Myocardial ablation device

Abstract

The invention relates to a myocardial ablation device which can ablate myocardial tissue point by point. The myocardial ablation device includes a handle, an outer sleeve, and a core, wherein the handle includes a housing and is disposed on the proximal side of the myocardial ablation device to accommodate the proximal end of the outer sleeve and the proximal end of the core, wherein a There is a negative pressure suction pipeline, and a negative pressure connection hole is provided on the negative pressure suction pipeline for connecting the vacuum generating device; the outer sleeve has a first hollow pipe and a second hollow pipe, and the proximal end of the first hollow pipe is connected to the negative pressure suction pipe. Pipeline, the far end is provided with a negative pressure suction cup, the negative pressure suction cup includes a side wall and one or more negative pressure suction ports; the core has a third hollow pipe, and the proximal end of the core is provided with a liquid injection pipeline and a liquid injection interface and a movement control part, the distal end has a tip, wherein the liquid injection pipeline communicates with the third hollow pipe and the proximal end of the liquid injection pipeline is a liquid injection interface, and the movement control part is arranged on the core for controlling the core along the outer The second hollow duct of the sleeve moves.

Description

technical field [0001] The present invention relates to a surgical instrument for treating and mapping arrhythmia, in particular to a myocardial ablation device capable of ablation of myocardial tissue point by point, preferably, the myocardial ablation device can also map electrocardiogram point by point Activity. Background technique [0002] Arrhythmia is a series of diseases in which the heart loses its inherent rhythm due to various reasons, and its incidence rate is high and it is extremely harmful to health. For example, the most common persistent arrhythmia in clinical practice is called atrial fibrillation (abbreviated as atrial fibrillation). It is caused by various pathogenic factors that lead to abnormal changes in the electrophysiological properties of atrial myocytes, causing rapid and irregular contractions of the atria and ventricles. As a result, patients will have symptoms such as palpitations, shortness of breath, and fatigue, and increase the incidence o...

AI Technical Summary

Problems solved by technology

[0004] However, the bipolar radiofrequency ablation pen currently used for linear ablation in atrial fibrillation surgery is attached to the epicardium to release radiofrequency energy, and it is difficult to form transmural damage to thicker myocardial tissue, especially for hypertrophic In patients with cardiomyopathy, it is more difficult for these radiofrequency ablation pens to cause damage deep in the ventricular wall, so some atrial fibrillation and most ventricular arrhythmias are less effective for treatment

Moreover, the existing bipolar radiofrequency ablation pen cannot map whether there is still electrical activity or conduction at the ablation site after the ablation is completed, so that the surgical effect cannot be verified during the operation, leaving certain hidden dangers for the recurrence of arrhythmia

In addition, the bipolar radiofrequency ablation pens currently in use are all imported, with complex structures, high cost, and a series of supporting equipment such as radiofrequency energy generators, which makes the surgical treatment of atrial fibrillation expensive, and makes it impossible for some hospitals to carry out this procedure. treat

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