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Safety limits for closed-loop infusion pump control

  • US 8,105,268 B2
  • Filed: 10/19/2010
  • Issued: 01/31/2012
  • Est. Priority Date: 09/07/2001
  • Status: Active Grant
First Claim
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1. An infusion pump system to deliver an infusion formulation to a user, comprising:

  • a sensing device to monitor glucose levels in the user;

    a computing element to receive sensing device input and to adjust delivery of the infusion formulation as a function of the rate of change of the glucose levels in the user over time, wherein the infusion formulation delivered to the user is limited to maximum and minimum values; and

    a pump in communication with the computing element to deliver the infusion formulation to the user;

    wherein if the adjusted delivery of the infusion formulation is not within the maximum and minimum values, the computing element determines whether a user-initiated signal is present in order to proceed.

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