Methods and apparatuses for detecting occlusions in an ambulatory infusion pump
First Claim
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 adapted to measure at least two different parameters associated with the motor or one of the drive train components; and
a processor contained within the housing and adapted to combine the at least two parameters associated with the motor or one of the drive train components and to determine whether an occlusion has occurred in the fluid path of the infusion pump using the combined parameters.
2 Assignments
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 measurements of one or more variables, the infusion pump detects whether there is an occlusion in the system. The methods of detecting occlusions may be dynamic.
159 Citations
13 Claims
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1. An infusion pump for infusing fluid from a reservoir into a body of a user, the infusion pump comprising:
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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 adapted to measure at least two different parameters associated with the motor or one of the drive train components; and a processor contained within the housing and adapted to combine the at least two parameters associated with the motor or one of the drive train components and to determine whether an occlusion has occurred in the fluid path of the infusion pump using the combined parameters. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An infusion pump for infusing fluid from a reservoir into a body of a user, the infusion pump comprising:
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a housing; a motor contained within the housing; one or more drive train components coupled to the motor within the housing and adapted 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 adapted to periodically measure 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 and adapted to determine a peak value of the series of measurements, select a second value later than the peak value from the series of measurements, and determine whether an occlusion has occurred in the fluid path of the infusion pump using the peak value, the second value, and a threshold value. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification