Fixing device for left ventricular aneurysm and system of device

Abstract

The invention relates to a fixing device for a left ventricular aneurysm and a system of the device. The fixing device comprises a skeleton and a film; the skeleton is generally in a rib shape and comprises fix nickel-titanium alloy wires and one steel cap; one end of each nickel-titanium alloy wire is sleeved with the steel cap for fixation, and the other end of each nickel-titanium alloy wire isinclined outward at 30 degrees to form a tip end; the film is generally in an umbrella surface shape and is sewed on the skeleton to cover the skeleton. Compared with current treatment methods, a method involved in the fixing device has the advantages that a wound is small and recovers quickly; since the ventricular aneurysm is fixed, the increased left ventricular size is reduced, and heart functions are directly protected and improved; the bulged ventricular aneurysm is fixed through a minimally invasive combined intervention method, the ventricular aneurysm does not bulge during ventricular systole, the left ventricular size is reduced but is not lower than a normal value, the left ventricular output amount is decreased, and a cardiac ejection function is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a fixation device for left ventricular aneurysm and a system thereof. Background technique [0002] After myocardial infarction, the necrotic myocardium is gradually replaced by fibrous scar tissue, the ventricular wall becomes thinner and bulges outward, forming an aneurysm, increasing the volume of the left ventricle, increasing the preload of the left ventricle, and leading to cardiac insufficiency. Aneurysms most commonly arise in the left ventricle. Medical drug therapy and surgical left ventricular volume reduction are commonly used clinical treatments. Surgical left ventricular volume reduction has a definite curative effect, but the operation is difficult and risky, with high operative mortality and complications, high requirements for the surgeon, and limited clinical application; and internal medicine has poor curative effect. [0003] At present, surgical ane...

AI Technical Summary

Problems solved by technology

[0005] 1. Parachute surgery (parachute technique) may lead to heart rupture, incomplete occlusion of ventricular aneurysm, malignant arrhythmia and sudden cardiac death, etc. It was stopped by the US FDA in 2017 for clinical use

[0006] 2. Minimally invasive combined interventional left ventricular reconstruction - Revivent TC (left ventricular plication) is currently in the clinical trial stage, but it will reduce the volume of the left ventricle and make it lower than the normal value, reduce the amount of blood ejected from the heart, and the heart function cannot be effectively improved

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