Method of Calibrating an Analyte-Measurement Device, and Associated Methods, Devices and Systems
First Claim
1. An in vivo glucose sensor calibration system, comprising:
- a plurality of working electrodes each including a portion which is subcutaneously positioned to generate one or more signals associated with a monitored glucose level;
a calibration sensor configured to be placed in contact with a blood sample from an off-finger calibration site to provide a calibration measurement; and
one or more processors operatively coupled to one or more of the plurality of working electrodes or the calibration sensor, the one or more processors configured to compare the generated one or more signals from the plurality of working electrodes to determine if the one or more signals differ by a predetermined threshold amount, and to convert the one or more signals to a glucose concentration level using the calibration measurement based on the comparison.
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Abstract
The invention relates to a method for calibrating an analyte-measurement device that is used to evaluate a concentration of analyte in bodily fluid at or from a measurement site in a body. The method involves measuring a concentration, or calibration concentration, of an analyte in blood from an “off-finger” calibration site, and calibrating the analyte-measurement device based on that calibration concentration. The invention also relates to a device, system, or kit for measuring a concentration of an analyte in a body, which employs a calibration device for adjusting analyte concentration measured in bodily fluid based on an analyte concentration measured in blood from an “off-finger” calibration site.
15 Citations
21 Claims
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1. An in vivo glucose sensor calibration system, comprising:
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a plurality of working electrodes each including a portion which is subcutaneously positioned to generate one or more signals associated with a monitored glucose level; a calibration sensor configured to be placed in contact with a blood sample from an off-finger calibration site to provide a calibration measurement; and one or more processors operatively coupled to one or more of the plurality of working electrodes or the calibration sensor, the one or more processors configured to compare the generated one or more signals from the plurality of working electrodes to determine if the one or more signals differ by a predetermined threshold amount, and to convert the one or more signals to a glucose concentration level using the calibration measurement based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification