| 摘要 |
The invention relates to medical technology and can be used in cardiac surgery to replace damaged natural mitral and tricuspid valves of a human heart. The proposed invention aims to reduce the risk of damage to the ventricular myocardium during implantation of a heart valve prosthesis, to reduce the risk of harm to a patient during the reimplantation of a biological prosthesis, and to extend the operating life of a heart valve prosthesis. The reduction in the risk of harm to a patient is achieved by decreasing the dimensions of the interposition of a prosthesis in a ventricle. The heart valve prosthesis contains a stent (1) made of metal and having a base (2) facing the forward blood flow (I), a top (3) facing the reverse blood flow (II), a blocking element in the form of flexible leaflets (4) made of xenopericardium, a cuff (5) having a mounting surface (6) which comes into contact with heart tissue (III), and an external surface (7) which comes into contact with the blood flow (II). The prosthesis is equipped with an annular sheath (8), the base (9) of which is hermetically connected to the base (2) of the stent (1), part of the lateral external surface (11) of the sheath (8) is hermetically connected along the perimeter thereof to the cuff (5), and the leaflets (4) are affixed to the lateral internal surface (10) of the sheath (8). |
