Integrated Mapping and Ablation Catheter for Arrhythmia Treatment
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Solution Overview
Problem
Current methods for treating cardiac arrhythmias, such as ventricular tachycardia and atrial fibrillation, face challenges in accurately locating and ablating the source of reentrant arrhythmias due to ambiguous electrogram morphology and the need for separate mapping and ablation devices.
Innovation Solution
A medical device with a distal end featuring a plurality of mapping elements and a treatment element, capable of recording local monophasic action potentials and transmitting energy for ablation or electroporation, which combines mapping and treatment functionality to identify and treat ectopic foci and rotors within cardiac tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate mapping and ablation devices are used to identify and treat arrhythmia sources, then mapping precision can be improved, but device complexity and procedural time increase
Solution Approach 1:
The patent combines mapping electrodes and ablation elements into a single integrated catheter device. The mapping electrodes record electrograms to identify arrhythmia sources, while the ablation elements (RF electrodes, cryoablation balloons, or ultrasound transducers) are positioned at the same distal end of the catheter, allowing both mapping and treatment functions to be performed with one device rather than requiring separate mapping and ablation devices.
Solution Approach 2:
The catheter device is designed with multi-functionality, serving both as a mapping tool and an ablation tool. The distal end includes both mapping electrodes for recording electrical activity and treatment elements for delivering ablation energy, enabling the single device to perform multiple functions that previously required separate specialized devices.
2Reliability
If extensive trial and error ablation is performed to locate arrhythmia sources, then treatment completeness may be improved, but treatment time and energy consumption increase
Solution Approach 1:
The patent performs mapping and identification of arrhythmia sources (ectopic foci, rotors, reentry circuits) before performing ablation. The mapping electrodes record electrograms to precisely locate the source of the arrhythmia, and the system identifies specific targets such as fractionated electrogram sites or rotor cores. This preliminary identification step guides the subsequent ablation, eliminating the need for extensive trial-and-error ablation and reducing overall treatment time while maintaining treatment completeness.
3Adaptability or versatility
If multiple separate devices are used for mapping and ablation, then functional versatility is improved, but ease of operation deteriorates
Solution Approach 1:
The patent merges mapping functionality and ablation functionality into a single catheter device. The distal end contains both mapping electrodes for recording electrograms and treatment elements for delivering ablation energy (RF, cryo, or ultrasound). This integration allows the operator to perform both mapping and ablation with one device, simplifying the procedure and improving ease of operation compared to using separate mapping and ablation devices.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables non-ambiguous representation of cardiac electrical activity, streamlines the site identification and ablation process, and effectively treats the source of electrical conduction by adjusting tissue temperature or applying electroporation, thereby terminating arrhythmias.
Implementation Method 1
ablation (for example, radiofrequency (RF) ablation, cryoablation, ultrasound ablation, laser ablation, and the like)
Implementation Method 2
ablation (for example, radiofrequency (RF) ablation, cryoablation, ultrasound ablation, laser ablation, and the like)
Implementation Method 3
ablation (for example, radiofrequency (RF) ablation, cryoablation, ultrasound ablation, laser ablation, and the like)
Implementation Method 4
ablation (for example, radiofrequency (RF) ablation, cryoablation, ultrasound ablation, laser ablation, and the like)
Implementation Method 5
The non-ambiguous representation of local myocardial depolarization, repolarization timing, and action potential duration is enabled through the use of electrodes that are able to record local monophasic action potentials (MAPs)
Data Source
AI summary
A method and system capable of identifying ectopic foci, rotors, or conduction pathways involved in reentrant arrhythmias within cardiac tissue, and then treating identified ectopic foci, rotors, and/or pathways with either lethal or sub-lethal temperatures. The system includes a medical device having one or more mapping elements and one or more treatment elements, and a computer programmable to identify ectopic foci and rotors based at least in part on signals received from the one or more mapping elements at one or more locations.