PREDICTION OF MEAL AND/OR EXERCISE EVENTS BASED ON PERSISTENT RESIDUALS

    公开(公告)号:US20210205535A1

    公开(公告)日:2021-07-08

    申请号:US17142425

    申请日:2021-01-06

    Abstract: Exemplary embodiments provide an approach to predicting meal and/or exercise events for an insulin delivery system that otherwise does not otherwise identify such events. The insulin delivery system may use a model of glucose insulin interactions that projects estimated future glucose values based on the history of glucose values and insulin deliveries for the user. The predictions of meal events and/or exercise events may be based on residuals between actual glucose values and predicted glucose values. The exemplary embodiments may calculate a rate of change of the residuals over a period of time and compare the rate of change to thresholds to determine whether there likely has been a meal event or an exercise event. The insulin delivery system may then take measures to account for the meal or exercise by the user.

    COMPENSATION FOR MISSING READINGS FROM A GLUCOSE MONITOR IN AN AUTOMATED INSULIN DELIVERY SYSTEM

    公开(公告)号:US20250144295A1

    公开(公告)日:2025-05-08

    申请号:US19017941

    申请日:2025-01-13

    Abstract: Exemplary embodiments may address the problem of missing blood glucose concentration readings from a glucose monitor that transmits blood glucose concentration readings over a wireless connection due to problems with the wireless connection. In the exemplary embodiments, an automated insulin delivery (AID) device uses an estimate in place of a missing blood glucose concentration reading in determining a predicted future blood glucose concentration reading for a user. Thus, the AID device is able to operate normally in generating insulin delivery settings despite not receiving a current blood glucose concentration reading for a current cycle. There is no need to suspend delivery of insulin to the user due to the missing blood glucose concentration reading.

    COMPENSATION FOR CALIBRATION OFFSETS IN AGENT DELIVERY DEVICES

    公开(公告)号:US20220331519A1

    公开(公告)日:2022-10-20

    申请号:US17718663

    申请日:2022-04-12

    Abstract: Exemplary embodiments may compensate for loss of calibration by sensors that provide sensed analyte measurements to delivery devices. The exemplary embodiments may obtain one or more calibrated analyte measurements, such as by using techniques to obtain that the analyte measurement value that are known to produce properly calibrated analyte values. The one or more calibrated analyte measurements are compared to a recent analyte measurement to determine a negative or positive offset. The offset may be added to the recent analyte measurement to generate an updated analyte measurement that reflects the calibrated analyte measurement. In addition, past analyte measurement values within a time window may be updated as well by adding the offset to the past analyte measurement values. The exemplary embodiments may also compensate for the past over-delivery or under-delivery of an agent by the delivery device due to the loss of calibration.

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