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A kind of mesh basket ablation catheter and ablation device

An ablation catheter and mesh basket technology, applied in the field of ablation, can solve problems such as poor effect, inability to judge the degree of contact between electrodes and tissue, etc., and achieve the effects of convenient use, reduced treatment costs, and strong universality

Active Publication Date: 2019-09-03
SICHUAN JINJIANG ELECTRONICS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the poor effect of targeted superficial ablation existing in the radiofrequency ablation catheter in the prior art, and need to use an additional mapping catheter for mapping before ablation treatment, and cannot judge the affixation of the electrode and the tissue To solve the technical problems of the degree, it is necessary to provide a basket-shaped ablation catheter capable of both deep ablation and targeted superficial ablation with good ablation effect. The basket-shaped ablation catheter is combined with ablation, mapping, stimulation and impedance The detection is integrated, there is no need to use an additional mapping catheter for mapping, the treatment effect is good, the pain of the patient can be relieved and the treatment cost can be reduced, and the safety and reliability are high; in addition, the present invention also provides an ablation catheter comprising the basket ablation device

Method used

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  • A kind of mesh basket ablation catheter and ablation device
  • A kind of mesh basket ablation catheter and ablation device
  • A kind of mesh basket ablation catheter and ablation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A basket-shaped ablation electrode includes a tube body 3 and an electrode part, and the tube body 3 is connected to the proximal end of the electrode part.

[0054] Such as figure 1 , figure 2 and image 3 As shown, the electrode part is in the shape of a basket, and the electrode part includes a pulling wire 1 and a plurality of electrode groups distributed along a circumferential direction of the pulling wire, and the proximal ends of the plurality of electrode groups are connected to the distal end of the tube body 3. connected, the distal ends of multiple electrode groups are connected to the distal end of the pulling wire 1, and the proximal end of the pulling wire 1 is passed inside the tube body 3 and controls the shape of the electrode part; each electrode group includes at least two electrode belts 2, and the electrode belt 2 includes a radio frequency transmitting electrode belt and a radio frequency receiving electrode belt; the distal end of the pulling ...

Embodiment 2

[0066] This embodiment provides a basket-shaped ablation electrode. The structure of the basket-shaped ablation electrode is substantially the same as that of the basket-shaped ablation electrode provided in Example 1. The difference between the two lies in:

[0067] Such as Figure 7 As shown, the above-mentioned first temperature sensor 4 includes a second thermal electrode 7 and a third thermal electrode 8 connected to each other, and the connection point of the second thermal electrode 7 and the third thermal electrode 8 is arranged inside the electrode strip 2; wherein, In this embodiment, the second thermal electrode 7 and the third thermal electrode 8 are constantan wire and copper wire respectively, and there is a large thermal electromotive force between the constantan wire and the copper wire. Such a design can ensure that the first temperature sensor 4 has a high measurement accuracy.

[0068] In addition, in the above-mentioned electrode part, including the first ...

Embodiment 3

[0070] This embodiment provides a basket-shaped ablation electrode. The structure of the basket-shaped ablation electrode is substantially the same as that of the basket-shaped ablation electrode provided in Example 1. The difference between the two lies in:

[0071] Such as Figure 8As shown, the above-mentioned first temperature sensor 4 includes a fourth thermode 9 and a fifth thermode 10, both of which are electrically connected to the inner side of the same electrode strip 2, and the fourth thermode There is a distance between the setting point of the thermode 9 and the setting point of the fifth thermode 10, and the distance is 1-4mm, which not only ensures a relatively large temperature sensing area, but also ensures a relatively good temperature measurement accuracy. If the distance is less than 1 mm, the temperature sensing area is too small to meet the needs of larger lesion tissues. If the distance is greater than 4 mm, the temperature measurement accuracy of the fi...

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Abstract

A basket-type ablation catheter and an ablation device. The basket-type ablation catheter comprises an electrode portion. The electrode portion has a basket shape, and comprises a guidewire (1) and a plurality of electrode sets distributed along the circumference of the guidewire, wherein the electrode set comprises at least two electrode bands (2). The electrode band (2) comprises a radio frequency emitting electrode band and a radio frequency receiving electrode band. The ablation device comprises a radio frequency source and the basket-type ablation catheter. The basket-type ablation catheter and ablation device can implement deep or shallow ablation, achieve good ablation performance, and can ablate different pathogenic parts or pathogenic tissues of different shapes. The invention is highly adaptable, and integrates the functions of ablation, marking, excitation, and resistance measurement within a single device, therefore eliminating a need to use additional marking and measurement catheters for performing marking and measurements, greatly reducing pain experienced by a patient while lowering treatment costs. The invention is safe and offers a high level of reliability.

Description

technical field [0001] The invention relates to the field of ablation, in particular to a basket-shaped ablation catheter and an ablation device. Background technique [0002] In catheter interventional therapy, the electrode of the radiofrequency ablation catheter is attached to the diseased tissue, and the electrode releases radiofrequency energy to form a loop with the back plate, and the Joule heat generated by the ion conduction current in the biological tissue is mediated by the biological tissue in the high-frequency electromagnetic field. The heat generated by the loss of electricity makes the temperature of the diseased tissue rise, because the heat dissipation of the diseased tissue is poor and sensitive to high heat, so as to achieve the purpose of treatment. At present, the conventional multipolar ablation is only the deep ablation of electrode-to-back plate discharge. It is difficult to achieve the ideal ablation effect in the position where targeted superficial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B18/12A61B18/14
Inventor 李楚武邹波朱晓林
Owner SICHUAN JINJIANG ELECTRONICS SCI & TECH CO LTD
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