Ablation Catheter Parallel Lesion Segments
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Solution Overview
Problem
Current catheter ablation techniques for treating atrial fibrillation have limited success rates due to the complexity of creating continuous linear lesion sets, which are challenging to anchor at both ends, leading to potential recurrence of atrial tachycardias and requiring high operator skill.
Innovation Solution
An ablation catheter with a distal probe shaped to define two elongate ablating surfaces that can create continuous ablation lesion segments alongside each other, simplifying the creation of parallel double contiguous linear lesions, thereby improving the efficacy of atrial arrhythmia treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional catheter ablation techniques are used to create linear lesion sets, then treatment can be performed with existing devices, but the procedure requires high operator skill and has limited success rates due to difficulty in creating continuous lesions
Solution Approach 1:
The ablation catheter is divided into multiple segments or modules along its length, with each segment capable of independent positioning and ablation. This segmentation allows the operator to create continuous linear lesions by sequentially activating multiple segments along the catheter, reducing the skill requirement compared to creating entire continuous lesions with a single catheter tip.
Solution Approach 2:
The invention transitions from traditional single-point ablation to multi-point simultaneous ablation along the catheter length. By distributing ablation capability across multiple segments in the longitudinal dimension, the system achieves continuous lesion formation more easily, improving reliability while reducing operator skill requirements.
2Reliability
If complex continuous linear lesion sets are created to treat atrial fibrillation, then treatment efficacy improves, but the procedure time and complexity increase
Solution Approach 1:
The ablation catheter is pre-configured with multiple active segments along its length before insertion. Once positioned in the atrium, multiple ablation sites are activated simultaneously or in rapid sequence, creating continuous linear lesions more quickly than traditional sequential ablation methods, thereby reducing procedure time while maintaining treatment efficacy.
Solution Approach 2:
The catheter design enables continuous ablation along its length through multiple simultaneously active segments, eliminating gaps between lesion segments. This continuous action creates complete linear lesions that prevent atrial tachycardia recurrence while reducing the total time needed compared to traditional step-by-step ablation approaches.
3Manufacturing precision
If traditional single-point ablation catheters are used, then device simplicity is maintained, but the ability to create continuous linear lesions is limited
Solution Approach 1:
The catheter is constructed with multiple discrete segments or electrodes distributed along its length, each capable of independent ablation. This segmentation enables precise control over lesion formation at multiple locations simultaneously, achieving continuous linear lesions with high manufacturing precision while keeping each individual segment relatively simple in design.
Solution Approach 2:
The multi-segment catheter design serves multiple functions: it can create continuous linear lesions, perform sequential ablation if needed, and adapt to different anatomical configurations. This multi-functionality achieves high lesion continuity while the modular design keeps individual components relatively simple, balancing device complexity with performance.
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
The ablation catheter enhances both acute and chronic success rates of ablation procedures by simplifying the creation of continuous lesions, reducing operator skill requirements, and minimizing the risk of atrial tachycardia recurrence.
Implementation Method 1
The ablation catheter comprises an elongate proximal shaft and a distal ablation probe... configured to make, in an atrial wall of a heart, one or more ablation lesions
Data Source
AI summary
In accordance with the inventive concepts, provided are systems and methods for treating atrial arrhythmia. A system can comprise an elongate proximal shaft and a distal ablation probe, which is: (a) supported at a distal end of the elongate proximal shaft, (b) shaped, when unconstrained, so as to define at least first and second elongate ablating surfaces running alongside each other, and (c) configured to make, in an atrial wall of a heart, one or more ablation lesions that include at least first and second elongate continuous ablation lesion segments that are spaced apart and run alongside each other. The method uses the system to make the lesions.