Apparatus, Systems and Methods for An Infusion Pump Assembly

A medical infusion device for delivering an infusible medical fluid comprising:

• a pump having a minimum and maximum pulse volume;
• a controller configured to:
• determine a first volume of infusible medical fluid delivered;
• and
• based on the first volume of infusible medical fluid delivered, determine a time and volume for delivery of a second volume of infusible fluid.

A controller for a medical infusion device for delivering a medical fluid comprising:

• a volume sensor assembly for determining a first volume of infusible fluid delivered;
• a processor for determining the difference between a desired first volume of infusible fluid to be delivered and the actual first volume of infusible fluid delivered;
• and
• a processor for determining a schedule and volume for delivering a second volume of infusible fluid based on the difference.