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Metabolic modelling and the closed-loop insulin delivery problem.

Garry Steil1, Kerstin Rebrin, John J Mastrototaro

  • 1Medtronic MiniMed, Northridge, CA 91325, USA. garry.steil@medtronic.com

Diabetes Research and Clinical Practice
|December 22, 2006
PubMed
Summary
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Medtronic MiniMed uses mathematical models of insulin action and secretion to automate insulin delivery. This closed-loop system differs from traditional engineering control methods for diabetes management.

Area of Science:

  • Biomedical Engineering
  • Endocrinology
  • Control Systems

Background:

  • Automated insulin delivery systems aim to improve glycemic control in diabetes.
  • Current systems often rely on algorithms to manage insulin dosing based on glucose readings.

Purpose of the Study:

  • To describe the control strategy employed by Medtronic MiniMed's artificial pancreas system.
  • To differentiate this approach from conventional control engineering techniques.

Main Methods:

  • The system models subcutaneous insulin action and endogenous insulin secretion.
  • It utilizes these models to predict glucose responses and adjust insulin delivery.
  • This contrasts with open-loop or simpler feedback control methods.

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Main Results:

  • The Medtronic MiniMed system integrates physiological modeling into its control algorithm.
  • This allows for a more personalized and adaptive approach to insulin delivery.

Conclusions:

  • The Medtronic MiniMed approach represents a sophisticated integration of physiological modeling for closed-loop insulin delivery.
  • This strategy moves beyond traditional control engineering by incorporating biological system dynamics.