×

Methods and apparatuses for detecting occlusions in an ambulatory infusion pump

  • US 8,617,110 B2
  • Filed: 04/18/2012
  • Issued: 12/31/2013
  • Est. Priority Date: 10/29/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. An infusion pump for infusing fluid from a reservoir into a body of a user, the infusion pump comprising:

  • a housing;

    a motor contained within the housing;

    one or more drive train components coupled to the motor within the housing and configured to move in response to the motor to deliver fluid from the reservoir through a fluid path into the body of the user;

    a sensor that periodically measures the value of a parameter associated with the motor or one of the drive train components during delivery of a current pulse of infusion fluid to obtain a series of measurements; and

    a processor contained within the housing, wherein the processor determines a peak value of the series of measurements, selects a second value later than the peak value within the series of measurements, calculates a difference between the peak value and the second value, increments a counter when the difference exceeds a threshold value, restarts the counter when the difference is below the threshold value, and declares an occlusion has occurred when the counter exceeds an occlusion-detection count.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×