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;
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.
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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.
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Citations
16 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification