Analyte sensor calibration management
First Claim
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1. A method, comprising:
- determining, using one or more processors, an immediate sensitivity value associated with an analyte sensor;
retrieving a prior immediate sensitivity value associated with the analyte sensor;
determining, using the one or more processors, whether a first variance between the determined immediate sensitivity value and the retrieved prior immediate sensitivity value is within a first predetermined sensitivity range;
retrieving a prior composite sensitivity value when it is determined that the first variance is not within the first predetermined sensitivity range, wherein the prior composite sensitivity value includes two prior time spaced sensitivity values;
determining, using the one or more processors, whether a second variance between the determined immediate sensitivity value and the retrieved prior composite sensitivity value is within a second predetermined sensitivity range; and
assigning a successful calibration sensitivity value based on the retrieved prior composite sensitivity value when the second variance is within the second predetermined sensitivity range.
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Abstract
Methods, devices, and systems for calibrating an analyte sensor are provided. Embodiments include determining a sensitivity value associated with an analyte sensor, retrieving a prior sensitivity value associated with the analyte sensor, determining whether a variance between the determined sensitivity value and the retrieved prior sensitivity value is within a predetermined sensitivity range, determining a composite sensitivity value based on the determined sensitivity value and the retrieved prior sensitivity value, and assigning a successful calibration sensitivity value based on the retrieved prior sensitivity value when the variance is within the predetermined sensitivity range.
809 Citations
21 Claims
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1. A method, comprising:
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determining, using one or more processors, an immediate sensitivity value associated with an analyte sensor; retrieving a prior immediate sensitivity value associated with the analyte sensor; determining, using the one or more processors, whether a first variance between the determined immediate sensitivity value and the retrieved prior immediate sensitivity value is within a first predetermined sensitivity range; retrieving a prior composite sensitivity value when it is determined that the first variance is not within the first predetermined sensitivity range, wherein the prior composite sensitivity value includes two prior time spaced sensitivity values; determining, using the one or more processors, whether a second variance between the determined immediate sensitivity value and the retrieved prior composite sensitivity value is within a second predetermined sensitivity range; and assigning a successful calibration sensitivity value based on the retrieved prior composite sensitivity value when the second variance is within the second predetermined sensitivity range. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus, comprising:
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a processing unit; and a memory operatively coupled to the processing unit, the memory storing instructions which, when executed by the processing unit, causes the processing unit to; determine an immediate sensitivity value associated with an analyte sensor; retrieve a prior immediate sensitivity value associated with the analyte sensor; determine whether a first variance between the determined immediate sensitivity value and the retrieved prior immediate sensitivity value is within a first predetermined sensitivity range; retrieve a prior composite sensitivity value when it is determined that the first variance is not within the first predetermined sensitivity range, wherein the prior composite sensitivity value includes two prior timed spaced sensitivity values; determine whether a second variance between the determined immediate sensitivity value and the retrieved prior composite sensitivity value is within a second predetermined sensitivity range; and assign a successful calibration sensitivity value based on the retrieved prior composite sensitivity value when the second variance is within the second predetermined sensitivity range. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An analyte monitoring system, comprising:
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a transcutaneously positionable analyte sensor for monitoring an analyte level; an analyte monitoring device operatively coupled to the analyte sensor for receiving signals from the analyte sensor associated with the monitored analyte level; and a data processing unit coupled to the analyte monitoring device, the data processing unit configured to; determine an immediate sensitivity value associated with the analyte sensor; retrieve a prior immediate sensitivity value associated with the analyte sensor; determine whether a first variance between the determined immediate sensitivity value and the retrieved prior immediate sensitivity value is within a first predetermined sensitivity range; retrieve a prior composite sensitivity value when it is determined that the first variance is not within the first predetermined sensitivity range, wherein the prior composite sensitivity value includes two prior timed spaced sensitivity values; determine whether a second variance between the determined immediate sensitivity value and the retrieved prior composite sensitivity value is within a second predetermined sensitivity range; and assign a successful calibration sensitivity value based on the retrieved prior composite sensitivity value when the second variance is within the second predetermined sensitivity range. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification