Left ventricle auxiliary device

Abstract

The invention discloses a left ventricle auxiliary device. The left ventricle auxiliary device comprises an outer tube, a ventricle side suction component and a discharging section sacculus tube, wherein the outer tube comprises a ventricle section located in the left ventricle and an artery section located in the aorta, first suction meshes are formed in the ventricle section, first discharge meshes are formed in the artery section, and the outer tube is communicated with an external driving device; the ventricle side suction component is arranged in the ventricle section; the two ends of the discharging section sacculus tube are sealed and fixed to the outer wall of the artery section in a sleeved mode, and second discharge meshes are formed in the discharging section sacculus tube, are staggered with the first discharge meshes in position and do not overlap with the first discharge meshes. According to the left ventricle auxiliary device, through suction and pressing of the external driving device, blood is sucked into the outer tube from the left ventricle through the ventricle side suction component, the blood is discharged from the outer tube to the aorta through the discharging section sacculus tube to achieve one cycle, and the blood in the left ventricle is pumped into the aorta. The left ventricle auxiliary device is simple in structure and high in reliability and does not destroy blood cells, and wounds of the body tissues are small.

Description

technical field [0001] The invention relates to the technical field of interventional medical devices, in particular to a left ventricular assist device. Background technique [0002] In recent years, the incidence of cardiovascular disease has increased. According to the research of the World Health Organization, at present, cardiovascular diseases account for about 30% of all diseases, and it is estimated that cardiovascular diseases will account for 40% of all diseases in 2020. Among them, most diseases will eventually affect the left ventricular function and cause left ventricular failure. , Cardiogenic shock and other left ventricular function diseases. [0003] For left ventricular dysfunction, scholars at home and abroad have proposed new methods. Left ventricular assist devices (LVAD) are aimed at patients with left ventricular dysfunction, draining blood from the left ventricle to the aorta to provide circulatory support . LVAD can be divided into implantation ty...

AI Technical Summary

Problems solved by technology

The Ecmo system is to implant two catheters in the aorta and the main vein respectively. The catheter in the main vein is connected to an external artificial lung, and the external artificial lung is connected to an axial flow pump or a pulsating pump, and then connected to a catheter in the aorta. The disadvantages are The establishment requires an external artificial lung, the structure is complex, the pulmonary circulation is interrupted, it is easy to cause thrombosis in the pulmonary blood vessels, and it is easy to cause massive bleeding

Intra-aortic balloon counterpulsation involves inserting a long balloon in the aorta. The balloon inflates and deflates with the beating of the heart to enhance blood supply to the myocardium. The disadvantage is that it depends on the function of the ventricle and the work is unstable.

The Tandem Heart system is composed of an inflow tube punctured through the femoral vein to the left atrium, an extracorporeal central pump, and an outflow tube punctured through the femoral artery into the left ventricle to establish a drainage channel from the left atrium to the femoral artery. Complicated, requiring atrial septal puncture

The Impella system is composed of a catheter punctured into the left ventricle through the femoral artery. There is a cage-shaped blood inflow inlet at the front end of the catheter, an outflow outlet in the ascending aorta, and an axial flow pump between the inflow inlet and the outflow outlet to drain blood from the left ventricle. To the aorta, the disadvantage is that the flow rate depends on the speed of the pump, and turning the blades at high speed may damage red blood cells, etc.

[0006] In summary, on the premise of completing the left ventricular assist function, how to solve the problems of the existing left ventricular assist device, such as complex structure and operation, unstable operation, and large trauma to human tissue cells, has become an urgent problem for those skilled in the art. The problem

Images