Electrical cardioversion electrode catheter in single-catheter low-energy cardiac chamber

Abstract

The invention relates to an electrical cardioversion electrode catheter in a single-catheter low-energy cardiac chamber. The electrode catheter is composed of an electrode part, a catheter body, an operating handle and electrode buttcock lines; one end of the catheter body is connected with the electrode part; the electrode part is branched into two electrode catheters; the two electrode catheters are respectively provided with an electrode; the other end of the catheter body is connected with the operating handle; each electrode in the two electrode catheters is connected with one of the electrode buttcock lines; and the electrode buttcock lines are penetrated from the operating handle and the catheter body and stretched out of the tail end of the operating handle and then connected with a low-energy implantable cardioverter defibrillator. The electrical cardioversion electrode catheter in the single-catheter low-energy cardiac chamber, related by the invention, has the advantages that the structure of one catheter is low in cost and good in maneuverability; the electrode catheters are put in the cardiac chamber and arranged near a right atrium crista terminalis and a left ventricular free wall and are simple and convenient to operate; the electrode catheters are covered on the left and the right atriums and can be applied to electrophysiological examination and diagnosis of arrhythmogenic mechanisms and temporary cardiac pacing; and an electric field is formed between two electrodes and covered on the left and the right atriums in a biggest range so as to further reduce energy needed by cardioversion and bring a stable cardioversion effect.

Description

technical field [0001] The invention relates to a medical device, in particular to a single-catheter low-energy intracardiac cardioversion electrode catheter. Background technique [0002] Electrical cardioversion refers to the use of high-energy direct current pulses for synchronous discharge to terminate tachyarrhythmia and restore sinus rhythm (such as asynchronous discharge, called defibrillation). The basic principle is to instantly pass high-energy electric pulses to the myocardium, forcing the myocardium to depolarize simultaneously and enter the refractory period, and then the sinoatrial node with the highest self-discipline is the first to wake up, regain control of the entire heart activity and restore sinus rhythm. [0003] In 1961, Lown reported for the first time that direct current was used to convert ventricular tachycardia successfully. Electric cardioversion is widely used and is an effective method to terminate tachyarrhythmia. According to the registratio...

AI Technical Summary

Problems solved by technology

Its disadvantages are that ① general anesthesia is required, breathing is suppressed, and it is very painful; ② electrical injuries and skin burns are common; ③ pain in the chest and limbs, and occasionally pulmonary edema; ④ fever, blood pressure drops, and myocardial enzymes increase; ⑤ Induce new arrhythmias and peripheral arterial embolism; ⑥If the patient is obese, with thick chest wall or emphysema, the cardioversion and defibrillation threshold is high, and the energy required increases, and external cardioversion is often difficult to succeed

But its shortcomings are: ①This technology needs to be improved to make the configuration and placement of the electrode catheter more reasonable; ②It is mainly suitable for atrial fibrillation and atrial flutter.

At present, there is also a case report of transvenous intracardiac cardioversion for ventricular tachycardia, but there is no mature experience; ③At present, a small amount of clinical application in foreign countries, domestic reports are few, and it has not been promoted; ④Requires two-branch cardioversion Defibrillation lead, more expensive

Images