Rapid linear radio-frequency ablation electrode

A radiofrequency ablation, linear technology, applied in the field of medical devices, can solve the problems of inability to ensure the continuity of the ablation line, the inability to isolate the pulmonary vein potential, and the low success rate of atrial fibrillation ablation, so as to reduce the recurrence rate, complete the ablation circle, and facilitate operation Effect

Active Publication Date: 2010-02-17
APT MEDICAL INC
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Problems solved by technology

However, even in some well-known electrophysiological centers in Europe and America, the success rate of atrial fibrillation ablation is still low, and the recurrence rate is as high as 20%-30%
The reason is that the existing ablation catheter is usually a quadrupole ablation catheter, and only the first pole has the ablation function, so it can only be ablated point by point. The surgeon uses the thr

Method used

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Examples

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Embodiment 1

[0054] Example 1: In vitro test, using a piece of fresh beef with a size of 200×200×100mm, one fast linear radiofrequency ablation electrode of the present invention, the diameter of the ablation electrode ring is 15mm, the length of each ablation electrode is 5mm, and the number of electrodes is 3 , The radio frequency instrument is Irvine Biomedical, Inc. IBI-1500T type, and the output parameters of the radio frequency instrument are set as: temperature 60 degrees, time 120 seconds, power 30W. The test is divided into two processes. In the first process, three electrodes are discharged one by one, and each electrode is discharged in turn for 120 seconds, with an interval of 120 seconds, and the power is 30W. After the electrode tube is inserted, push the push rod of the joystick so that the ablation section of the electrode tube extends out of the cannula in an arc shape, so that the ring electrode on the arc ablation section is in close contact with the beef. During the tes...

Embodiment 2

[0056] Embodiment 2: live dog, healthy male dog, weighing more than 20 kg, aged 2 years. One fast linear radiofrequency ablation electrode of the present invention, the diameter of the arcuate electrode tube is 12mm, the length of each ablation electrode is 5mm, the number of electrodes is 2, the radiofrequency instrument is Irvine Biomedical, Inc.IBI-1500T type, and the output parameters of the radiofrequency instrument The settings are: temperature 60 degrees, time 120 seconds, power 30W. The rapid linear ablation catheter of the present utility model enters the left atrium after being punctured through the atrial septum. Under the monitoring of Siemens DSAX rays, the push rod of the control handle is first pushed to make the electrode tube bend and deform. Push the push rod at the far end to push out the ablation section of the electrode tube. The ablation section is in the shape of a bow and ring. Slide the slider on the control handle to deflect the ablation section and r...

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Abstract

The invention discloses a rapid linear radio-frequency ablation electrode, which aims at solving the technical problem of rapid and continuous ablation treatment. In the invention, an electrode tube consists of an ablation section formed by triangular bottom sides and a manipulation section formed by two bevel sides, wherein the ablation section is provided with annular electrodes at intervals; the electrodes are provided with temperature sensors; the annular electrodes is connected with a radio-frequency apparatus through leads and the temperature sensors are connected with the radio-frequency apparatus through temperature sensor leads; a bandlet made of elastic material is arranged in the center of the ablation section; the ablation section formed by the triangular bottom sides is expanded outward to be an arc shape by the bandlet; the length of the bandlet is extended to the junction of two triangular bevel sides; two end parts of the two bevel sides are connected with pull wires; and the other ends of two pull wires are fixed on a control handle. Compared with the prior art, the invention can reliably and continuously carry out vein isolation, reduce the relapse rate of the auricular fibrillation treatment, increase the continuousness of eliminating scar lines compared with single electrode, completely isolate ablation regions, keep ablation rings integral, has convenient operation and ensures that the operation is rapidly completed.

Description

technical field [0001] The invention relates to a medical device, in particular to an ablation electrode guide for treating atrial fibrillation. Background technique [0002] Since the French scholar Haissaguerre found that 90% of atrial fibrillation originated around the pulmonary vein ostium in 1999, catheter radiofrequency ablation for atrial fibrillation has made great progress in recent years, but it also faces many confusions. So far, neither China nor the United States ACC / AHA None of the guidelines for the management of atrial fibrillation made specific recommendations on the methods and procedures of catheter ablation of atrial fibrillation, which reflects that catheter ablation of atrial fibrillation is not yet fully mature. At present, doctors (scholars) use ring-shaped mapping electrodes to map the upper and lower pulmonary vein ostia when performing catheter radiofrequency ablation for atrial fibrillation; use cold saline to infuse the radiofrequency ablation ca...

Claims

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Application Information

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IPC IPC(8): A61B18/14
Inventor 成正辉吴书林韩永贵
Owner APT MEDICAL INC
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