Sensor model supervisor for a closed-loop insulin infusion system

a closed-loop insulin infusion and sensor model technology, applied in the field of drug delivery systems, can solve the problems of less desirable use of traditional external infusion pumps and current pumps limited by the speed
US20140066884A1Inactive Publication Date: 2014-03-06MEDTRONIC MIMIMED INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
MEDTRONIC MIMIMED INC
Publication Date
2014-03-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

An electronic device includes a processor architecture and a memory element that stores instructions that, when executed by the processor architecture, perform a method of controlling an insulin infusion device for a user. The method operates the device in a closed-loop mode to deliver insulin to the user, obtains current insulin-delivered data and current glucose sensor data for the user, and processes historical insulin-delivered data and historical sensor data, to obtain predicted sensor glucose values for a historical time period. The method continues by calculating a difference between the current sensor glucose value and a predicted current sensor glucose value for the most recent sampling period. An alert is generated when the difference exceeds a threshold error amount.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. provisional patent application Ser. No. 61 / 694,950, filed Aug. 30, 2012 (titled “Closed Loop System”). This application also claims the benefit of U.S. provisional patent application Ser. No. 61 / 694,961, filed Aug. 30, 2012 (titled “Closed Loop Mobile System”). This application also claims the benefit of U.S. provisional patent application Ser. No. 61 / 812,874, filed Apr. 17, 2013 (titled “Closed Loop System”). The content of the provisional applications cited above is incorporated by reference herein.TECHNICAL FIELD

[0002] Embodiments of the subject matter described herein relate generally to drug delivery systems and more specifically to systems for controlling the infusion rate of insulin based on state variable feedback.BACKGROUND

[0003] The pancreas of a normal healthy person produces and releases insulin into the blood stream in response to elevated blood plasma glucose levels. Beta cells (β-ce...

Claims

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