Multi-electrode renal artery radio-frequency ablation catheter

Abstract

The invention discloses a multi-electrode renal artery radio-frequency ablation catheter. The multi-electrode renal artery radio-frequency ablation catheter comprises an adjusting assembly for adjusting the nerve, a conveying part for conveying the adjusting assembly to the position of the nerve, and a sheath tube, wherein the adjusting assembly comprises a plurality of electrodes for transmitting the adjusting energy to the nerve, and a bearing part for bearing the plurality of electrodes; the bearing part has a first shape and a second shape, and under the first shape, the adjusting assembly is suitable for moving in the blood vessel; under the second shape, at least one electrode is at the position suitable for transmitting the adjusting energy to the nerve. The sheath tube sleeves the conveying part, can slide along the conveying part, and sleeves or is separated from the adjusting assembly. A guide wire channel is arranged inside the multi-electrode renal artery radio-frequency ablation catheter, and the guide wire channel passes through the whole multi-electrode renal artery radio-frequency ablation catheter. Through the independent effect of the sheath tube or a guide wire or through the combined effects of the sheath tube and the guide wire, the bearing part can be switched between the first shape and the second shape.

Description

technical field [0001] The invention relates to electrosurgery, in particular to a multi-electrode renal artery radiofrequency ablation catheter. Background technique [0002] Refractory hypertension, high blood pressure (sBP ≥ 160mmHg) that is difficult to control even after using 3 or more drugs (all of which have used a diuretic), is relatively common in clinical practice, with many pathogenic factors and unclear pathogenesis. The treatment effect is very poor, and the diagnosis and treatment techniques are still immature, which has become one of the major problems in the treatment of hypertension. [0003] The latest animal and clinical experimental data prove that the regulation of renal nerves (such as denervation) can significantly and permanently reduce resistant hypertension, such as the recently developed radiofrequency ablation of renal arteries. Renal artery radiofrequency ablation is an interventional technique that achieves denervation by sending an electrode ...

AI Technical Summary

Problems solved by technology

[0005] Although related documents or patents have reported related devices for regulating the sympathetic nerve of the renal artery, the existing devices have defects such as inconvenient operation, high manufacturing cost, or low efficiency, such as the electrode bearing part cannot provide sufficient supporting force, The friction force of the cutting part of the electrode bearing part is relatively large, etc.

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