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Renal artery radiofrequency ablation catheter

A technology for radiofrequency ablation of renal arteries, applied in the field of medical catheters, can solve problems such as catheter operation and complex structure, and catheters cannot be well adapted to the inner wall of renal arteries with different diameters, so as to avoid blood vessel damage, facilitate industrial manufacturing, and structure simple effect

Active Publication Date: 2015-07-22
SHANGHAI HONGDIAN MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operation and structure of the catheter of this application are relatively complicated
Moreover, the catheter of this application cannot be well adapted to the inner wall of the renal arteries of different diameters, so that the electrodes cannot be adhered to the walls of the renal arteries of different diameters

Method used

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  • Renal artery radiofrequency ablation catheter
  • Renal artery radiofrequency ablation catheter
  • Renal artery radiofrequency ablation catheter

Examples

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Embodiment Construction

[0027] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] For ease of description, the terms "distal end" and "proximal end" are used here, the end near the operating end (ie, the control handle 5) is the proximal end, and the end far away from the operating end is the distal end.

[0029] figure 2 Shown is a schematic diagram of the overall structure of the catheter suitable for renal artery radiofrequency ablation of the present invention. 1 is the main section of the catheter with a length of 90cm; 2 is the bendable section of the catheter with a length of 12mm; 3 is the last straight section with the electrode 4 fixed thereon, with a total length of 7mm; the last straight section is fixed with an electrode 4; the main body of the catheter Section 1 is fixed on the control handle 5, and the control handle 5 is provided with a push button and a chute, and the push button can slide in the c...

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Abstract

A catheter applicable in endovascular radiofrequency ablation in blood vessels such as renal arteries. From the proximal end to the distal end, the catheter comprises: a control handle (5), a main body segment (1), a bendable segment (2), and an electrode (4), where a pull wire (10) runs through the interior of the catheter and is controlled by the control handle (5). The catheter also comprises a straight end-segment (3). The electrode (4) is fixed onto the straight end-segment (3). The pull wire (10) is fixed at one end thereof to the distal end of the straight end-segment (3), while the pull wire (10) is arranged in that, along the axis of the catheter, the pull wire (10) extends on different sides respectively in the straight end-segment (3) and in the bendable segment (2). The catheter allows for adaptation to different renal artery inner diameters, for enhanced wall-attaching effect of the electrode, while the catheter is simple to operate, safe, and reliable for use in sympathetic nerve radiofrequency ablation of the renal arteries.

Description

technical field [0001] The present invention generally relates to a medical catheter, and more particularly relates to a simple, fast and safe catheter suitable for intravascular ablation of renal arteries and the like. Background technique [0002] Hypertension has the characteristics of high incidence, low awareness rate and great harm. "Guidelines for the Prevention and Treatment of Hypertension in China" (Grassroots Edition in 2009) pointed out that there are 10 million new hypertensive patients in China every year, and the number reached 200 million in 2006, of which 20% were patients with resistant hypertension. [0003] Refractory hypertension, also known as refractory hypertension, refers to hypertension that cannot be effectively controlled after treatment with lifestyle modification and 3 or more antihypertensive drugs (including a diuretic). Experimental data have proved that hypertension is related to the high excitability of renal sympathetic nerve in patients....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B18/12
CPCA61B2018/00434A61B2018/00577A61B2017/003A61B2018/00404A61B18/1492A61B2017/00323
Inventor 郭俊敏杨谦谦朱福音张国旺高宾梁波孙毅勇罗七一
Owner SHANGHAI HONGDIAN MEDICAL TECH CO LTD
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