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Radio frequency ablation catheter and system

A technology for ablation catheters and catheters, applied in the field of catheters with heating ablation coils and their systems, can solve problems such as structural design and technical difficulties of thermal ablation components and sensors, achieve good sealing and human body compatibility, and improve safety and effectiveness performance, system safety and reliability

Active Publication Date: 2022-02-08
上海玮琅医疗科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of space scale, the structural design and realization process of thermal ablation components and sensors are relatively difficult

Method used

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  • Radio frequency ablation catheter and system
  • Radio frequency ablation catheter and system
  • Radio frequency ablation catheter and system

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention.

[0033] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] Such as Figure 1-2 As shown, an ablation catheter with an ablation coil, the inside of the catheter 101 is a guide wire tube 201, the main tube 202 and the guide wire tube 201 are bonded at the distal end to form a hemispherical smooth end, and the coil sleeve 205 is sleeved on the main tube 202 , the insulating outer sleeve 204 is thermally shrunk outside the coil, and a sealing sleeve is provided, and the sealing sleeve 203 is thermally shrunk ...

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Abstract

The invention relates to a radio frequency ablation catheter and system. The radiofrequency ablation catheter comprises an ablation catheter body with an ablation coil, the ablation catheter body comprises a catheter body, and the catheter body sequentially comprises a guide wire tube, a main body tube, a coil sleeve, a coil and an insulating outer sleeve from inside to outside; and the guide wire tube is arranged in the catheter body, the main body tube and the guide wire tube are bonded at the far end to form a hemispherical smooth end part, the coil sleeve sleeves the main body tube, the insulating outer sleeve is thermally shrunk outside the coil, and sealing sleeves are further arranged and thermally shrunk at two ends of the insulating outer sleeve. A gap for placing a thermocouple is formed in the coil formed by winding an ablation line. The catheter structure has high sealing safety, and the temperature measurement accuracy is remarkably improved. In addition, the coil is arranged to be multiple sections, each section of coil is provided with at least one thermocouple used for segmented temperature control, and the temperature control accuracy and the radiofrequency ablation efficiency are improved. The invention also provides a wiring mode of a plurality of coils, so that the product is safe and effective.

Description

technical field [0001] The invention relates to a radiofrequency ablation catheter and a system, in particular to a catheter with a heating ablation coil and a system thereof. Background technique [0002] Varicose veins are the most common diseases of the venous system. Compared with traditional injection of sclerosing agents and surgical stripping, radiofrequency ablation catheters have better efficacy and lower recurrence rate in the treatment of varicose veins. [0003] Radiofrequency ablation catheter therapy mainly transmits power through a radio frequency generator and a dedicated catheter, and generates heat to cause hyperthermia in the local tissue in contact with the catheter, thereby closing the blood vessel. When the radiofrequency catheter reaches the junction of the saphenous-femoral vein, heat energy is generated to contract the venous wall, causing collagen fibers to shrink, thereby thickening the venous wall, shrinking the lumen, and rapidly forming fibrous ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12A61B18/14
CPCA61B18/12A61B18/14A61B2018/00404A61B2018/00577A61B2018/00714A61B2018/00821A61B2018/00797
Inventor 王坤周而辰李志刚王国辉
Owner 上海玮琅医疗科技有限公司
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