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Apparatus and method for controlling insulin infusion with state variable feedback
专利权人:
Sami S. Kanderian; Jr.
发明人:
Sami S. Kanderian, Jr.,Garry M. Steil
申请号:
US12387420
公开号:
US08348886B2
申请日:
2009.05.01
申请国别(地区):
US
年份:
2013
代理人:
摘要:
An infusion system, which may be a closed loop infusion system or “semi-closed-loop” system, uses state variable feedback to control 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 “semi-closed-loop” system further includes prompts that are displayed or sounded or otherwise provide indications to the user prior to fluid delivery. 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 delivery system infuses a fluid into the user at a rate dictated by the commands from the controller. The system may use three state variables, subcutaneous insulin concentration, plasma insulin concentration, and insulin effect, and corresponding gains, to calculate an additional amount of fluid to be infused as a bolus and to be removed from the basal delivery of the fluid.
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