Renal artery sympathetic nerve removal cold saline radiofrequency ablation catheter with seal valve

Abstract

The invention relates to a renal artery sympathetic nerve removal cold saline radiofrequency ablation catheter with a seal valve. The renal artery sympathetic nerve removal cold saline radiofrequency ablation catheter comprises a spiral ablation pipe and the seal valve connected to the far end of a through hole, wherein the through hole for a guide wire to penetrate through and saline to be injected is formed in the ablation pipe in the spiral direction. In the ablation pipe, cold saline injection and guide wire penetration share the same through hole, the seal valve is arranged at the far end of the through hole, the catheter is guided by the guide wire to enter a human body and is accurately positioned, cold saline can be injected through the through hole in the ablation process under the condition that the seal valve is sealed so that coking of the inner wall of a blood vessel and blood vessel hypertonicity of the sinews can be prevented, the internal structure of an inner pipe is greatly simplified, the outer diameter of the catheter is reduced, and manufacturing difficulty and cost are reduced; meanwhile, the ablation pipe is in the spiral shape in the ablation process, reliable curvature is provided, and therefore the renal artery sympathetic nerve removal cold saline radiofrequency ablation catheter is tightly attached to the inner wall of a renal artery, and the ablation effect is improved. The renal artery sympathetic nerve removal cold saline radiofrequency ablation catheter can be applied to the renal denervation.

Description

technical field [0001] The invention relates to a minimally invasive medical device, in particular to a renal artery sympathetic cold saline radiofrequency ablation catheter with a sealing valve. Background technique [0002] Hypertension is a disease that seriously threatens human health. It is an important risk factor for various cardiovascular diseases, coronary heart disease, especially stroke, and a common cause of kidney damage, heart failure and death. About 2 / 3 of the causes of death from cardiovascular disease are related to hypertension. In 2013, there were 300 million hypertensive patients in China, and the proportion of patients with resistant hypertension was about 15%. With the continuous development of relevant research on hypertension, its treatment concept is also constantly updated. Although there are countless drugs to treat high blood pressure, a considerable number of people are resistant to them. There are also patients whose blood pressure cannot be...

AI Technical Summary

Problems solved by technology

Although the catheter is perfused with cold saline, the bending degree of the tube body is also controlled by the handle, which is random and cannot achieve a good wall-attachment effect; and there is

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