Blood glucose control apparatus and method
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United States of America Patent
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Aug 7, 1984
Issued Date -
N/A
app pub date -
Sep 29, 1982
filing date -
Sep 29, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a method and apparatus for controlling the concentration of glucose in the blood stream of a subject at a desired level (BI) including controlling the supply of insulin (IR) by periodically measuring the blood glucose concentration (G) and selecting a predetermined basal infusion rate (RI) for the desired level, the step of selecting a predetermined basal infusion rate comprises periodically searching for the value of the basal infusion rate RI required for BI in accordance with RI=RI.sub.LAST (GY/BI) where (GY) is the present blood glucose level corrected to fit a least squares regression line, when the slope of the least squares regression line fit for the last five G values is less than 0.5 and GY is within .+-.50% of the desired BI level, and wherein the period between searches is equal to or greater than the period between glucose measurements.
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