Defibrillation Catheter Electrode Segmentation for Signal Integrity
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Solution Overview
Problem
In intracardiac defibrillation systems, the existing technology cannot independently measure intracardiac potential at each electrode during defibrillation due to damping of electrographic waveforms and the need for complex control of multiple switches, leading to rounding of waveforms and increased circuit complexity.
Innovation Solution
A defibrillation catheter system with a first and second power supply part connected to the catheter, allowing continuous connection of electrode groups to an electrocardiograph without switching parts, enabling independent measurement of intracardiac potential at each electrode during defibrillation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective resistance is used to connect electrodes to the electrocardiograph during defibrillation, then the circuit is protected from high voltage, but the intracardiac potential signal is damped and waveform rounding occurs
Solution Approach 1:
The electrode connections are segmented into two independent groups: one group (first electrode group) connected to the power supply part for defibrillation, and another group (second electrode group) connected to the electrocardiograph for signal measurement. This segmentation allows simultaneous defibrillation and high-quality signal recording without mutual interference, resolving the contradiction between circuit protection and signal quality.
2Adaptability or versatility
If multiple independent on-off switches are used for each electrode, then each electrode can be independently controlled, but the circuit scale increases and control becomes complex
Solution Approach 1:
The control functions for multiple electrodes are merged into a single integrated control system. The control part manages both the power supply part and the electrocardiograph through unified control logic, eliminating the need for multiple independent switches while maintaining the ability to independently control each electrode group's operation mode.
3Adaptability or versatility
If electrodes are connected to both power supply and electrocardiograph through switching parts, then defibrillation and measurement can be performed, but the intracardiac potential cannot be independently acquired at each electrode during defibrillation
Solution Approach 1:
The electrode connections are segmented into two independent groups: one group (first electrode group) connected to the power supply part for defibrillation, and another group (second electrode group) connected to the electrocardiograph for signal measurement. This segmentation allows simultaneous defibrillation and high-quality signal recording without mutual interference, resolving the contradiction between circuit protection and signal quality.
Data Source
AI summary
Provided are a defibrillation catheter system, a defibrillation power supply device, and a method for controlling the device during observation of intracardiac potential and defibrillation. A defibrillation catheter system 1 includes a catheter 20; a first power supply part 6A and a second power supply part 6B connected to the catheter 20; and an electrocardiograph 40 measuring an intracardiac potential, wherein the catheter 20 is provided with a first electrode group 21 having at least a 1-1 electrode and a 1-2 electrode and a second electrode group 22 having at least a 2-1 electrode and a 2-2 electrode, the first and second electrode groups 21 and 22 are connected to the electrocardiograph 40, the 1-1 electrode and the 2-1 electrode are connected to the first power supply part 6A, and the 1-2 electrode and the 2-2 electrode are connected to the second power supply part 6B.