Methods and systems for early signal attenuation detection and processing

Inventors

Harper, Wesley Scott

Assignees

Abbott Diabetes Care Inc

Abstract

Provided are methods and apparatus for receiving sensor data from an analyte sensor of a sensor monitoring system, processing the received sensor data with time corresponding calibration data, outputting the processed sensor data, detecting one or more adverse conditions associated with the sensor monitoring system, disabling the output of the sensor data during the adverse condition time period, determining that the one or more detected adverse conditions is no longer present in the sensor monitoring system, retrieving the sensor data during the adverse condition time period, processing the retrieved sensor data during the adverse condition time period, and outputting the processed retrieved sensor data.

Core Innovation

The invention describes a glucose monitoring system that includes a glucose sensor with at least two electrodes and a portion configured to be positioned under skin of a user. The glucose sensor samples a biological fluid of the user to provide sensor data, and a transmitter unit coupled to the glucose sensor receives the sensor data, processes the sensor data using calibration data that comprises data associated with a sensitivity of the glucose sensor, stores processed sensor data, and transmits the processed sensor data over a Bluetooth wireless communication link.

A primary receiver unit receives the processed sensor data over the Bluetooth wireless communication link using an antenna and a radio frequency transceiver and outputs to a display a numerical value based on the processed sensor data. The primary receiver unit also outputs to the display a first line graph that is a continuous depiction of the processed sensor data over time. The transmitter unit and at least a portion of the glucose sensor are disposed within a single integrated housing.

The system detects an adverse condition that results in the primary receiver unit displaying a data gap so that the first line graph has an end corresponding to a time associated with a start of the adverse condition. During a time period corresponding to the adverse condition, processed sensor data is stored in memory of the transmitter unit, and after the adverse condition is corrected, the primary receiver unit outputs processed sensor data for the time period corresponding to the adverse condition such that the data gap is backfilled by outputting a second line graph having a first end corresponding to the time associated with the start of the adverse condition and a second end corresponding to a time associated with an end of the adverse condition.

In additional aspects, the adverse condition comprises one or more sensor data values being outside a predetermined range, and the system outputs the first line graph and the second line graph to a same graph. The same-graph output includes a first axis having a time unit of measurement and a second axis having a glucose concentration unit of measurement. Further aspects include a signal error associated with the primary receiver unit and adverse condition handling with immediate or delayed display after correction.

Claims Coverage

The partial content includes three independent glucose monitoring system claims, each sharing a common structure: an under-skin glucose sensor with electrodes, a transmitter that processes sensor data using calibration data including sensor sensitivity and transmits over a Bluetooth wireless communication link, and a primary receiver that displays a continuous time depiction with data-gap backfilling after an adverse condition is corrected. The main inventive features focus on transmitter-side calibrated processing and storage, Bluetooth-based transmission to a receiver display, and adverse-condition detection that creates a display gap and triggers backfilling using stored processed data, with adverse-condition definitions and display graph characteristics refined in different claim sets.

Across the independent claims in the provided partial content, the coverage centers on an under-skin electrode-based glucose sensor that provides sensor data to a transmitter which processes the data using calibration data that includes sensitivity and transmits the processed data over Bluetooth to a primary receiver. The primary receiver outputs a continuous depiction over time and handles adverse conditions by creating a display data gap and later backfilling the gap by outputting a second line graph using processed sensor data stored during the adverse time period. The independent claims further specify different adverse-condition bases and include same-graph output with time and glucose-concentration axes in one independent claim set.

Stated Advantages

Documented Applications