Trileaflet cardiac valve

Abstract

The invention provides a three-lobule heart valve which comprises an annular flap frame that restricts a hole which passes through the flap frame and extends to two ends along the longitudinal direction as well as a first lobule, a second lobule and a third lobule that are arranged in the annular flap frame and do pivotal movement between a closing position and an opening position, wherein, the first lobule, the second lobule and the third lobule are connected with the flap frame by an articulated structure. The three-lobule heart valve reduces the rotation angle of vanes furthest, thereby ensuring the opening and the closing of the heart valve to be rapider and the plugging effect to be better. The lobules take the shape of sector sheets and have a plurality of lateral sides which are mutually matched with the inner surface of the flap frame and the lateral sides of other vanes, thus achieving the purpose that when the vanes are closed, the vanes are mutually meshed.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a low offset prosthetic heart valve suitable for replacing a tricuspid valve or a mitral valve. Background technique [0002] Replacement of damaged heart valves with a hemodynamic prosthesis is the most common treatment for heart diseases and cardiac dysfunctions such as chronic rheumatic valvular heart disease, senile valvular heart disease, which affect various atrioventricular valves, including Right atrioventricular (tricuspid) valve and left atrioventricular (mitral) valve. At present, a variety of tissue structures and prosthetic heart valve structures have been studied. Among them, single-leaflet valves and bi-leaflet valves maintain a high implantation rate in clinical applications due to their long history of research and development and relatively simple structures. Although the existing single-leaflet valve and double-leaflet valve prosthesis have achieved many comm...

AI Technical Summary

Problems solved by technology

Although the research and development of the three-leaf valve has been carried out for a long time, it has been in the development stage due to the instability of its structure.

First of all, the design of the tri-leaflet valve increases the specific gravity of the hinge part, and at the same time, the groove or convex groove of the hinge part will become a potential factor for thrombosis, so designing a suitable hinge part is particularly important in the design of the tri-leaflet valve; In addition, the stability of the hinge part is also very important. The unscientific structure may cause the leaflets to fall off, the leaflets are stuck, etc., resulting in safety hazards

As described in Chinese Patent Application No. 200410092859.6, the hinge contact part of the tri-leaflet valve has an X-shaped blind hole on the valve frame, which is easy to cause blood to gather and form a thrombus

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