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Ablation catheter

A technology for ablation of catheters and outer tubes, applied in catheters, heating surgical instruments, etc., can solve problems such as increased thrombosis risk, vasospasm, temperature rise, etc., to reduce the probability of thrombosis, reliable cooling, and eliminate uncertainty. Effect

Active Publication Date: 2018-07-20
LIFETECH SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the pumping function of the heart is periodic, and the blood flow of the renal artery decreases during the heart return period. At this time, the cooling effect of the blood flow to the electrode will be reduced, and the surface temperature of the electrode will rise, increasing the risk of blood coagulation on the electrode surface to form a thrombus, or cause vasospasm

Method used

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  • Ablation catheter
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Embodiment Construction

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, many specific details are explained in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation disclosed below.

[0030] It should be noted that in the interventional field, the end closer to the operator is usually called the proximal end, and the end farther from the operator is called the distal end.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the sa...

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Abstract

The invention provides an ablation catheter, comprising: an ablation component, comprising a flexible outer tube, a support tube nested in the flexible outer tube, a wire guide tube passing through the flexible outer tube, and at least one electrode arranged on the outer wall of the flexible outer tube, wherein the support tube can switch between an expansion form and a low profile delivery form and is provided with at least one slot communicated with a tube cavity thereof, the flexible outer tube is provided with at least one filler orifice communicated with the outer wall thereof, the filler orifice is communicated with at least one slot, and the far end of the flexible outer tube is closed; and a filler tube communicated with the tube cavity of the support tube.

Description

Technical field [0001] The invention relates to the field of medical devices, and in particular to an ablation catheter. Background technique [0002] Hypertension is a common chronic disease. In its formation mechanism, the Renin-Angiotensin Aldosterone System (RAAS) plays a key role as an important blood pressure control system. RAAS maintains the balance of body water, electrolytes and blood pressure by regulating the heart, blood vessels and kidneys. Studies have confirmed that RAAS can cause hypertension through the following three pathways: (1) RAAS activation causes sodium retention; (2) RAAS activation can increase the activity of the sympathetic nervous system; (3) RAAS activation can directly contract blood vessels. Among them, the renal artery sympathetic nerve plays a decisive role in inducing and maintaining systemic hypertension, and its overactiveness makes it difficult to lower the blood pressure of hypertensive patients. [0003] Transcatheter renal artery sympat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B18/12A61M25/00
Inventor 刘鹏曾莉群陈文俊庄少春何学
Owner LIFETECH SCI (SHENZHEN) CO LTD