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US 11,229,382 B2Granted
Self-powered analyte sensor and devices using the same
AssigneeAbbott Diabetes Care Inc.
InventorsBenjamin Jay Feldman, Lei He, Michael Love, Hyun Cho
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Abstract
Systems, devices and methods for monitoring analyte levels using a self-powered analyte sensor and associated sensor electronics are provided.
Claims15
A method of monitoring analyte levels, comprising:
- generating a current by an analyte sensor when in contact with interstitial fluid, the current corresponding to monitored analyte levels;
- receiving, by a capacitor device in sensor electronics, the current through a switch in the sensor electronics to accumulate charge in the capacitor device, wherein the switch is positioned between the analyte sensor and the capacitor device, wherein the switch has a first state and a second state, wherein the capacitor device receives the current generated by the analyte sensor when the switch is in the first state and wherein the capacitor device is unable to receive the current generated by the analyte sensor when the switch is in the second state;
- switching, by the switch, from the first state to the second state upon detecting a first magnetic field generated by a display device that exceeds a threshold level;
- discharging, by the capacitor device when the switch is in the second state, accumulated charge to power one or more sensor signal processing components in the sensor electronics, wherein a first component of the one or more sensor signal processing components comprises a wire loop configured to generate a magnetic pulse signal indicating that the switch is in the second state by using the accumulated charge discharged from the capacitor device.
1 more element
A device for monitoring analyte levels, comprising:
- an analyte sensor configured to generate current when in contact with interstitial fluid, the current corresponding to monitored analyte levels;
- and
- sensor electronics comprising:
- a capacitor device, a switch positioned between the analyte sensor and the capacitor device, and one or more sensor signal processing components, wherein:
- the capacitor device is configured to receive the current through the switch to accumulate charge, wherein the switch has a first state and a second state, wherein the capacitor device is operably coupled to the analyte sensor when the switch is in the first state such that the capacitor device is able to receive the current, and wherein the capacitor device is operably decoupled from the analyte sensor when the switch is in the second state such that the capacitor device is unable to receive the current;
- the switch is configured to switch from the first state to the second state upon detecting a first magnetic field generated by a display device that exceeds a threshold level;
- and
- the capacitor is configured to discharge, when the switch is in the second state, accumulated charge to power the one or more sensor signal processing components, wherein a first component of the one or more sensor signal processing components comprises a wire loop configured to generate a magnetic pulse signal indicating that the switch is in the second state by using the accumulated charge discharged from the capacitor device.
5 more elements
Dependencies are inferred from the claim text.