Renal artery radiofrequency ablation catheter

Abstract

The invention discloses a renal artery radiofrequency ablation catheter. The renal artery radiofrequency ablation catheter comprises an electrode for transmitting regulating energy to nerves and a bearing part for bearing the electrode; the bearing part is of a tubular structure with a cavity and comprises a metal tube layer, the metal tube layer sequentially comprises a first segment, a second segment, a third segment, a fourth segment and a fifth segment in the direction from the far end to the near end of the bearing part, and the tube wall of the first segment, the tube wall of the second segment, the tube wall of the third segment and the tube wall of the fourth segment are provided with a first cutting groove group, a second cutting groove group, a third cutting groove group and a fourth cutting groove group respectively. The spacing distance among grooves in the second cutting groove group is larger than that among grooves in the third cutting groove group, and therefore the first segment is smoothly connected with the third segment through the second segment when the bearing part is subjected to the action of axial extrusion force; the spacing distance among grooves in the fourth cutting groove group is larger than that of grooves in the third cutting groove group, and therefore the third segment is smoothly connected with the fifth segment through the fourth segment when the bearing part is subjected to the action of axial extrusion force.

Description

technical field [0001] The invention relates to electrosurgery, in particular to a 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 catheter into a ...

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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

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