Dispensing fluid from an infusion pump system
AssigneeBigfoot Biomedical, Inc.
InventorsJames Causey, Todd Kirschen, Mitchell Wenger, Steven Friedman, Joshua Colton, Keld Sloth Christensen
Life of this patent
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Abstract
Some embodiments of a medical infusion pump system include a pump device having a cap device that mates with a pump housing to retain a medicine cartridge therein. In addition to retaining the medicine cartridge in the pump housing, the cap device may perform a number of preparatory functions or safety functions. In addition or in the alternative, some embodiments of the pump device may include a drive system that advances a piston rod to dispense medicine to the patient in a safe and energy efficient manner.
Claims17
An infusion pump device, comprising:
- a pump housing that defines a space to receive a medicine;
- a drive system to dispense a medicine from the pump housing when the medicine is received in the space, the drive system comprising:
- a ratchet mechanism that advances a piston rod during a drive step to dispense the medicine when the medicine is received in the space;
- and
- an electrically powered actuator that decouples from the ratchet mechanism during the drive step.
Dependencies are inferred from the claim text.