maintain the leading face of one pushrod segment in abutting relationship with a trailing face of an adjacent pushrod segment when a portion of the pushrod is adjusted to the generally noncurved shape.