Method and Apparatus for Providing Notification Function in Analyte Monitoring Systems
First Claim
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1. An analyte monitoring system, comprising:
- an analyte sensor in operative contact with an analyte, the sensor adapted to generate a plurality of data points associated with a monitored analyte concentration;
a processor adapted to process the plurality of data points generated by the analyte sensor; and
logic implemented by the processor to determine whether a current data point of the plurality of data points is within a predetermined threshold zone, wherein if it is determined that the current data point is within the predetermined threshold zone, the logic implemented by the processor determines a rate of change of the analyte level based on the received plurality of data points, to determine if the rate of change indicates the projected glucose value exceeding the alarm threshold within a predetermined amount of time, and to perform one or more of a line fit analysis of a slope or anticipated alarm condition persistence evaluation when the determined rate of change indicates that the projected glucose level exceeds the alarm threshold within the predetermined amount of time.
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Abstract
Method and apparatus for determining and outputting projected alarms or notifications associated with anticipated hyperglycemic or hypoglycemic conditions are provided. Systems and kits employing the devices described herein executing the one or more routines described are also provided.
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Citations
25 Claims
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1. An analyte monitoring system, comprising:
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an analyte sensor in operative contact with an analyte, the sensor adapted to generate a plurality of data points associated with a monitored analyte concentration; a processor adapted to process the plurality of data points generated by the analyte sensor; and logic implemented by the processor to determine whether a current data point of the plurality of data points is within a predetermined threshold zone, wherein if it is determined that the current data point is within the predetermined threshold zone, the logic implemented by the processor determines a rate of change of the analyte level based on the received plurality of data points, to determine if the rate of change indicates the projected glucose value exceeding the alarm threshold within a predetermined amount of time, and to perform one or more of a line fit analysis of a slope or anticipated alarm condition persistence evaluation when the determined rate of change indicates that the projected glucose level exceeds the alarm threshold within the predetermined amount of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method, comprising:
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generating a plurality of data points associated with a monitored analyte concentration; and determining whether a current data point of the plurality of data points is within a predetermined threshold zone, wherein if it is determined that the current data point is within the predetermined threshold zone, determining a rate of change of the analyte level based on the received plurality of data points, to determine if the rate of change indicates the projected glucose value exceeding the alarm threshold within a predetermined amount of time, and to perform one or more of a line fit analysis of a slope or anticipated alarm condition persistence evaluation when the determined rate of change indicates that the projected glucose level exceeds the alarm threshold within the predetermined amount of time. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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receiving a plurality of data points relating to analyte levels measured by a sensor; determining a least squares fit based on the received plurality of data points; determining an estimate of a slope and an intercept of the analyte level at a predetermined time based on the received plurality of data points and the determined least squares fit; determining a standard deviation of the slope and the intercept based on the determined estimated slope and the intercept; extrapolating a mean intercept and a standard deviation intercept in time at a future time; and determining a probability of the analyte level at the future time at or exceeding an alarm threshold level, and outputting an alarm if the determined probability at the future time is at or exceeds the alarm threshold level. - View Dependent Claims (17, 18, 19, 20)
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21. An apparatus, comprising:
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one or more processors; and a memory for storing instructions which, when executed by the one or more processors, causes the one or more processors to receive a plurality of data points relating to analyte levels measured by a sensor, determine a least squares fit based on the received plurality of data points, determine an estimate of a slope and an intercept of the analyte level at a predetermined time based on the received plurality of data points and the determined least squares fit, determine a standard deviation of the slope and the intercept based on the determined estimated slope and the intercept, extrapolate a mean intercept and a standard deviation intercept in time at a future time, and determine a probability of the analyte level at the future time at or exceeding an alarm threshold level, and output an alarm if the determined probability at the future time is at or exceeds the alarm threshold level. - View Dependent Claims (22, 23, 24, 25)
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Specification