A radio frequency ablation device

A technology of radiofrequency ablation and ablation electrodes, which is applied in the field of medical devices, can solve problems such as high patient requirements, lower blood pressure, and large renal artery damage, and achieve the effects of fast and accurate operation, expanded range, and reduced toxicity

Active Publication Date: 2016-08-10
BEIJING MED ZENITH MEDICAL SCI CORP LTD
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Problems solved by technology

[0006] Although a large number of clinical results have confirmed that the patient's blood pressure has been continuously reduced after treatment with this medical ablation catheter, but this method has high requirements for the patient itself
If there are no problems such as renal artery stenosis and multiple renal arteries; in addition, since the sympathetic nerve is located in the adventitia of the renal artery, catheter ablation requires the ablation of the artery through the wall, which will cause greater damage to the renal artery and easily lead to renal artery stenosis; the ablation point bit is not easy to grasp, which lead to the limitation of its application

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Embodiment Construction

[0027] The structure and working mode of the radiofrequency ablation device of the present invention will be described in detail below with reference to the drawings and embodiments.

[0028] In 2008, the American Heart Association (AHA) classified refractory hypertension Defined as: taking 3 antihypertensive drugs with different mechanisms of action (one of which is a diuretic) at the same time after lifestyle modification, or requiring at least 4 drugs to control systolic and diastolic blood pressure at the target level (<140 / 90mmHg ).

[0029] Although the pathological and physiological mechanisms of hypertension are complex, the neuroendocrine system is an important mechanism for maintaining blood pressure balance, and the overexcitation of the sympathetic nerve is considered to be the basic link in the pathogenesis of hypertension. A large number of animal experiments and clinical studies have also confirmed the impact of the sympathetic nervous system on blood pressure,...

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Abstract

The invention discloses a radiofrequency ablation device which is used for removing the vagus nerve of the renal artery and reducing excitability of the renal sympathetic nerve. The radiofrequency ablation device comprises an ablation electrode capable of partially or wholly winding the renal artery and carrying out radiofrequency ablation operation on the renal artery and an operation mechanism for controlling movement of the ablation electrode and achieving the objective that the electrode winds the renal artery. The radiofrequency ablation device is connected with a radio frequency generator, removes the vagus nerve of the renal artery through radiofrequency ablation, reduces excitability of the renal sympathetic nerve and plays a role of regulating the blood pressure of a refractory hypertensive.

Description

technical field [0001] The invention relates to a medical device, in particular to a radio frequency ablation device, in particular to a radio frequency ablation device for renal arterial sympathetic nerve excitability, which is used to treat intractable hypertension. Background technique [0002] Hypertension is a major risk factor for stroke, coronary heart disease, heart failure, vascular disease, and chronic renal failure. About 1 billion adults worldwide suffer from high blood pressure, of which only 1 / 3 are effectively controlled. Underdiagnosis and poor treatment compliance are among the reasons for the poor efficacy, but a large number of patients cannot be effectively controlled even with the best medical treatment. In fact, it has been confirmed that nearly 20%-30% of patients in clinical trials fail to achieve target blood pressure (even if they have received more than 3 drug combinations), and eventually develop resistant hypertension. [0003] so-called obstin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B18/12
Inventor 周庆亮可大年孟坚宋岩邱芹
Owner BEIJING MED ZENITH MEDICAL SCI CORP LTD
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