Ablation Catheter Visual Confirmation Pulmonary Vein Isolation
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Solution Overview
Problem
Current ablation procedures for pulmonary vein isolation lack reliable real-time visualization to confirm the formation of a complete electrical barrier, leading to potential complications from overtreatment or undertreatment, as the lack of visible changes in treated tissue makes it difficult for physicians to determine the success of the procedure.
Innovation Solution
An ablation catheter system with a visualization feature that monitors the motion of blood distal to the target site, providing real-time images and software for comparison, allowing electrophysiologists to assess the formation of a complete circumferential lesion and take corrective measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ablation energy is applied to create lesions at the pulmonary vein ostium, then electrical isolation is achieved, but reliable visual confirmation of complete lesion formation is lost
Solution Approach 1:
The patent employs fluorescence imaging to detect subtle color changes in tissue following ablation. The fluorescence signal changes provide visual confirmation of lesion formation and electrical isolation, allowing physicians to reliably assess treatment completion based on optical property changes in the tissue.
Solution Approach 2:
The patent introduces an endoscopic imaging system as an intermediary between the ablation process and visual confirmation. This intermediary captures real-time images of the pulmonary vein ostium and displays them on a monitor, providing indirect but reliable visual information about lesion formation without interfering with the ablation process.
2Ease of operation
If ablation treatment is performed without real-time visual feedback, then procedure simplicity is maintained, but treatment precision deteriorates
Solution Approach 1:
The patent implements real-time feedback through endoscopic imaging that displays the appearance of the pulmonary vein ostium during ablation. This feedback loop allows physicians to adjust treatment parameters based on visual observations of tissue changes, ensuring precise lesion formation while maintaining procedural simplicity through intuitive visual guidance.
3Strength
If ablation energy is increased to ensure complete isolation, then electrical barrier durability is improved, but risk of tissue damage increases
Solution Approach 1:
The patent enables dynamic adjustment of ablation energy delivery based on real-time visual feedback from endoscopic imaging. Physicians can observe tissue changes during the procedure and modulate energy application accordingly, delivering sufficient energy to create durable electrical barriers while stopping before causing excessive tissue damage.
Data Source
AI summary
The present disclosure relates to ablation instruments and methods of use thereof, in particular to ablation catheters and methods for providing visual confirmation of pulmonary isolation during an ablation procedure and preferably, in real-time.