Physiological Sensor History Backfill for Missing 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 user interface displays and records of insulin therapy.
Innovation Solution
A physiological sensor history backfill system and method that detects gaps in stored readings and fills them with data from the sensor, using a local base device to synchronize and store readings from a physiological sensor.
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 should be complete, but noise or interference prevents successful transmission resulting in gaps in the sensor history
Solution Approach 1:
The system performs preliminary actions by storing sensor readings locally in the CGM memory before transmission to the insulin pump. When transmission fails due to noise or interference, the locally stored readings are subsequently retrieved and transmitted, ensuring no data loss. This preliminary local storage resolves the contradiction by preparing backup copies in advance that can compensate for transmission failures.
Solution Approach 2:
The CGM acts as an intermediary between the sensor and the insulin pump, providing local memory storage and data buffering capabilities. This intermediary function allows the system to decouple the sensor from direct continuous transmission to the pump, enabling data to be stored locally and transmitted later when conditions are favorable, thus preventing information loss from transmission interruptions.
2Use of energy by moving object
If the CGM loses power, then the device shuts down to conserve energy, but this disables the CGM or insulin pump resulting in gaps in sensor readings
Solution Approach 1:
The system performs preliminary action by continuously storing sensor readings in the CGM's local memory even when power is low or during transmission interruptions. This ensures that when power is restored or transmission resumes, the data is already prepared and available, preventing gaps in the sensor history without requiring continuous high power consumption.
Solution Approach 2:
The CGM performs self-service by autonomously storing and managing its own sensor data in local memory without requiring constant external power or active transmission. The device can maintain data storage functionality with minimal power, and the insulin pump later retrieves this stored data, ensuring continuity of the sensor history record even during power-constrained periods.
3Loss of information
If the insulin pump stores sensor readings in sensor history area, then a complete record is maintained, but transmission failures and power loss create gaps that prevent complete display of patient history
Solution Approach 1:
The system performs preliminary action by having the CGM pre-store sensor readings in its local memory before transmission to the insulin pump. This ensures that even if transmission fails or power is lost, the data is already prepared and can be retrieved later, maintaining complete patient history records without relying solely on continuous successful transmissions.
Data Source
AI summary
Techniques disclosed herein relate to sensor history backfill. In some embodiments, the techniques may involve storing physiological readings at a local base device as historic physiological readings, the physiological readings obtained by the local base device from a physiological sensor. The techniques may further involve receiving, at the local base device, a current physiological reading in a current reading message. The techniques may further involve detecting, at the local base device, a record gap in the historic physiological readings between the current physiological reading and the historic physiological readings. The techniques may further involve 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.