Closed-Loop Method for Controlling Insulin Infusion

a closed-loop, insulin-injection technology, applied in the direction of instruments, catheters, applications, etc., can solve the problem of less desirable use of traditional external infusion pumps by users, and achieve the effect of reducing the accuracy of sensor signals
US20080188796A1Inactive Publication Date: 2008-08-07MEDTRONIC MIMIMED INC
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Patent Information

Authority / Receiving Office
US ยท United States
Patent Type
Applications(United States)
Current Assignee / Owner
MEDTRONIC MIMIMED INC
Publication Date
2008-08-07
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

A closed loop infusion system controls the rate that fluid is infused into the body of a user. The closed loop infusion system includes a sensor system, a controller, and a delivery system. The sensor system includes a sensor for monitoring a condition of the user. The sensor produces a sensor signal, which is representative of the condition of the user. The sensor signal is used to generate a controller input. The controller uses the controller input to generate commands to operate the delivery system. The delivery system infuses a liquid into the user at a rate dictated by the commands from the controller. Preferably, the sensor system monitors the glucose concentration in the body of the user, and the liquid infused by the delivery system into the body of the user includes insulin.
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Description

RELATED APPLICATIONS

[0001] This application is continuation-in-part of U.S. application Ser. No. 09 / 586,175 filed Jun. 1, 2000, entitled โ€œClosed Loop System For Controlling Insulin Infusion,โ€ which claims priority on U.S. Provisional Application Ser. No. 60 / 137,601 filed Jun. 3, 1999, entitled โ€œClosed Loop Algorithms For Continuous Monitoring And Insulin Infusion,โ€ and U.S. Provisional Application Ser. No. 60 / 162,255 filed Oct. 29, 1999 and entitled โ€œClosed Loop Algorithms For Continuous Monitoring And Insulin Infusion,โ€ all of which are specifically incorporated by reference herein.FIELD OF THE INVENTION

[0002] This invention relates to closed loop drug delivery systems and more specifically to systems for controlling the infusion rate of insulin based on continuously monitored body glucose levels.BACKGROUND OF THE INVENTION

[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 (...

Claims

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