INFUSION DEVICES AND RELATED RESCUE DETECTION METHODS
First Claim
1. A method of operating an infusion device to deliver fluid to a body of a user, the method comprising:
- autonomously operating the infusion device to deliver the fluid based at least in part on measurement values for a physiological condition in the body of the user, the physiological condition being influenced by the fluid delivered by the infusion device;
detecting a rescue condition based on the measurement values; and
in response to detecting the rescue condition, limiting delivery of the fluid while autonomously operating the infusion device.
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Accused Products
Abstract
Infusion systems, infusion devices, and related operating methods are provided. An exemplary method of operating an infusion device to deliver fluid to a body of a user involves obtaining measurement values for a physiological condition influenced by the fluid, autonomously operating the infusion device to deliver the fluid based at least in part on the measurement values, and detecting a nonactionable condition based on the measurement values. In response to detecting the nonactionable condition, delivery of the fluid is limited while maintaining autonomous operation of the infusion device. In one exemplary embodiment, the nonactionable condition is a rescue condition indicative of the user having consumed fast-acting carbohydrates, and thus insulin delivery may be automatically limited in response to detecting the rescue carbohydrate consumption.
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Citations
20 Claims
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1. A method of operating an infusion device to deliver fluid to a body of a user, the method comprising:
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autonomously operating the infusion device to deliver the fluid based at least in part on measurement values for a physiological condition in the body of the user, the physiological condition being influenced by the fluid delivered by the infusion device; detecting a rescue condition based on the measurement values; and in response to detecting the rescue condition, limiting delivery of the fluid while autonomously operating the infusion device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An infusion system comprising:
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a sensing arrangement to obtain measurement values for a physiological condition from a body of a user; and an infusion device including an actuation arrangement operable to deliver fluid to the body of the user and a control system coupled to the actuation arrangement, the fluid influencing the physiological condition of the user, wherein the control system is coupled to the sensing arrangement to autonomously operate the actuation arrangement to deliver a variable rate of infusion based on the measurement values, detect a rescue condition based on the measurement values, and temporarily limit the variable rate of infusion in response to the rescue condition. - View Dependent Claims (15, 16, 17)
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18. An infusion device comprising:
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an actuation arrangement operable to deliver fluid to a body of a user; a data storage element to maintain control parameters for a closed-loop operating mode; a communications interface to receive measurement values indicative of a physiological condition in the body of the user influenced by the fluid; and a control module coupled to the actuation arrangement, the data storage element, and the communications interface to autonomously operate the actuation arrangement to deliver a variable rate of infusion based on the measurement values and the control parameters in accordance with the closed-loop operating mode, detect a rescue condition based on one or more of the measurement values, and temporarily limit the variable rate of infusion in response to the rescue condition. - View Dependent Claims (19, 20)
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Specification