A focal ablation catheter with a guidewire inserted through the flushing channel

By introducing an ablation electrode and a flushing channel into the catheter, combined with guidewire guidance, the problem of poor catheter maneuverability in small and hard-to-reach areas is solved, enabling efficient RF ablation and flushing fluid application, and improving the efficiency of the ablation procedure.

CN114948191BActive Publication Date: 2026-05-26BIOSENSE WEBSTER (ISRAEL) LTD
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Patent Information

Application Number
CN202210181028.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-02-26
Filing Date
2022-02-25
Publication Date
2026-05-26
Estimated Expiration
2042-02-25

AI Technical Summary

Technical Problem

Existing technologies have difficulty effectively performing RF ablation in small and hard-to-reach ablation sites, and the catheters are poorly maneuverable in these sites.

Method used

A catheter has been designed, comprising an ablation electrode and a flushing channel. The flushing channel is formed along the catheter axis and has a lumen and a flushing orifice for simultaneously guiding a guidewire and applying flushing fluid. The guidewire is matched to the diameter of the flushing orifice to prevent leakage. The catheter may also be equipped with a sensing electrode to manipulate the catheter to the target location and apply ablation pulses and flushing fluid via the guidewire.

Benefits of technology

It improves the maneuverability of the catheter in small and hard-to-reach areas, reduces ablation cycle time, achieves efficient ablation and flushing on target tissue, and improves catheter maneuverability and ablation efficiency.

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Abstract

The present invention is entitled "Focused Ablation Catheter Combined with a Guidewire Inserted Through a Flushing Channel". The present invention provides a catheter comprising an ablation electrode and a flushing channel. The ablation electrode is configured to ablate tissue of a patient organ and is fitted onto an insertion cannula for insertion into the patient organ. The flushing channel comprises: (i) a lumen formed along the axis of the insertion cannula and configured to allow flushing fluid to flow to the ablation electrode, and (ii) one or more flushing orifices formed in the ablation electrode and configured to apply flushing fluid to the organ. The flushing channel is configured to simultaneously (i) receive a guidewire for guiding the catheter and (ii) allow flushing fluid to flow.
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Citation Information

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