Infusion Pump With Closed Loop Control and Algorithm
First Claim
1. A method of controlling fluid delivery from an infusion pump having a non-mechanically-driven moveable partition, comprising:
- delivering at least one fluid shot amount from the infusion pump;
determining at least one measured amount for the at least one fluid shot amount;
calculating an average measured amount using the at least one measured amount;
calculating a correction factor using the average measured amount and an expected amount; and
adjusting subsequent fluid delivery from the infusion pump based at least in part on the correction factor.
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Accused Products
Abstract
Systems and methods of controlling the flow of fluid from infusion pumps, such as pumps utilizing an electrokinetic engine, are discussed. In particular, a closed loop control technique can be utilized to regulate movement of a non-mechanically-driven moveable partition, which can be used to drive the flow of an infusion fluid. For example, one or more fluid shot amounts can be delivered by the infusion pump. One or more measured amounts can be determined for the fluid shot amount(s). An average measured amount can be calculated from the measured amounts, and a correction factor can be calculated using the average measured amount and an expected shot amount. Subsequently, a fluid shot amount can be delivered base upon the correction factor. Variations of this method, and systems for implementing the method, or portions thereof, are also discussed.
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Citations
27 Claims
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1. A method of controlling fluid delivery from an infusion pump having a non-mechanically-driven moveable partition, comprising:
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delivering at least one fluid shot amount from the infusion pump;
determining at least one measured amount for the at least one fluid shot amount;
calculating an average measured amount using the at least one measured amount;
calculating a correction factor using the average measured amount and an expected amount; and
adjusting subsequent fluid delivery from the infusion pump based at least in part on the correction factor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system for controlling fluid flow from an infusion pump having a non-mechanically-driven moveable partition, comprising:
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a position detector coupled to the movable partition for driving fluid from the infusion pump, the position detector configured to emit a signal that identifies the position of the movable partition; and
a controller coupled to the position detector and the movable partition, the controller configured to control delivery of fluid from the infusion pump based at least in part upon an expected amount and an average measured amount calculated from at least one previously measured amount. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification