Artificial heart valve with scaffold

Abstract

The invention relates to an artificial heart support valve, wherein it comprises tubular mesh support, valve blade, sealing film, impermeable x-ray mark, and flexible coiple ring; the middle part of mesh support is round or cylinder, or arranged with radial protrusion, or arranged with outer annular structure, or arranged with outer free tone, or arranged with radial protrusion and outer free tone. The invention can radial compress to transmit into accurate position via medium device, to be expanded, while the expanded valve will meet the shape of valve, without leakage. The invention can avoid being pushed when the blood refluxes and it is closed.

Description

technical field [0001] The invention relates to a substitute for human tissue, in particular to an artificial heart stent valve. Background technique [0002] The heart is the most important organ of the human body. The heart is divided into two parts, the left and the right, and each part includes the atrium and the ventricle. The left and right atria and right and left ventricles are separated by the atrial and ventricular septum, respectively. There are four heart valves in the heart, namely the tricuspid valve, pulmonary valve, mitral valve and aortic valve. In the human blood circulation mechanism, the four heart valves play a vital role. The hypoxic blood from the systemic circulation mechanism enters the right atrium through the vena cava, and then enters the right ventricle through the tricuspid valve. The contraction of the right ventricle pushes the blood into the pulmonary circulation mechanism through the pulmonary valve, and the oxygen-saturated blood returns ...

AI Technical Summary

Problems solved by technology

[0009] The disadvantages and problems of the balloon-expandable artificial valve are: its diameter is determined by the diameter of the balloon. If the diameter of the artificial valve is not selected at the beginning, or after some physiological changes, such as natural growth, pathological vascular expansion, etc., The caliber of the natural valve may increase, but the caliber of the artificial valve cannot be increased adaptively, and the artificial valve may loosen or slip off, so only secondary balloon re-expansion can be performed

[0015] The disadvantages and problems of the self-expanding artificial heart valve are: the friction between the self-expanding artificial heart valve and the sheath is large, which affects the accurate release of the artificial valve

[0018] 1. The existing interventional artificial stent valve delivery device and the stent valve under radial compression are relatively hard and have poor flexibility. It is not easy to pass through the aortic arch and cannot be aligned with the natural aortic valve orifice.

[0019] 2. Even with the help of X-ray fluoroscopy, the axial upstream and downstream positioning of the interventional artificial stent valve and its delivery device becomes uncertain due to the inaccurate judgment of the anatomical position and the instability of the artificial valve under the impact of blood flow. easy

[0020] 3. The positioning of the rotation direction of the interventional aortic valve artificial stent valve and its delivery device cannot be solved

[0021] 4. Under the highly compressed self-expanding artificial stent valve, the retraction of the sheath will encounter great resistance

[0024] 7. If the aortic valve self-expanding stent valve of Jacques SEGUIN and Philippe BONHOEFFER can be successfully implanted, although the perfusion of the coronary artery will not be affected immediately after the operation, the middle part of the stent will not stick to the vessel wall at the aortic root, so that the blood flow will flow from Flowing through the mesh of the stent, on the one hand, there may be the possibility of thrombus formation; on the other hand, it will affect or hinder the possible diagnosis and treatment of coronary artery intervention in the future

[0032] 10. If the valve leaflet switch touches the metal bracket, it will cause the valve leaflets to wear

[0033] 11. If a large-diameter stent valve is used for fixation, the commissure of the leaflets will bear a lot of stress, resulting in tearing of the commissure of the valve leaflets

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