Temperature-Compensated Analyte Monitoring Devices, Systems, and Methods Thereof
First Claim
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1. A method of determining an analyte level by compensating for ambient temperature using a single temperature sensor, the method comprising:
- receiving a sensor signal derived from an in vivo analyte sensor;
detecting a temperature measurement from a temperature sensor;
determining, with a processor, whether a threshold requirement is exceeded based on the temperature measurement; and
determining, with the processor, a temperature-compensated analyte sensor signal;
wherein when the threshold requirement is not exceeded, the temperature-compensated analyte sensor signal is determined using the temperature measurement; and
wherein only when the threshold requirement is exceeded, the temperature-compensated analyte sensor signal is determined using an ambient-compensated temperature that is derived by compensating the temperature measurement for ambient temperature.
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Accused Products
Abstract
Methods, devices and systems related providing accurate glucose levels in view of temperatures that may adversely affect glucose value.
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Citations
39 Claims
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1. A method of determining an analyte level by compensating for ambient temperature using a single temperature sensor, the method comprising:
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receiving a sensor signal derived from an in vivo analyte sensor; detecting a temperature measurement from a temperature sensor; determining, with a processor, whether a threshold requirement is exceeded based on the temperature measurement; and determining, with the processor, a temperature-compensated analyte sensor signal; wherein when the threshold requirement is not exceeded, the temperature-compensated analyte sensor signal is determined using the temperature measurement; and wherein only when the threshold requirement is exceeded, the temperature-compensated analyte sensor signal is determined using an ambient-compensated temperature that is derived by compensating the temperature measurement for ambient temperature. - View Dependent Claims (2, 3, 4, 5)
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6. An analyte monitoring device, comprising:
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a housing; a processor coupled to the housing; wherein an in vivo analyte sensor is communicably coupled to the processor; wherein a temperature sensor is communicably coupled to the processor; and memory communicably coupled to the processor, wherein the memory includes instructions stored therein that, when executed by the processor, cause the processor to; receive a sensor signal from the in vivo analyte sensor; detect a temperature measurement from the temperature sensor; determine whether a threshold requirement is exceeded based on the temperature measurement; and determine a temperature-compensated analyte sensor signal; wherein when the threshold requirement is not exceeded, the temperature-compensated analyte sensor signal is determined using the temperature measurement; and wherein only when the threshold requirement is exceeded, the temperature-compensated analyte sensor signal is determined using an ambient-compensated temperature that is derived by compensating the temperature measurement for ambient temperature. - View Dependent Claims (7, 8, 9, 10)
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11. A method of compensating for ambient temperature using a single temperature sensor, the method comprising:
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detecting a temperature measurement from a temperature sensor; and determining, with a processor, an ambient-compensated temperature from the temperature measurement using an offset term. - View Dependent Claims (12, 13)
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14. An analyte monitoring device, comprising:
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a housing; a processor coupled to the housing; wherein an in vivo analyte sensor is communicably coupled to the processor; wherein a temperature sensor is communicably coupled to the processor; and memory communicably coupled to the processor, wherein the memory includes instructions stored therein that, when executed by the processor, cause the processor to; detect a temperature measurement from the temperature sensor; and determine an ambient-compensated temperature from the temperature measurement using an offset term. - View Dependent Claims (15, 16)
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17. A method of compensating for ambient temperature using temperature sensors, the method comprising:
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sampling at a first sampling rate, with a processor, first temperature measurements from a first temperature sensor on an on-body sensor; determining, with a processor, first ambient-compensated temperatures from the first temperature measurements; and determining, with a processor, final ambient-compensated temperatures by applying a correction gain or factor to the first ambient-compensated temperatures; wherein the correction gain or factor changes value at a slower rate than the sampling rate.
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18. The method of 17, wherein the correction gain or factor is applied to the first ambient-compensated temperatures.
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19. The method of 18, comprising:
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sampling at the first sampling rate, with a processor, second temperature measurements from a second temperature sensor on the on-body sensor; and determining, with a processor, second ambient-compensated temperatures with the second temperature measurements; wherein the correction gain or factor is calculated by performing a moving average between first ambient-compensated temperatures and second ambient-compensated temperatures, such that the correction gain or factor is based on a set of recent pairs of first ambient-compensated temperatures and second ambient-compensated temperatures.
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20. An analyte monitoring device, comprising:
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a housing; a processor coupled to the housing; wherein an in vivo analyte sensor is communicably coupled to the processor; wherein a first temperature sensor and second temperature sensor are communicably coupled to the processor; and memory communicably coupled to the processor, wherein the memory includes instructions stored therein that, when executed by the processor, cause the processor to; sample at a first sampling rate first temperatures measured from a first temperature sensor on the housing; determine first ambient-compensated temperatures from the first temperature measurements; and determine final ambient-compensated temperatures by applying a correction gain or factor to the first ambient-compensated temperatures; wherein the correction gain or factor changes value at a slower rate than the sampling rate. - View Dependent Claims (21, 22, 23, 24)
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25. An in vivo analyte sensor, comprising:
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a substrate layer; an electrode layer disposed on the substrate layer, wherein the electrode layer comprises a sensing area; and a temperature sensing element disposed on the substrate layer, the temperature sensing element providing a signal for determining temperature adjacent the sensing area.
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26. An analyte sensor device, comprising:
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a body comprising an elongated member having a central tunnel that inserts into skin of a subject, wherein the body is adapted to couple to the skin of the subject; electrodes disposed on the body; and a temperature sensor coupled to the body.
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27. A method, comprising:
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receiving a first sensor signal from a first electrode on an in vivo analyte sensor on an on-body sensor; receiving a second sensor signal from a second electrode on the in vivo analyte sensor, wherein the first electrode and second electrode comprise different sensing chemistries with different temperature dependencies; and determining, with a processor, a compensated temperature at the two working electrodes based on the difference between the temperature dependencies for the different sensing chemistries on the two working electrodes. - View Dependent Claims (28)
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29. An analyte monitoring device, comprising:
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a housing; a processor coupled to the housing; wherein an in vivo analyte sensor is communicably coupled to the processor, wherein the in vivo analyte sensor comprises two working electrodes; and memory communicably coupled to the processor, wherein the memory includes instructions stored therein that, when executed by the processor, cause the processor to; detect a first sensor signal from a first electrode on the in vivo analyte sensor; detect a second sensor signal from a second electrode on the in vivo analyte sensor, wherein the first electrode and second electrode comprise different sensing chemistries with different temperature dependencies; and determine a compensated temperature at the two working electrodes based on the difference between the temperature dependencies for the different sensing chemistries on the two working electrodes. - View Dependent Claims (30)
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31. An analyte monitoring system, comprising:
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an on-body unit, comprising; a first processor and first memory communicably coupled to the first processor; an in vivo analyte sensor communicably coupled to the first processor; and a temperature sensor communicably coupled to the first processor; and a receiver configured to communicate with the on-body unit, the receiver comprising; a second processor and second memory communicably coupled to the second processor; wherein at least one of the first memory and second memory includes instructions stored therein that, when executed by at least one of the first and second processors, cause the at least one first and second processor to; receive a sensor signal from the in vivo analyte sensor; detect a temperature measurement from the temperature sensor; determine whether a threshold requirement is exceeded based on the temperature measurement; and determine a temperature-compensated analyte sensor signal; wherein when the threshold requirement is not exceeded, the temperature-compensated analyte sensor signal is determined using the temperature measurement; and wherein only when the threshold requirement is exceeded, the temperature-compensated analyte sensor signal is determined using an ambient-compensated temperature that is derived by compensating the temperature measurement for ambient temperature. - View Dependent Claims (32)
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33. An analyte monitoring system, comprising:
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an on-body unit, comprising; a first processor and first memory communicably coupled to the first processor; an in vivo analyte sensor communicably coupled to the first processor; and a temperature sensor communicably coupled to the first processor; and a receiver configured to communicate with the on-body unit, the receiver comprising; a second processor and second memory communicably coupled to the second processor; wherein at least one of the first memory and second memory includes instructions stored therein that, when executed by at least one of the first and second processors, cause the at least one first and second processor to; detect a temperature measurement from the temperature sensor; and determine an ambient-compensated temperature from the temperature measurement using an offset term. - View Dependent Claims (34)
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35. An analyte monitoring system, comprising:
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an on-body unit, comprising; a first processor and first memory communicably coupled to the first processor; an in vivo analyte sensor communicably coupled to the first processor; and a first temperature sensor and second temperature sensor communicably coupled to the first processor; and a receiver configured to communicate with the on-body unit, the receiver comprising; a second processor and second memory communicably coupled to the second processor; wherein at least one of the first memory and second memory includes instructions stored therein that, when executed by at least one of the first and second processors, cause the at least one first and second processor to; sample at a first sampling rate first temperatures measured from a first temperature sensor; determine first ambient-compensated temperatures from the first temperature measurements; and determine final ambient-compensated temperatures by applying a correction gain or factor to the first ambient-compensated temperatures; wherein the correction gain or factor changes value at a slower rate than the sampling rate.
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36. The analyte monitoring system of 35, wherein the correction gain or factor is applied to the first ambient-compensated temperatures.
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37. The analyte monitoring system of 36, wherein the at least one first and second memories include instructions that, when executed by the at least one first and second processor, cause the first and second processor to:
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sample at the first sampling rate second temperatures measured from a second temperature sensor; and determine second ambient-compensated temperatures with the second temperature measurements; wherein the correction gain or factor is calculated by performing a moving average between first ambient-compensated temperatures and second ambient-compensated temperatures, such that the correction gain or factor is based on a set of recent pairs of first ambient-compensated temperatures and second ambient-compensated temperatures.
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38. An analyte monitoring system, comprising:
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an on-body unit, comprising; a first processor and first memory communicably coupled to the first processor; and an in vivo analyte sensor communicably coupled to the first processor, wherein the in vivo analyte sensor comprises two working electrodes; and a receiver configured to communicate with the on-body unit, the receiver comprising; a second processor and second memory communicably coupled to the second processor; wherein at least one of the first memory and second memory includes instructions stored therein that, when executed by at least one of the first and second processors, cause the at least one first and second processor to; detect a first sensor signal from a first electrode on the in vivo analyte sensor; detect a second sensor signal from a second electrode on the in vivo analyte sensor, wherein the first electrode and second electrode comprise different sensing chemistries with different temperature dependencies; and determine a compensated temperature at the two working electrodes based on the difference between the temperature dependencies for the different sensing chemistries on the two working electrodes. - View Dependent Claims (39)
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Specification