Cardiac Recording Device Adjusting Bipolar Waveform Marks
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Solution Overview
Problem
The bipolar potential recording method for heart excitation analysis faces challenges in accurately recording waveforms due to noise, electrode contact failures, and misalignment of electrode arrangements, leading to decreased analysis accuracy.
Innovation Solution
A recording device and method that utilize a multi-electrode catheter to acquire vital signs, record bipolar potentials, add marks to waveforms, and adjust their positions based on reference channels' potentials, improving analysis accuracy by leveraging relevant bipolar potentials from adjacent electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If bipolar potential recording method is used, then excitation timing accuracy is improved, but waveform recording accuracy deteriorates due to noise and electrode contact failures
Solution Approach 1:
The system performs preliminary actions by adding marks to waveforms at predetermined positions before any adjustment is needed. These marks serve as reference points that can be later adjusted based on actual waveform characteristics, ensuring accurate excitation timing identification even when waveform quality is poor due to noise or contact failures.
Solution Approach 2:
The adjusting unit implements feedback by using bipolar potentials from reference channels (which include electrodes from the main channel) to adjust the position of marks on the main channel waveform. This feedback mechanism compensates for noise and contact failures by referencing adjacent electrode signals that are more likely to be clean.
2Ease of operation
If marks are added at fixed positions on time axis, then recording process is simplified, but analysis accuracy deteriorates due to waveform misalignments
Solution Approach 1:
Marks are preliminarily added at fixed predetermined positions on the time axis during the recording process, maintaining simplicity. Subsequently, these marks are adjusted based on actual waveform characteristics and reference channel potentials, achieving both ease of operation and high analysis accuracy.
Solution Approach 2:
The position parameter of marks is dynamically changed from fixed predetermined positions to adjusted positions based on waveform analysis and reference channel potentials. This parameter change allows the system to adapt to waveform misalignments while maintaining the initial simplicity of fixed-position marking.
3Ease of operation
If electrode arrangement is perpendicular to excitation propagation direction, then electrode placement is simplified, but waveform differentiation capability deteriorates
Solution Approach 1:
Reference channels act as intermediaries between the main channel and the excitation propagation direction information. By using bipolar potentials from reference channels (which include adjacent electrodes), the system can infer the correct temporal relationship and adjust mark positions accordingly, compensating for the loss of waveform differentiation caused by perpendicular electrode arrangement.
Data Source
AI summary
A recording device includes an acquisition unit configured to acquire vital signs through a sensor device having a plurality of electrodes, a recording unit configured to record a bipolar potential of a main channel which is defined by combining the plurality of electrodes, using the vital signs, an addition unit configured to add a mark to each waveform plotted based on variation of the bipolar potential over time, at a predetermined position on a time axis, and an adjusting unit configured to adjust a position of the mark added to each waveform. The adjusting unit is configured to adjust the position of the mark added to the bipolar potential of the main channel, based on bipolar potentials of reference channels including electrodes included in the main channel.