Portable ECG Device Adaptive Lead Selection
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Solution Overview
Problem
Conventional portable electrocardiographic devices often use non-optimal lead systems for waveform measurement, leading to deteriorated waveform quality and analysis accuracy.
Innovation Solution
A portable electrocardiographic device that includes an electrode unit for measuring waveforms, an analysis unit for analyzing waveforms based on the lead system used, a storage unit for storing waveform data and analysis results, and a remeasurement facilitating unit that prompts users for re-measurement in a different lead system when predetermined conditions are met, such as arrhythmia or atrial fibrillation, to improve accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed lead system is used for electrocardiographic measurement, then the device operation is simplified, but the measurement precision deteriorates when the lead system is not optimal for the measured waveform state
Solution Approach 1:
The patent implements dynamic lead system selection based on the measured electrocardiographic waveform state. The analysis unit automatically determines the appropriate lead system (e.g., limb leads for rhythm disturbances, chest leads for waveform quality assessment) according to the specific cardiac condition detected, transforming the fixed lead system into an adaptive, condition-dependent configuration that optimizes measurement precision while maintaining ease of use.
Solution Approach 2:
The patent changes the lead system parameter based on the waveform state characteristics. When arrhythmia is detected, the system switches to limb leads; when waveform quality needs assessment, it uses chest leads. This parameter change approach allows the device to adapt the measurement configuration to the specific cardiac condition, resolving the contradiction between operational simplicity and measurement precision.
2Measurement precision
If the optimal lead system is automatically selected based on waveform state, then the measurement precision is improved, but the device complexity increases due to additional analysis and control mechanisms
Solution Approach 1:
The patent implements self-service through automatic lead system selection. The analysis unit autonomously evaluates the electrocardiographic waveform state and determines the appropriate lead system without requiring manual intervention. The control unit automatically executes the remeasurement with the selected lead system, enabling the device to serve itself by making intelligent decisions about measurement configuration based on the detected cardiac conditions.
Solution Approach 2:
The patent employs feedback mechanisms where the analysis unit continuously monitors the electrocardiographic waveform state and provides feedback to the control unit. Based on this feedback about waveform characteristics and detected conditions, the system adjusts the lead system selection and initiates remeasurement if necessary. This closed-loop feedback approach automates the optimization process while managing device complexity through structured control logic.
3Measurement precision
If remeasurement is performed in a different lead system when conditions are met, then the analysis accuracy is improved, but the measurement time increases
Solution Approach 1:
The patent applies preliminary action by performing initial measurements with a standard lead system to quickly assess the electrocardiographic waveform state. The analysis unit then evaluates whether the current lead system is appropriate or if remeasurement in a different lead system is needed. This preliminary assessment allows the device to make informed decisions about whether to proceed with additional remeasurement, thereby reducing unnecessary time expenditure while maintaining high analysis accuracy when required.
Solution Approach 2:
The patent implements partial action by selectively performing remeasurement only when the analysis unit identifies specific conditions that require it (e.g., arrhythmia, poor waveform quality). Rather than always performing comprehensive remeasurement, the system applies partial remeasurement based on the specific cardiac condition detected, optimizing the balance between measurement time and analysis accuracy by avoiding unnecessary additional measurements in routine cases.
Data Source
AI summary
A portable electrocardiographic device configured to measure an electrocardiographic waveform using a plurality of types of lead systems includes an electrode unit configured to be brought into contact with a subject's body and measure an electrocardiographic waveform, an analysis unit configured to analyze the electrocardiographic waveform measured by the electrode unit in accordance with a lead system at a time of measurement of the electrocardiographic waveform, a storage unit configured to store the electrocardiographic waveform measured at the electrode unit, the lead system, and an analysis result of the electrocardiographic waveform analyzed by the analysis unit in association with one another, and a remeasurement facilitating unit configured to prompt a user, when the analysis result or a state of the measured electrocardiographic waveform satisfies a predetermined condition, for remeasurement in a predetermined lead system different from the lead system at the time of the measurement of the electrocardiographic waveform.