Radiofrequency ablation controlled electrode catheter for renal artery

Abstract

A radio-frequency ablation electrode catheter used for treating refractory hypertension by entering a renal artery through skin and a vessel. The electrode catheter is provided with a catheter body (3). The distal end of the catheter body (3) is connected to an electrode, and the proximal end thereof is connected to a manipulation handle (4); an ablation electrode (1) and a monitoring electrode (2) are arranged on the distal end along the axis of the catheter body (3); a distance is provided between the ablation electrode (1) and the monitoring electrode (2); the ablation electrode (1) is provided thereon with a pour hole (14); and the monitoring electrode (2) monitors the temperature of the ablated sympathetic nerve tissue during an ablation process, judges whether a required value for clinical treatment has been reached, and can also obtain the conduction of a sympathetic nerve signal, and assist in judging whether the end of the operation has been reached by comparing the conduction waveforms of the sympathetic nerve before and after the ablation.

Description

technical field [0001] The invention relates to a medical device for interventional therapy, in particular to a radiofrequency ablation electrode catheter for percutaneous, blood vessel, and renal artery access to treat obstinate hypertension. Background technique [0002] Nearly one-fifth to one-third of adults in the world suffer from high blood pressure. Hypertension causes 7.5 million deaths every year, and the death rate ranks first in the world. For every 20 / 10mmHg increase in adult blood pressure, the mortality rate from cardiovascular disease doubles. Despite increased efforts by healthcare professionals to better diagnose and control hypertension, only half of treated patients achieve the established blood pressure targets. Traditional drug control regimens, patient compliance, physician inertia, drug side effects, and drug ineffectiveness are all factors that lead to poor control effects. Now Europe does not allow patients with diabetes or eGFR<60 to use ACE or...

AI Technical Summary

Problems solved by technology

Another method in the prior art is to use an ablation catheter for treating arrhythmia to ablate the sympathetic nerve on the renal artery to achieve the purpose of treating intractable hypertension. This kind of ablation catheter has a relatively large diameter and is inconvenient to operate in the renal artery , and the ablation area is larger, causing greater damage to the renal artery

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