polymer prosthetic aortic valve

Abstract

The invention discloses an artificial polymer aorta valve, belongs to the technical field of medical instruments, and particularly belongs to angiocarpy implantation materials. The artificial polymer aorta valve comprises three valve leaflets and a valve ring. The valve leaflets are fixed to the valve ring, and the valve ring is sutured to the human aortic root in a valve replacement operation. The valve leaflets have the function of controlling blood to move in one direction under the drive of differential pressure. According to the diameter of the aorta valve ring of a patient, the artificial polymer aorta valve of the proper size is selected. The artificial polymer aorta valve has the advantages that the artificial polymer aorta valve is suitable for replacing the human aorta valve; stress borne by the free edges of the valve leaflets, the coaptation area, the connecting positions of the valve leaflets and the aortic root and the middles of the valve leaflets is increased in sequence; the middles of the valve leaflets are thinnest and bear the largest deformation, and therefore the performance of the materials can be achieved fully; the service life of the valve is prolonged in the high circulating bending force bearing environment; the artificial valve is designed according to the anatomical structure of the human aorta valve, and the blood flows through the valve in the excellent hemodynamic environment.

Description

technical field [0001] The invention belongs to the technical field of medical devices, more specifically to cardiovascular implants, in particular to a polymer artificial aortic valve. technical background [0002] For adults with aortic stenosis or regurgitation, treatment options include valve repair and valve replacement. Except for some patients with aortic valve insufficiency who can undergo valve repair, most patients need artificial aortic valve replacement. From the perspective of the types of artificial aortic valves, there are mainly mechanical valves and biological valves. Mechanical valves include cage ball valves, disk valves, and bileaflet valves. The advantage of this type of valve is that it can be used for life without wear and tear and structural damage. The disadvantage is that it requires lifelong anticoagulation therapy. Biological valves include artificial biological valves, homogeneous biological valves and autologous biological valves. The advanta...

AI Technical Summary

Problems solved by technology

However, there are differences in the pressure load and deformation of the free edge of the human aortic valve leaflet, the coaptation area, the middle part of the leaflet, and the connection between the leaflet and the aortic root, and the polymer artificial valve is designed to be of equal thickness, so it cannot give full play. The performance of the material further improves the life of the valve in the environment of high cyclic bending stress; and there is still potential to change the geometry of the polymer artificial aortic valve to improve the hemodynamic environment of blood passing through the valve

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