Diameter-adjustable and guide-free pulsed electric field ablation catheter and device thereof

Abstract

The invention relates to a diameter-adjustable and guide-free pulsed electric field ablation catheter and a device thereof, and belongs to the technical field of medical instruments. The diameter-adjustable and guide-free pulsed electric field ablation catheter comprises a handle, a three-cavity sheathing canal, an adjustable catheter, adjusting wires, an annular electrode and an insulated wire, wherein the three-cavity sheathing canal is arranged on the handle, and one end, which is far away from an operator, of the three-cavity sheathing canal is provided with one end of the adjustable catheter; the adjusting wires which are connected with the handle and are used for adjusting the shape of the adjustable catheter is arranged on the adjustable catheter; the middle part of the adjustable catheter and the other end of the adjustable catheter are respectively connected with the handle through the adjusting wires; and the annular electrode is arranged on the adjustable catheter and is connected with the handle through the insulated wire. The diameter of an ablation ring can be adjusted, a guide wire or a mapping system does not need to be additionally arranged, the ablation catheter can autonomously enter the pulmonary vein and be positioned, and an ablation effect can be autonomously checked without additionally configuring a mapping electrode catheter.

Description

technical field [0001] The invention relates to a pulse electric field ablation catheter with adjustable diameter and no need for guidance and equipment thereof, belonging to the technical field of medical devices. In the present invention, the end close to the operator is set as the proximal end, and the end far away from the operator is set as the far end. Background technique [0002] In clinical operations to eliminate atrial fibrillation, pulmonary vein isolation is often used to achieve electrical conduction block between pulmonary veins and atria, thereby eliminating atrial fibrillation. The forms of ablation energy include radio frequency, freezing, pulsed electric field, etc., and the forms of energy transfer include balloons, electrodes, etc. The electrodes of radio frequency and pulsed electric field are usually arranged in a straight line, ring, spiral, etc., and stick to the pulmonary vein ostium to ablate cardiomyocytes to achieve the effect of ablation and is...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of how to overcome the defects in the prior art that require an additional configuration of a guide wire or a mapping system to achieve ablation positioning and require an additional configuration of a mapping electrode catheter to verify the ablation effect

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