Spline basket ablation catheter capable of being bent in two directions

Abstract

The invention provides a spline basket pulsed electric field ablation catheter capable of being bent bidirectionally. The spline basket pulsed electric field ablation catheter comprises an adjusting handle, a catheter body and a treatment head. The adjusting handle comprises a bending control knob, and the bending control knob is connected with two pull wires; the catheter main body comprises at least two stay wire cavities which are axially and symmetrically distributed; the bending control knob enables the far end of the main body catheter to be bent through at least two pull wires, so that the treatment head is bent in two directions. The treatment head includes a spline basket having a plurality of splines, wherein each spline includes at least one annular electrode. The spline basket catheter has controllable bidirectional bending performance, helps a doctor to easily reach four pulmonary veins at different spatial positions, well fits the vestibules of the pulmonary veins through control of complex angles, and provides an effective high-density pulsed electric field ablation ring or surface through arrangement of 10 splines and high-density electrodes, so that the catheter has the advantages of being simple in structure, convenient to use and high in practicability. The purposes of quickly, effectively and safely isolating the pulmonary vein and treating the atrial fibrillation are achieved.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a two-way bendable spline basket ablation catheter. Background technique [0002] Cardiac ablation has undergone a great deal of innovation and rapid development since it was first performed in 1969. Ablation was first used in patients with supraventricular tachycardia with accessory pathways and WWD syndrome, and today, ablation is also used to treat atrial flutter, atrial fibrillation, and ventricular arrhythmias. [0003] The goal of ablation is to destroy the underlying arrhythmic tissue and create a transmural and continuous permanent lesion. Percutaneous catheter ablation of pulmonary vein (PV) isolation in atrial tissue using radio-frequency ablation (RFA) and cryoablation therapy has become a widely accepted procedure for the treatment of atrial fibrillation (AF). Other energy modalities for catheter ablation include microwaves, high-intensity focused ultrasound, low-in...

AI Technical Summary

Problems solved by technology

However, this patent can only realize the deflection of the middle part of the catheter, and cannot quickly and accurately control the direction of the treatment head

[0008] At present, none of the pulsed electric field spline basket catheters at home and abroad can actively adjust the bending in two directions, and it is difficult to help the catheter reach the vestibule of the pulmonary vein at different angles for treatment, which increases the difficulty of the doctor's operation and increases the risk of surgery

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