Portable Clinical Analyzer Motion Correction
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Solution Overview
Problem
Point-of-care analyte testing systems face challenges with error-free operation due to motion and device impact, particularly in untrained hands, as they are portable and prone to drops or jostling, affecting test accuracy and reliability.
Innovation Solution
A portable clinical system that includes an analyzer with a computing device to determine spatial orientation and motion, applying correction factors for blood non-homogeneity, sedimentation, and motion, and initiating power cycles or alerts based on threshold values to ensure accurate testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If point-of-care analyte testing systems are made portable for immediate testing, then testing speed and accessibility are improved, but the systems become susceptible to motion and device impact affecting test accuracy
Solution Approach 1:
The system performs preliminary detection of motion and orientation conditions before the test is completed. Acceleration sensors continuously monitor the device state, and correction factors are prepared and applied based on detected motion events, allowing the system to compensate for motion effects without delaying the rapid point-of-care testing advantage
Solution Approach 2:
The system uses acceleration sensors to provide real-time feedback on device motion and orientation during testing. This feedback is processed to determine correction factors that are applied to the test results, creating a closed-loop system that maintains accuracy despite portable operation conditions
2Measurement precision
If correction factors are applied to compensate for motion effects, then test accuracy is improved, but system complexity increases
Solution Approach 1:
The system introduces acceleration sensors as intermediary devices that detect motion and orientation. These sensors act as mediators between the physical motion conditions and the test measurement system, providing data that enables correction without requiring complex mechanical or structural modifications to the core testing mechanism
Solution Approach 2:
The system changes the parameters used in test result calculation by applying correction factors based on detected motion and orientation. Instead of modifying the physical test process, the system adjusts the numerical parameters of the final result through computational correction, maintaining simplicity while improving accuracy
Data Source
AI summary
The present invention covers the integration and utility of accelerometer features into a clinical analysis system. For example, measurement of dynamic acceleration and orientation of a blood-testing instrument with respect to Earth's gravitational field may be used to determine reliability of a test procedure and optionally to provide corrective elements thereof.