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Infusion devices and related methods and systems for regulating insulin on board

  • US 10,232,113 B2
  • Filed: 04/24/2014
  • Issued: 03/19/2019
  • Est. Priority Date: 04/24/2014
  • Status: Active Grant
First Claim
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1. A method of operating an infusion device operable to deliver fluid to a body of a user, the fluid influencing a physiological condition in the body, the method comprising:

  • automatically suspending operation of the infusion device to deliver the fluid to the user based at least in part on a current measurement value for the physiological condition of the user;

    determining a current amount of active fluid in the body of the user;

    determining a steady state threshold value for the fluid that is active in the body of the user based on a basal infusion rate;

    after automatically suspending operation of the infusion device, when the current amount of active fluid is less than the steady state threshold value, automatically resuming operation of the infusion device to deliver the fluid to the user to regulate the current amount of active fluid to the steady state threshold value based on a difference between the current amount of active fluid and the steady state threshold value when the current measurement value for the physiological condition of the user is less than a threshold value for the physiological condition of the user; and

    automatically suspending the delivery of the fluid when the current amount is greater than the steady state threshold value.

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