Patent ID: 9364608
Filing Date: 2016-06-14
CPC Classification: A61M

Claim Text:
1. A method of detecting an occlusion in an infusion pump having a drive mechanism that includes a motor and one or more drive train components coupled to a reservoir for delivering fluid from the reservoir through a fluid path into a body of a user, the method comprising: taking a series of measurements of a parameter associated with the motor or one of the drive train components; after each measurement in the series of measurements is taken, performing a comparison between the measurement taken and a calculated threshold value before taking the next measurement in the series of measurements; and if the comparison indicates that the measurement taken is less than the calculated threshold value, determining that there is no occlusion, and delivering said fluid to the user's body; and wherein, if the comparison indicates that the measurement taken is greater than the calculated threshold value, then an additional measurement of said parameter is taken, up to a predetermined total number of measurements, and wherein, if the additional measurement is greater than the calculated threshold value and the predetermined total number of measurements has been reached, the method further includes: (a) calculating a weighted average of the total number of measurements, (b) comparing the weighted average to a comparison value, and (c) determining whether an occlusion has occurred in the fluid path of the infusion pump by determining whether the weighted average is greater than the comparison value.