Radiofrequency ablation system and radiofrequency ablation forceps for renal artery sympathetic nerve removing operation

Abstract

The radiofrequency ablation system comprises an upper jaw and a lower jaw which can be opened and closed relatively, an upper jaw radiofrequency electrode is arranged on the upper jaw, a lower jaw radiofrequency electrode is arranged on the lower jaw, the lower jaw comprises a lower jaw body of an arc-shaped structure, and the axis of the lower jaw body extends in the left-right direction. The lower jaw body is provided with lower electrode holders which are made of insulating materials and arranged corresponding to the lower jaw radio frequency electrodes in a guiding and moving mode in the circumferential direction, the lower jaw radio frequency electrodes are fixed to the corresponding lower electrode holders respectively, the number of the upper jaw radio frequency electrodes is at least three, the upper jaw radio frequency electrodes are arranged at intervals in the left-right direction, and the number of the lower jaw radio frequency electrodes is at least three. The lower jaw radio frequency electrodes are arranged at intervals in the left-right direction, and the radio frequency ablation forceps further comprise electrode holder driving mechanisms used for driving the corresponding upper electrode holders and the lower electrode holders to move in the circumferential direction. The invention aims to provide the radiofrequency ablation system capable of retaining part of parasympathetic nerves and the radiofrequency ablation forceps used in the radiofrequency ablation system.

Description

technical field [0001] The invention relates to a medical device for treating hypertension, in particular to a radiofrequency ablation system and radiofrequency ablation forceps for renal artery sympathetic nerve removal. Background technique [0002] Hypertension is a common disease. The pathological and physiological mechanisms of hypertension are complex, but the neuroendocrine system is an important mechanism to maintain blood pressure balance, and the overexcitation of its sympathetic nerves is considered to be the basic link in the pathogenesis of hypertension. [0003] With the help of laparoscopic technique, the renal artery sympathetic nerve is ablated by radiofrequency ablation forceps on the adventitia of the renal artery, so as to achieve the purpose of blocking the transmission of nerve restriction between the central sympathetic nerve and the kidney and adrenal gland. The existing radiofrequency ablation forceps such as Chinese patent CN103393465B discloses "a ...

AI Technical Summary

Problems solved by technology

[0005] The problem with the existing radiofrequency ablation forceps is that the sympathetic and parasympathetic nerves coexist, and the ablation of the renal artery cortex by the radiofrequency electrode is indiscriminate, that is to say, both the sympathetic and parasympathetic nerves on the renal artery cortex will be indiscriminately ablated. Differential killing, but the real cause of hypertension is the transmission of the sympathetic nervous system, and the transmission of the parasympathetic nervous system has no effect on high blood pressure, so the indiscriminate killing of sympathetic and parasympathetic nerves may lead to some unnecessary complications. , or cause some loss of function in the patient

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