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High-voltage-resistant ablation catheter

An ablation catheter and high-pressure-resistant technology, applied in the field of medical devices, can solve the problems of unrealized ablation, discontinuity of ablation lines, and low efficiency of ablation methods, and achieve the effect of improving ablation efficiency

Pending Publication Date: 2021-11-02
APT MEDICAL HUNAN INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The discharge circuit is composed of the ablation energy generator, the head-end electrode, the human body, and the back plate. The ring electrode is only used to record the intracardiac electrical signal, which leads to a single point for each ablation energy. Not only is the ablation method inefficient and time-consuming , it is also easy to form ablation line discontinuity (that is, when ablation is performed on one surface, only the head electrode is involved in traditional ablation, resulting in a certain point on this surface that may not be ablated)

Method used

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  • High-voltage-resistant ablation catheter

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1 , diagram 2-1 As shown, the present invention discloses a high-pressure ablation catheter, including a catheter 1, the distal end of the catheter 1 has a flexible section 11, and a tip electrode 2 is arranged on the distal end of the flexible section 11. 11 is provided with at least one ring electrode 3, and the ring electrode 3 can release an electrical signal simultaneously with the head electrode 2 or separately. The electrical signal can be a radio frequency signal or a pulsed electric field signal, which is not specifically limited here, and only needs to ensure the release The electrical signal can be used for ablation, the first electrode lead 21 of the tip electrode 2 and the second electrode lead 31 of the ring electrode 3 are arranged in the tube body of the catheter 1 to realize the second electrode lead 31 of the ring electrode 3 And between the first electrode leads 21 of the head electrode 2, between the head electrode 2 and the ring ele...

Embodiment 2

[0041] Such as Figure 9 As shown, on the basis of the above-mentioned embodiment 1, the distal end of the catheter 1 is provided with a metal mesh basket 12, the flexible section 11 is wrapped on each arm of the metal mesh basket 12, and the tip electrode 2 is arranged on the metal mesh basket 12. In the free state, the metal mesh basket 12 is expanded, and after being pressed, the metal mesh basket 12 can be contracted.

[0042] In this embodiment, the flexible section 11 can be formed on the arms of the metal mesh basket 12 by heat fusion, or the flexible section 11 can be directly sleeved on each arm.

Embodiment 3

[0044] Such as Figure 8-1 and diagram Figure 8-2 As shown, on the basis of the above-mentioned embodiment 1, the distal end of the catheter 1 is provided with an annular body 7 wound by a memory metal, and the flexible section 11 is wrapped outside the annular body 7, so that the flexible section 11 is in a free state. The bottom is ring or spiral, but this embodiment is not limited thereto, and the ring body 7 can also be made by using the direct flexible segment 11, which can be deformed under the action of external force and can be restored in a free state.

[0045] In this embodiment, the flexible segment 11 as described in Embodiment 2 can also be used to form the flexible segment 11 on the annular body 7 by thermal fusion or directly sleeve the flexible segment 11 on the annular body 7 .

[0046] Such as diagram 2-1 As shown, on the basis of the above-mentioned embodiment, the spacing between the head end electrode 2 and the adjacent ring electrodes 3 and between th...

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Abstract

The invention relates to a high-voltage-resistant ablation catheter, which comprises a catheter body, a flexible section is arranged at the far end of the catheter body, a head end electrode is arranged at the tip of the far end of the flexible section, at least one ring electrode is arranged on the flexible section and / or other catheter body parts, except the flexible section, of the catheter body, and the ring electrode and the head end electrode can release electric signals at the same time or independently. The electrode lead of the head end electrode and the electrode lead of the ring electrode are insulated from each other, and the head end electrode and the ring electrode are insulated from each other. Compared with the prior art, the electrode leads of the head end electrode and the ring electrode are arranged in the catheter body of the catheter, and insulation between the electrode leads and insulation between the head end electrode and the ring electrode are guaranteed, so that the head end electrode and the ring electrode can independently or simultaneously apply high-voltage ablation signals; the multiple electrodes participate in transmission of ablation energy at the same time, and therefore the ablation efficiency is improved.

Description

technical field [0001] The invention relates to a medical device, in particular to a high pressure-resistant ablation catheter. Background technique [0002] Atrial fibrillation is a tachyarrhythmia, and the incidence of atrial fibrillation continues to increase with age, reaching 10% of people over 75 years old. During atrial fibrillation, the frequency of atrial excitation reaches 300-600 beats / min, and the ventricular rate is often fast and irregular, sometimes up to 100-160 beats / min. Effective retraction function. The prevalence of atrial fibrillation is also closely related to diseases such as coronary heart disease, hypertension and heart failure. [0003] The head-end structure of a traditional radiofrequency ablation catheter usually includes a head-end electrode, a ring electrode, and a catheter. Its typical internal structure is that the head-end electrode is fixed on the end of the distal end of the catheter formed of insulating material, and the ring electrod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12A61B18/14
CPCA61B18/12A61B18/1492A61B2018/00577A61B2018/00083A61B2018/00351A61B2018/126A61B2018/00267A61B18/14A61B2018/1467
Inventor 谢敏周拓曹镇财杨洋张效凯
Owner APT MEDICAL HUNAN INC
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