Temperature-compensated analyte monitoring devices, systems, and methods thereof

Inventors

Hayter, Gary A. • Bernstein, Daniel M. • Fennell, Martin J. • Love, Michael R. • Doniger, Kenneth J. • Zhang, Songbiao • Sloan, Mark K. • Cho, Hyun • Kunich, Theodore J. • Cole, Jean-Pierre • Thomas, Christopher A. • Budiman, Erwin S. • Li, David L. • Cheng, Royce • Hoss, Udo

Assignees

Abbott Diabetes Care Inc

Abstract

Methods of compensating for ambient temperature using temperature sensors, the method comprising: sampling at a first sampling rate, with a processor, first temperature measurements from a first temperature sensor on an on-body sensor. Then 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.

Core Innovation

The disclosed invention relates to determining a glucose level for an in vivo glucose sensor by using a temperature measurement from a temperature sensor of a glucose monitoring device. The device determines whether the temperature measurement exceeds a predetermined temperature threshold, and when the temperature measurement does not exceed the predetermined temperature threshold, the processors determine a temperature-compensated glucose sensor signal using the temperature measurement and the sensor signal, and determine and display a glucose level based on the temperature-compensated glucose sensor signal.

When the temperature measurement exceeds the predetermined temperature threshold, the processors do not display the glucose level on the receiver, including by wirelessly communicating an instruction to not display the glucose level. The threshold exceedance changes how the system handles sensor signals and display output based on the measured temperature.

The disclosure also addresses improved temperature sensing-area estimation using alternative temperature sensor models and arrangements, including one-thermistor versus two-thermistor models and configurations using embedded RTDs and thermocouple junctions. It further covers temperature sensor arrangements in or on thermally conductive structures, including a thermistor protruding in a thermally conductive structure and elongated sensor or tunnel arrangements with temperature sensors.

Claims Coverage

The document includes three independent claims, a method, a device, and a system, that share common conditional temperature-threshold logic. Across these claims, there are multiple inventive features that govern how a temperature measurement is compared to a predetermined temperature threshold and how glucose level determination and display are handled based on whether the threshold is exceeded.

Across the independent claims, the inventive coverage centers on using a temperature measurement in a conditional manner based on a predetermined temperature threshold: temperature-compensated glucose signal determination and glucose level display or communication occur only when the measured temperature does not exceed the threshold, while display of the glucose level is inhibited when the measured temperature exceeds the threshold via a wirelessly communicated instruction or omission of wireless communication.

Stated Advantages

Documented Applications

No documented applications found