Electrode carrier, electrophysiology catheter and high pressure pulsed ablation system

CN116407261BActive Publication Date: 2026-06-26SHANGHAI ARTECHMED MEDICAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI ARTECHMED MEDICAL TECH CO LTD
Filing Date
2023-02-17
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In the prior art, the ring electrode is prone to coming into contact with non-determined ablation sites during high-voltage pulse ablation, leading to complications. When the flexible circuit board is used as the electrode carrier, its bending performance is poor and stress concentration occurs, resulting in cracking of the electrode carrier.

Method used

Design an electrophysiological catheter, including a catheter shaft and an electrode segment. The electrode segment includes an end electrode and an electrode assembly. The electrode of the electrode assembly is located on the side of the electrode carrier near the catheter shaft. Stress diffusers and shaping elements are provided to disperse stress and increase the bending radius. Blind circuits are provided on the electrode carrier to detect cracking.

Benefits of technology

To prevent the electrode from forming an ablation foci by contacting non-predetermined sites, avoid cracking of the electrode carrier, ensure stable operation of the electrode assembly in different vascular anatomy structures, and monitor the electrode status in real time through a crack detection module.

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Abstract

The application provides an electrode carrier, an electrophysiological catheter and a high-voltage pulse ablation system. The electrophysiological catheter comprises a catheter shaft and an electrode segment, the electrode segment is arranged at a distal end segment of the catheter shaft; the electrode segment comprises an end electrode and an electrode assembly, the electrode assembly is closer to a proximal end of the catheter shaft than the end electrode; the electrode assembly comprises at least one electrode carrier and a plurality of electrodes arranged on the electrode carrier; when the end electrode ablates the target tissue, the end electrode and at least one electrode of the electrodes are paired to discharge, and at least one electrode participating in the paired discharge is arranged on a side of the electrode carrier close to the catheter shaft. When the end electrode ablates the target tissue, the application can make the electrodes participating in the pairing face away from or at least hardly contact the non-target tissue, thereby preventing the electrodes participating in the pairing from acting on the non-target tissue to form an unintended ablation lesion.
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