Continuous Glucose Monitor Auxiliary Sensor Compression Detection
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Solution Overview
Problem
Continuous glucose monitors (CGMs) experience poor circulation and tissue fluid compression during sleeping postures, leading to increased glucose measurement errors.
Innovation Solution
Incorporating an auxiliary sensor, such as a capacitive or pressure sensor, connected to the circuit board of the CGM to detect compression and transmit information for correcting glucose measurement results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the CGM is implanted on the arm for continuous glucose monitoring, then glucose data can be obtained continuously, but during sleeping postures the CGM becomes compressed causing poor circulation and increased measurement errors
Solution Approach 1:
The patent applies preliminary action by detecting the compressed state before it affects glucose measurement accuracy. The auxiliary sensor detects compression during sleeping posture, and the system proactively alerts the user or adjusts measurement parameters before significant measurement errors occur, thereby maintaining measurement precision despite the harmful compression factor.
Solution Approach 2:
The patent implements feedback by using the auxiliary sensor to continuously monitor the compression state of the CGM and providing real-time information back to the control unit. This feedback mechanism allows the system to identify when compression is occurring and take corrective actions, such as alerting the user to change position or adjusting glucose readings, thus resolving the contradiction between continuous monitoring and compression-related errors.
2Duration of action of moving object
If the CGM remains on the arm during sleeping, then continuous glucose monitoring is maintained, but blood circulation and tissue fluid flow are impaired
Solution Approach 1:
The patent applies self-service by enabling the CGM to self-detect its own compression state through the auxiliary sensor. The system monitors its own condition during sleeping and can autonomously alert the user or adjust measurements without external intervention, maintaining continuous monitoring capability while addressing circulation issues caused by compression.
Solution Approach 2:
The feedback mechanism provided by the auxiliary sensor allows the CGM to continuously monitor its own state during sleeping periods. This real-time feedback enables the system to detect when compression is occurring and take appropriate actions, thereby maintaining both continuous monitoring duration and circulation reliability by alerting users to adjust their sleeping position.
3Stability of the object's composition
If the CGM is compressed during sleeping posture, then the device remains in place for continuous monitoring, but tissue fluid circulation is poor leading to measurement errors
Solution Approach 1:
The patent applies preliminary action by detecting compression before it significantly impacts glucose measurement accuracy. The auxiliary sensor monitors tissue compression during sleeping posture, and the system proactively alerts the user or adjusts measurement parameters before large measurement errors occur, thereby maintaining both device stability and measurement precision.
Solution Approach 2:
The feedback mechanism through the auxiliary sensor enables continuous monitoring of the CGM's compression state during sleeping. This real-time feedback allows the system to identify when compression is occurring and take corrective actions, such as alerting the user to change position or adjusting glucose readings, thus resolving the contradiction between maintaining device stability and ensuring measurement precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The CGM can accurately identify its compressed state, thereby improving the accuracy of blood glucose measurements and reducing large measurement errors.
Implementation Method 1
the auxiliary sensor is a capacitive sensor, and when the capacitive sensor is subjected to compression, a capacitance value detected by the capacitive sensor will change
Implementation Method 2
the auxiliary sensor is a pressure sensor, and when the pressure sensor is subjected to compression, a pressure value detected by the pressure sensor will change
Data Source
AI summary
A continuous glucose monitor, comprising a housing and a circuit board arranged in the housing, wherein an electronic component is carried on the circuit board; a probe assembly configured to penetrate skin and connected to the circuit board; and an auxiliary sensor connected to the circuit board and configured to detect a compressed state of the continuous glucose monitor. The continuous glucose monitor provided in the present disclosure can identify its own compressed state, thereby improving the accuracy of glucose measurement.