Irrigated radiofrequency ablation catheter

A radiofrequency ablation and perfusion technology, which is applied in the direction of heating surgical instruments, etc., can solve problems such as unsatisfactory cooling effect

Active Publication Date: 2011-12-07
SYNAPTIC MEDICAL (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The cooling effect of the existing perfus

Method used

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  • Irrigated radiofrequency ablation catheter
  • Irrigated radiofrequency ablation catheter
  • Irrigated radiofrequency ablation catheter

Examples

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Embodiment Construction

[0026] The technical solution of the present invention will be further described in detail through the following examples in conjunction with the accompanying drawings, but the present invention is not limited to the following examples.

[0027] figure 1 Shown is a schematic structural view of a preferred perfusion radiofrequency ablation catheter 10 of the present invention, including a catheter body 12 having a distal end and a proximal end, an ablation portion 13 is provided at the distal end of the catheter body 12, and The proximal end of the catheter body 12 is provided with a control handle 11 .

[0028] figure 2 Shown is a cross-sectional view of the catheter body 12 according to a preferred embodiment of the present invention, showing the connection relationship between the catheter body 12 and the ablation part 13 . The catheter body 12 includes a reinforcing tube 22 and a main body tube 28 sleeved outside it. The main body tube 28 can be made of a biocompatible p...

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Abstract

The invention discloses a perfusion radiofrequency ablation catheter, which comprises a catheter body, the catheter body has a distal end, a proximal end and a central cavity, an ablation part is fixed at the distal end of the catheter body, and an ablation part is fixed at the proximal end of the catheter body. A control handle is fixed; the ablation part includes an elastic head-end tube, the elastic head-end tube has a distal end, a proximal end and at least one cavity, and an ablation electrode is arranged at the distal end of the elastic head-end tube; The ablation electrode includes an electrode housing, which includes at least one cavity, and the ablation electrode is provided with a small hole; the perfusion liquid can flow into the cavity of the ablation electrode through the pipeline, and flow out from the small hole; The effective total area of ​​the small holes is smaller than the effective cross-sectional area of ​​the pipeline. The perfusion radiofrequency ablation catheter of the present invention effectively reduces the chance of blood coagulation and improves the cooling effect.

Description

technical field [0001] The invention relates to a radio frequency ablation catheter, in particular to a perfusion type radio frequency ablation catheter. Background technique [0002] Electrophysiological electrode catheters (hereinafter referred to as electrode catheters) have been widely used in medical practice. They are mainly used to record electrophysiological signals from various parts of the heart and electrically stimulate the heart, so as to achieve heart disease mapping and treatment. the goal of. The method of use is to firstly puncture the femoral vein or internal jugular vein, and under X-ray fluoroscopy, send the electrode catheter along the vessel lumen to different positions in the heart for electrophysiological examination, mapping or radiofrequency ablation of the heart. [0003] In the general radiofrequency ablation process, the temperature of the ablation electrode part of the catheter continues to rise, which will cause the blood around it to coagulat...

Claims

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Application Information

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IPC IPC(8): A61B18/12
Inventor 郑江山华新冯骥
Owner SYNAPTIC MEDICAL (BEIJING) CO LTD
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