Physiological Sensor History Backfill for Wireless Reading Gaps
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Solution Overview
Problem
Current portable medical devices like insulin pumps and glucose monitors experience gaps in sensor readings due to noise or power loss, leading to incomplete records in the user interface, which affects the display of insulin therapy results.
Innovation Solution
A physiological sensor history backfill system that wirelessly communicates with a local base device to detect and fill gaps in sensor readings by requesting and transmitting missing data from the physiological sensor to the local base device, ensuring a complete record is maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the CGM continuously sends sensor information to the insulin pump via radio frequency network, then the sensor history area is filled with complete readings, but noise or interference may prevent successful transmission of readings
Solution Approach 1:
The system performs preliminary actions by storing sensor readings at the CGM device itself before transmission to the insulin pump. When transmission failures occur, the CGM has already preserved the readings locally, enabling subsequent retrieval and backfilling of missing data without requiring continuous successful transmission.
Solution Approach 2:
The system implements feedback mechanisms where the insulin pump requests specific missing readings from the CGM based on detected gaps in the sensor history. The CGM responds by providing only the missing readings, creating a feedback loop that efficiently restores complete data without redundant transmissions.
2Loss of information
If the CGM stores sensor readings locally to ensure data availability, then reading completeness is improved, but the device complexity increases
Solution Approach 1:
The system extracts the data storage function from the insulin pump and places it at the CGM device. This separation means the pump only needs to store recent readings for immediate display, while the CGM handles historical data storage and retrieval, simplifying the pump's complexity while ensuring reading completeness.
3Loss of information
If the system requests and transmits missing sensor readings to fill gaps, then the record completeness is improved, but the communication time and energy consumption increase
Solution Approach 1:
Instead of requesting all historical readings from the CGM, the system uses partial action by requesting only the specific missing readings that fill detected gaps in the sensor history. This selective retrieval minimizes communication time and energy consumption while achieving complete record restoration.
Data Source
AI summary
A physiological sensor history backfill system and method including a method of sensor history backfill for a local base device operable to wirelessly communicate with a physiological sensor connected to a patient, the method including: obtaining physiological readings for the patient at a predetermined interval; storing the physiological readings at the physiological sensor as sensor physiological readings; storing the physiological readings at the local base device as historic physiological readings; obtaining a current physiological reading for the patient; transmitting the current physiological reading to the local base device in a current reading message; detecting a record gap in the historic physiological readings between the current physiological reading and the historic physiological readings; and filling the record gap in the historic physiological readings with sensor physiological readings from the physiological sensor when the current reading message does not include the sensor physiological readings to fill the record gap.