Method and apparatus for detecting occlusions in an ambulatory infusion pump
First Claim
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;
filtering the series of measurements to remove the highest measurement and the lowest measurement;
calculating a weighted average of the remaining measurements in the series of measurements;
comparing the weighted average to a maximum threshold value; and
determining 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.
1 Assignment
0 Petitions
Accused Products
Abstract
An improved pump, reservoir and reservoir piston are provided for controlled delivery of fluids. A motor is operably coupled to a drive member, such as a drive screw, which is adapted to advance a plunger slide in response to operation of the motor. The plunger slide is removably coupled to the piston. A method, system, and an article of manufacture for automatically detecting an occlusion in a medication infusion pump is provided. The electrical current to an infusion pump is measured. Based on a series of measurements of one or more variables, the infusion pump detects whether there is an occlusion in the system.
189 Citations
18 Claims
-
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; filtering the series of measurements to remove the highest measurement and the lowest measurement; calculating a weighted average of the remaining measurements in the series of measurements; comparing the weighted average to a maximum threshold value; and determining 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification