Radiofrequency ablation catheter passing through coronary vein system

Abstract

The invention relates to a radiofrequency ablation catheter passing through a coronary vein system. The radiofrequency ablation catheter comprises an ablation plug, a first catheter body, a second catheter body, a water injection pipe, a water path connector, a control handle, a ring electrode, an ablation electrode and traction fiber; the ablation plug is connected with the control handle, the first catheter body is communicated with the second catheter body, the rear end is connected with the control handle, the catheter diameter of the second catheter body is smaller than that of the first catheter body, and the ablation electrode and the ring electrode are arranged at the front end of the second catheter body from front to back; the ablation electrode is in a spiral shape, and perfusion micro holes are formed in the positions, corresponding to spiral gaps of the ablation electrode, of the wall of the second catheter body; the rear end of the water injection pipe is connected with the water path connector, and the front end of the water injection pipe is communicated with the perfusion micro holes; a guide wire is arranged at the front end of the second catheter body, the front end of the guide wire is matched with coronary vein branches, a manipulating head is arranged at the front end of the guide wire, the front end of the traction fiber is connected with the manipulating head, and the rear end of the traction fiber is connected with the control handle. The radiofrequency ablation catheter enters the coronary vein branches easily, ablates the large-range epicardium region, carries out saline-cooled irrigation, and ablation effectiveness and safety are improved.

Description

technical field [0001] The invention belongs to the technical field of coronary vein ablation, in particular to a radiofrequency ablation catheter for the coronary vein system. Background technique [0002] Radiofrequency ablation of cardiac arrhythmias can generally be successfully ablated in the endocardium, but there are still some ventricular arrhythmias or accessory pathways originating in the epicardium, which need to be ablated via pericardial puncture or coronary vein ablation. The transcoronary approach often has a failure rate of more than 25% due to the difficulty in placing the ablation catheter in place, while the transpericardial approach is more difficult and may cause serious complications or even death, which places high demands on the operator. There are currently no dedicated coronary vein ablation catheters. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a radiofrequency ablation catheter th...

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Problems solved by technology

There are currently no dedicated coronary vein ablation catheters

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