A prosthetic valve prosthesis with an anchor

Abstract

The present application relates to a prosthetic valve prosthesis with an anchor, includes a bracket body having a passage for supplying blood flow and at least one fixing member, the fixing member isconnected with the bracket body, the fixing member includes a lower extension section and an upper extension section, one end of the lower extension section is connected with the bracket body as a fixed end, the other end of the lower extension extends proximally along the axis of the bracket body, extending distally in the opposite direction after passing through the bent region and connected tothe upper extension. The upper extension section is located on the outer side of the lower extension section, and a leaf receiving cavity is formed between the lower extension section and the upper extension section. The fixing member is further provided with a lamination device, and when the fixing member is completely released, the self-body leaf is stacked in the leaf receiving cavity. The clamping force of the fixation part of the prosthetic valve prosthesis is not influenced by the space between the stent body and the fixation part, and the influence on the blood outflow channel after thestent body is released is greatly reduced.

Description

Technical field: [0001] The invention belongs to the field of medical equipment, and in particular relates to an artificial valve prosthesis with a fixing part. technical background: [0002] The human heart has four chambers and four valves, the mitral valve, tricuspid valve, aortic valve and pulmonary valve. Among them, the mitral valve is located between the left atrium and the left ventricle, and is composed of five parts: leaflets, valve ring, papillary muscles, chordae and junction. The mitral valve acts like a one-way valve. When the heart is diastolic, the mitral valve opens to allow blood to flow from the left atrium into the left ventricle. When the heart is in systole, the mitral valve closes to prevent blood from flowing from the left ventricle of the heart to the left ventricle. Left atrial regurgitation. [0003] According to the latest epidemiological survey data of Western developed countries such as the United States, mitral valve insufficiency (also known...

AI Technical Summary

Problems solved by technology

The problem with the said patent is that even if the natural mitral valve annulus can be well anastomosed and coapted, contacting the mitral valve annulus with the radial expansion of the stent mesh will still cause compression on the surrounding tissues of the mitral valve annulus

At the same time, it can be seen from the accompanying drawings of the embodiments of the patent that the diameter of the valve prosthesis is the diameter of the stent, and the cross-sectional area of ​​the stent is at least the area of ​​the mitral valve annulus. left ventricular outflow tract

Finally, the valve leaflets are sutured on a non-circular stent, and the fitting of the valve leaflets in the non-circular area is bound to be affected, reducing the service life of the valve

[0009] In summary, the clamping force of the fixture in the prior art depends on the size of the space between the fixture and the stent, and the clamping of the valve leaflets can only be completed through the cooperation of the stent body. The valve annulus contacts, and the success rate is low; at the same time, the delivery device must also have a larger caliber to fit into the stent body, and the artificial valve hinders the ventricular outflow tract; the existing stent body has caused damage to the heart's own tissue. Excessive compression, poor leak-proof effect

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