Pulse electric field ablation system and control method thereof

Abstract

The invention discloses a pulsed electric field ablation system and a control method thereof. The ablation system comprises a power supply module and an ablation catheter, wherein the power supply module comprises two output ends with opposite polarities; the ablation catheter comprises a plurality of electrode pairs, wherein each electrode pair comprises a pair of electrodes which are adjacent in positions and are connected with the two output ends of the power supply module respectively; and the two electrodes which are adjacent in positions and belong to different electrode pairs are connected with the same output end of the power supply module. The polarities of the adjacent electrodes are opposite only when the electrodes are in the same electrode pair, and the condition that the polarities of one electrode and the polarities of the two adjacent electrodes are opposite does not exist, so that contact resistors of the adjacent electrodes do not multiplex and divide voltage, the voltage of a target resistor on the electric path of the electrode pair is relatively high, and the electric field intensity is more ideal.

Description

technical field [0001] The invention relates to the field of electronic equipment, in particular to a pulsed electric field ablation system and a control method thereof. Background technique [0002] At present, for patients with arrhythmias that cannot be controlled by drugs, non-drug treatments such as catheter ablation and pacemaker implantation are usually used to control heart rate to improve symptoms. The ablation catheters used in catheter ablation are classified into single-electrode catheters and multi-electrode catheters according to the number of electrodes. The unit efficiency of single-electrode catheters is low and time-consuming; while multi-electrode catheters have more contact points of electrodes. The contact resistance of the contact point of the adjacent electrode is due to the voltage division effect caused by multiplexing, which leads to the reduction of the voltage of the target resistance on the electrical path of the catheter, which weakens the effec...

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Problems solved by technology

The ablation catheters used in catheter ablation are classified into single-electrode catheters and multi-electrode catheters according to the number of electrodes. The unit efficiency of single-electrode catheters is low and time-consuming; while multi-electrode catheters have more contact points of electrodes. The contact resistance of the contact point of the adjacent electrode is due to the voltage division effect caused by multiplexing, which leads to the decrease of the voltage of the target resistance on the electrical path of the catheter, which weakens the effect of the electric field and cannot achieve the ideal electric field strength. The effect of the entire multi-electrode catheter is poor

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