Patent ID: 9327073
Filing Date: 2016-05-03
CPC Classification: A61M

Claim Text:
1. An infusion pump for infusing fluid from a reservoir into a body of a user, the infusion pump comprising: a housing; a drive mechanism including a motor and one or more drive components contained within the housing and operatively coupled to the reservoir to deliver fluid from the reservoir through a fluid path into the body of the user; one or more electronic components to take a series of measurements of a parameter associated with the motor or one of the drive train components; and a controller contained within the housing, wherein the controller filters the series of measurements to remove at least one measurement from the series of measurements, calculates a weighted average of the remaining measurements in the series of measurements by applying a weighting factor to each remaining measurement in the series of measurements to determine a weighted value corresponding to each said remaining measurement and calculating the average of the weighted values, the weighting factor applied to each said remaining measurement after the first remaining measurement being larger than the weighting factor for the immediately preceding remaining measurement, compares the weighted average to a maximum threshold value, and determines whether an occlusion has occurred in the fluid path of the infusion pump by determining whether the weighted average is greater than the maximum threshold value.