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Insulin pump

  • US 9,283,323 B2
  • Filed: 08/09/2012
  • Issued: 03/15/2016
  • Est. Priority Date: 08/12/2011
  • Status: Expired due to Fees
First Claim
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1. An apparatus for controlling an insulin pump, the apparatus comprising:

  • a user input for receiving a first gain factor, the first gain factor having been calculated based on historical data in relation to a patient;

    a measurement input for receiving data representative of a measured blood glucose level for the patient; and

    processing logic configured to;

    apply the measured blood glucose level to an insulin secretion computational model to predict an insulin output level;

    apply the first gain factor to the predicted insulin output level to determine a patient insulin deficiency level; and

    calculate a control signal for controlling the insulin output level of the insulin pump based on the patient insulin deficiency level;

    wherein the processing logic is configured to apply the first gain factor to the predicted insulin output level for a first period of time after ingestion of a meal by the patient;

    wherein the first gain factor is arranged to be tuned to the patient by minimizing a predicted insulin output level cost function based on historical data of the patient; and

    wherein the user input receives a second and third gain factors, the second and third gain factors having been calculated based on the historical data in relation to the patient, and the processing logic being configured to;

    apply the second gain factor to the predicted insulin output level when the blood glucose level for the patient is equal to or above a predetermined glucose threshold; and

    apply the third gain factor to the predicted insulin output level when the first period of time expires and when the blood glucose level for the patient is below the predetermined glucose threshold.

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