Multi-Cavity PFA Catheter Tip for Simpler Electrode Manufacturing
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Solution Overview
Problem
Existing PFA catheters for atrial fibrillation treatment have complex structures that are difficult to manufacture, complicating production and increasing the difficulty of producing PFA catheters, which are crucial for circumferential pulmonary vein ablation and ensuring catheter electrode contact.
Innovation Solution
A pulse energizing device with a multi-cavity component and electrodes, featuring a central and peripheral cavities, sub-tube portions, and insert components, allowing for simple processing and production through cutting, and includes a design that facilitates deformation and cooling to enhance manufacturing reproducibility and reduce discomfort during treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If existing PFA catheter structures are used, then ablation function is achieved, but manufacturing complexity increases and production difficulty rises
Solution Approach 1:
The catheter structure is divided into multiple independent sub-tube portions (first sub-tube portion, second sub-tube portion, etc.), each containing electrodes. These segmented portions can be manufactured separately and then assembled, significantly simplifying the manufacturing process while maintaining the complex ablation functionality
Solution Approach 2:
The electrodes are inserted into the sub-tube portions, and the insulated shaft is inserted into the main body of the catheter. This nested arrangement allows multiple components to be integrated in a compact manner, reducing overall structural complexity while preserving all necessary functions
2Productivity
If traditional catheter designs are used, then ablation capability is provided, but production time and manufacturing difficulty increase
Solution Approach 1:
By segmenting the catheter into modular sub-tube portions with electrodes, each component can be manufactured independently using standardized processes, then quickly assembled. This modular approach dramatically improves production efficiency while maintaining manufacturing simplicity
Solution Approach 2:
The electrodes are pre-inserted into the sub-tube portions during manufacturing, and the insulated shaft is pre-inserted into the main body. These preliminary actions are performed during assembly rather than requiring complex post-manufacturing procedures, thereby improving overall production efficiency
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 device simplifies manufacturing, improves reproducibility, reduces patient discomfort, and enhances treatment convenience by allowing for selective tissue ablation with high-voltage pulsed electric fields, while maintaining a smaller outer diameter for easier blood vessel passage and reducing heat generation.
Implementation Method 1
the other aspect is pulsed ablation using the principle of bioelectroporation
Data Source
AI summary
A pulse energizing device includes a multi-cavity component, at least one insert component and a plurality of electrodes. The multi-cavity component is cut along an axial direction to form a plurality of sub-tube portions, and each electrode is mounted around a respective sub-tube portion. The insert component is inserted into the multi-cavity component, and one end of the insert component is connected with a distal end. Therefore, under the pull of the insert component, the distal end is movable along the axial direction to drive deformation of each sub-tube portion. In the present disclosure, by setting the multi-cavity component, and directly processing on the basis of the multi-cavity component, a structure and a processing method are simple, so that the pulse energizing device can be reproduced.