Multipolar stimulated ablation electrode catheter provided with annular flexible head end and used for renal artery

Abstract

The invention discloses a multipolar stimulated ablation electrode catheter provided with an annular flexible head end and used for the renal artery, and aims to enable the surgical procedure to be safe and fast. The catheter comprises a catheter body and a connector connected with the catheter body, wherein the far end of the catheter body is connected with an annular flexible ring, the annular flexible ring is provided with an electrode end tube with an annular opening, at least three circular ring-shaped ring electrodes are arranged on the outer wall of the electrode end tube at intervals in a sleeving manner, and a closed head electrode is arranged at the end part of the electrode end tube. Compared with the prior art, the far end of the catheter can be sufficiently and tightly attached to the inner wall of the renal artery, electrodes on the annular flexible ring can perform stimulated mapping, radiofrequency ablation and real-time blood pressure monitoring on the endomembrane of the renal artery, radiofrequency energy loss can be further reduced by means of radiofrequency ablation of the two adjacent electrodes, the renal artery sympathetic nerve dense region between the two adjacent electrodes is ablated more sufficiently and more thoroughly, stimulated mapping, radiofrequency ablation and real-time evaluation after ablation of sympathetic nerves of the endomembrane of the renal artery are realized, and the surgical procedure is enabled to be safe and fast.

Description

technical field [0001] The invention relates to a medical device for interventional therapy, in particular to an electrode catheter for renal artery sympathetic nerve stimulation mapping, radiofrequency ablation and immediate evaluation after ablation to treat obstinate hypertension. Background technique [0002] The high incidence and prevalence of hypertension have become one of the main problems endangering human health, and it is the most common chronic disease in the world. At present, there is no accurate statistics on the prevalence of resistant hypertension, but a number of clinical studies suggest that such patients account for 20-30% of hypertensive patients and are common chronic diseases. In recent years, the prevalence of hypertension in my country has continued to increase. According to statistics, there are at least 200 million hypertensive patients in my country. According to this data, it is estimated that there are nearly 50 million patients with resistant ...

AI Technical Summary

Problems solved by technology

The structure of the ablation electrode in the prior art is unipolar ablation, the distal end is a straight section, and there is only one ablation electrode, which can only ablate one point at a time. The treatment effect is not ideal, and it can only ablate.

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