Pacemaker Pulse Detection With Optimized Synthetic ECG Leads
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pacemaker pulse detection in ECG recorders is compromised by misalignment between pacemaker pulse injection direction and standard ECG lead vectors, leading to reduced amplitude and reliability, especially for low-amplitude pulses, and is computationally expensive.
Innovation Solution
Construct a synthetic lead signal from a weighted sum of ECG lead signals using an optimization procedure that maximizes the pacemaker pulse signal strength, aligning the synthetic lead vector with the direction of pacemaker pulse injection, and apply a detection algorithm to this signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard ECG lead vectors are used for pacemaker pulse detection, then the detection method is simple and computationally efficient, but the detection reliability is reduced due to misalignment between lead vectors and pacemaker pulse injection direction
Solution Approach 1:
The patent applies preliminary action by pre-computing optimal lead vectors that are specifically aligned with pacemaker pulse injection directions before detection occurs. These pre-computed vectors are stored and directly applied during pulse detection, eliminating the need for real-time optimization calculations while ensuring maximum alignment with the pacemaker pulse direction.
Solution Approach 2:
The patent implements dynamics by making the lead vectors adaptive and configurable based on the specific pacemaker model and injection direction. Rather than using fixed standard lead vectors, the system dynamically selects or computes optimal vectors tailored to each pacemaker configuration, allowing the detection system to adapt to different injection directions and maximize detection reliability.
2Measurement precision
If standard ECG lead vectors are used for pacemaker pulse detection, then the computational demand is low, but the detection precision is reduced due to reduced amplitude of misaligned pulses
Solution Approach 1:
The patent applies preliminary action by pre-computing optimal lead vectors that are specifically aligned with pacemaker pulse injection directions before detection occurs. These pre-computed vectors are stored and directly applied during pulse detection, eliminating the need for real-time optimization calculations while ensuring maximum alignment with the pacemaker pulse direction.
Solution Approach 2:
The patent implements parameter changes by transforming the standard ECG lead vectors into optimized lead vectors that are specifically tailored to match the pacemaker pulse injection direction. This parameter transformation maximizes the amplitude of detected pulses by ensuring optimal alignment between the lead vector and the pulse direction, thereby improving measurement precision.
3Reliability
If standard ECG lead vectors are used for pacemaker pulse detection, then the system is easy to operate, but false alarms increase due to reduced detection reliability
Solution Approach 1:
The patent applies preliminary action by pre-computing optimal lead vectors that are specifically aligned with pacemaker pulse injection directions before detection occurs. These pre-computed vectors are stored and directly applied during pulse detection, eliminating the need for real-time optimization calculations while ensuring maximum alignment with the pacemaker pulse direction.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A method for pacemaker pulse detection in ECG which is based on constructing an artificial ECG lead signal from recorded ECG lead signals or lead vectors using a weighted sum of lead signals with weights optimized such that a pre-defined objective function correlated with the strength of the pacemaker pulse signal is maximized, and then performing pace pulse detection within this artificial lead signal.