A positioning device for closing the left atrial appendage by transepicardial ligation under intracardiac assisted positioning

Abstract

The invention discloses a positioning device for closing the left aurcle through epicardium loop ligature under intracardiac assistant positioning. The positioning device comprises a positioning cy linder, wherein one end of the positioning cylinder is closed, the other end of the positioning cylinder is open, a pressurization cavity is formed in the cylinder wall of the positioning cylinder, a pressurization connector communicated with the pressurization cavity is arranged at the closed end of the positioning cylinder, and a pressure regulating valve is arranged on the pressurization connector. According to the positioning device for closing the left aurcle through epicardium loop ligature under intracardiac assistant positioning, through an adsorption hole communicated with a decompression cavity, negative pressure is utilized for fixing the positioning cylinder to the left aurcle of the epicardium, and the left aurcle penetrates through a loop ligature coil in a loop ligature line containing groove and stretches into the positioning cylinder; when the pressurization connector pressurizes the pressurization cavity, a pressurization hole and an inner cavity of the positioning cylinder, the loop ligature coil is tightened along with change in pressure of the pressurization cavity, blood stagnating in the left aurcle is squeezed into the ventriculus sinister through pressure intensity, and the problem that when the left aurcle is blocked, thrombi are formed due to blood stasis and abnormal blood flow in the left aurcle is solved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a positioning device for transepicardial ligation and closure of the left atrial appendage under intracardiac assisted positioning. Background technique [0002] As we all know, atrial fibrillation is the most common clinical arrhythmia, thrombotic stroke is the main complication secondary to atrial fibrillation, and one of the main causes of death and disability; the left atrial appendage is the main site of thrombus in patients with atrial fibrillation [J.L.Blackshear and J.A.Odell,Annals of Thoracic Surgery,61(2):755–759,1996.]; Closure of the left atrial appendage can effectively reduce stroke events in patients with atrial fibrillation; interventional surgery is performed from the vascular puncture guide wire to the heart Interventional therapy or closure, and epicardial ligation to seal the left atrial appendage is obviously performed by exposing the heart through t...

AI Technical Summary

Problems solved by technology

[0002] As we all know, atrial fibrillation is the most common clinical arrhythmia, thrombotic stroke is the main complication secondary to atrial fibrillation, and one of the main causes of death and disability; the left atrial appendage is the main site of thrombus in patients with atrial fibrillation [J.L.Blackshear and J.A.Odell,Annals of Thoracic Surgery,61(2):755–759,1996.]; Closing the left atrial appendage can effectively reduce stroke events in patients with atrial fibrillation; interventional surgery is performed from the vascular puncture guide wire to the heart Interventional treatment or closure, and epicardial banding to seal the left atrial appendage is obviously performed by exposing the heart through thoracotomy. However, regardless of interventional surgery or epicardial banding, there are blood stasis and Thrombus is formed due to abnormal blood flow. For this reason, we propose a positioning device for closing the left atrial appendage by transepicardial ligation under intracardiac assisted positioning.

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