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Variable-diameter spiral multipole ablation catheter

An ablation catheter and spiral technology, applied in the field of medical devices, can solve the problems of unsuitable renal artery branches and large outer diameter, and achieve the effect of effective ablation treatment of high blood pressure

Pending Publication Date: 2019-02-19
白龙腾
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, Medtronic’s Symplicity Spyral multipolar catheter and other multipolar catheters on the market, which are widely used clinically, are designed for renal artery ablation. They have the disadvantage of large outer diameter and are not suitable for smaller renal artery branches.

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  • Variable-diameter spiral multipole ablation catheter
  • Variable-diameter spiral multipole ablation catheter
  • Variable-diameter spiral multipole ablation catheter

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] A multi-electrode ablation catheter, comprising sequentially connected distal section 10, main body middle section 20 and proximal control handle 30, said distal section is in a variable-diameter helical configuration, including a small-diameter helix 101 far away from the main body middle section 20 and close to the main body middle section 20 The large-diameter helix 102; the small-diameter helix 101 has a smaller outer diameter, and a plurality of electrodes for ablation are arranged on it, and the variable-diameter helix configuration of the distal section 10 is suitable for smaller inner diameter renal artery branches ablation; the large-diameter helix 102 has a larger outer meridian, and is suitable for effective ablation of a larger renal artery.

[0036] Multiple electrodes for ablation are arranged on the variable-diam...

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Abstract

The invention provides a variable-diameter spiral multipole ablation catheter. The variable-diameter spiral multipole ablation catheter comprises a far segment, a main middle segment and a near segment control handle which are connected in sequence. The far segment is of a variable-diameter screw configuration capable of reversibly stretching into a small size. The variable-diameter screw comprises a small-diameter screw body and a large-diameter screw body, and the small-diameter screw body has a small outer diameter and is suitable for ablation of a small-inner-diameter renal artery branch.The large-diameter screw body has a large outer diameter, and is suitable for effective ablation of the large renal artery. A plurality electrodes for ablation are arranged on each screw body, and one-time full-circumferential ablation of the renal artery is formed by adjusting distribution of the electrodes on the screw bodies. According to the variable-diameter spiral multipole ablation catheter, the single catheter meets ablation of the renal artery branch and the renal artery at the same time, perfect combination of the ablation electrodes and the blood vessel is achieved conveniently andeffectively, ablation energy is effectively transferred into ablation tissue, and therefore signal transmission fibers are effectively interdicted, and the aim of safely, conveniently and effectivelytreating high blood pressure through renal artery ablation is achieved.

Description

technical field [0001] The invention belongs to the field of medical devices, and relates to a variable-diameter spiral multipolar ablation catheter, which is used for performing multi-electrode discharge ablation on a target site in a human body vessel, and particularly relates to a catheter that can be used for renal artery denervation to treat hypertension and cardiac radiofrequency ablation and other ablation variable-diameter helical multipolar ablation catheters. Background technique [0002] There are now about 1 billion hypertensive patients in the world, one in every three adults, and it may reach 1.6 billion by 2020. Hypertension increases the risk of stroke, cardiovascular events, heart failure, and renal failure. The awareness rate, treatment rate and control rate of hypertension are not ideal. About 10%-20% of essential hypertension is refractory hypertension, according to the European Society of Hypertension (ESH) / European Society of Cardiology (ESC) and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12A61B18/14
CPCA61B18/12A61B18/14A61B2018/00345
Inventor 白龙腾
Owner 白龙腾
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