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Sympathetic nerve denervation ablation catheter system for kidneys

A technology for ablating catheters and sympathetic nerves, applied in the field of medical devices, can solve the problems of easy movement of radiofrequency ablation electrodes, patient damage, and excessive ablation range, so as to avoid the risk of secondary surgery, prevent unnecessary damage, and shorten ablation. effect of time

Inactive Publication Date: 2013-01-23
THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the problem that the ablation catheter of Ardian Company cannot perform multi-point ablation, US 2012 / 0116392 A1, US 2012 / 0029510 A1, CN 201110117776.8, CN201110327772.2 achieve multi-point simultaneous ablation by setting radio frequency ablation electrodes on multiple electrode rods respectively The purpose of CN 102198015A is to realize multi-point simultaneous ablation by installing multiple radio-frequency electrodes on a spiral electrode rod according to predetermined positions. The ablation electrode is not tightly attached to the blood vessel wall, which makes the radio frequency ablation electrode easy to move during ablation, resulting in too large ablation range and causing unnecessary damage to the patient; in order to make multiple radio frequency ablation electrodes closely adhere to the blood vessel wall at the same time, US 2012 / 0101413A1 adopts the scheme of setting an expansion balloon in the spiral electrode rod. By filling the balloon with liquid, the radiofrequency ablation electrode can be closely attached to the blood vessel wall, but the renal blood flow will be blocked when the balloon is expanded. If the ablation time is long, it will easily lead to renal ischemia and unnecessary complications; in order to avoid renal blood flow being blocked, US 2012 / 0029512 A1 replaces the balloon with a wire tennis ball, although it solves the problem of renal blood flow The problem of being blocked, but the operation is far less convenient than the balloon; in addition, the course of the human renal artery varies greatly, and the above-mentioned design schemes of multiple radiofrequency ablation electrodes are difficult to apply when the course of the renal artery varies, thus limiting the People who are treated with sympathetic nerves; and because the above-mentioned design schemes of multiple radiofrequency ablation electrodes are only for radiofrequency ablation, it is difficult to popularize the same design for laser ablation, microwave ablation, etc.
Secondly, Ardian's single radio frequency lead catheter and the guidance control of the above-mentioned multiple radio frequency ablation lead catheters are not accurate enough, which makes the applicable population small, so it cannot well meet the clinical requirements.
Thirdly, it is difficult to monitor the ablation effect in real time for Ardian’s single radiofrequency electrode catheter and the above-mentioned multiple radiofrequency ablation electrode catheters, so it is difficult to detect the curative effect during the operation, which increases the risk of secondary surgery for patients
The previous ablation catheters were mainly controlled by a wire-controlled structure, but the wire-controlled structure was not easy to operate and the structure was relatively complicated. The present invention provides a catheter control system with a simpler structure

Method used

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  • Sympathetic nerve denervation ablation catheter system for kidneys
  • Sympathetic nerve denervation ablation catheter system for kidneys
  • Sympathetic nerve denervation ablation catheter system for kidneys

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Embodiment Construction

[0073] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments. These examples should be understood as only for illustrating the present invention but not for limiting the protection scope of the present invention. After reading the contents of the present invention, skilled persons can make various improvements or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

[0074] figure 1 The main components of an embodiment of the invention are shown. Such as figure 1 As shown, this renal denervation ablation system is mainly composed of an ablation catheter 1, a guiding catheter 7, a control handle 2, and an ablation generating device 3, and the guiding catheter control handle 27 may or may not be provided according to the situation. Such as figure 1 As shown, the distal end (head end) of the ablati...

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Abstract

The invention discloses a sympathetic nerve denervation ablation catheter system inside arteria renalis. The system comprises an ablation catheter, a guide catheter, a control handle, an ablation generator and a guide catheter control handle which can be arranged optionally. The ablation catheter comprises a catheter section and an ablation section from the near end to the far end in sequence, wherein the front end of the catheter body further comprises a controllable bending section and is connected with the control handle by the catheter body; and the ablation section comprises at least two independent structures, wherein an ablation head is arranged on at least one independent structure. With the adoption of the sympathetic nerve denervation ablation catheter system, multi-point ablation can be simultaneously achieved, so that the ablation effect is monitored during an operation in real time and mechanical stability is better.

Description

technical field [0001] The invention relates to a medical device, in particular to an ablation catheter system for treating hypertension and entering into the renal artery to block the renal sympathetic nerve. Background technique [0002] Hypertension is a common clinical disease and frequently-occurring disease. According to the latest data, the number of hypertensive patients in China has exceeded 200 million, and the number of patients is increasing year by year, and the age of onset is gradually advancing. Heart, brain, kidney and other important organ complications caused by high blood pressure have a high mortality rate and disability rate, which seriously endanger human health. There are about 30 to 40 million patients with resistant hypertension in my country. In the future, with the aging of the population and the increase in obesity and diabetes, the number of patients with resistant hypertension will further increase, which will bring great benefits to society, f...

Claims

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Application Information

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IPC IPC(8): A61B18/12A61B18/08A61B18/02A61B18/24A61B18/18A61N7/02
Inventor 杨攀钟理宋治远廖新华仝识非舒茂琴
Owner THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
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