STENT OF AORTIC VALVE IMPLANTED TRANSCATHETERLY

摘要

The invention describes a stent of the aortic valve which is self-expandable and also repositionable and preferably made from nitinol. It consists of two parts: the upper part and the lower part. The lower part is a mesh (1) laid out so that it creates a kind of cylinder wall on the entire height of the element. Also other shape of the mesh is acceptable, for example partially conical, or partially resembling flattened side wall of the cylinder. However, the upper part of the stent consists of derived from the mesh (1) upwards and arranged at equal intervals three arms (2) the height of which is slightly larger than the height of the mesh (1), a bit less than the height of the mesh (1) or equal to its height. The stent arms (2) are shaped in such a way that they form together a kind of an oval chalice bowl, and their end, peripheral part is preferably straight and also inclined to the middle. Space between the arms (2) always ensures free access to patient's coronary arteries. At the end of each of the arms (2) is an upper tag (3) of the valve and each upper tag (3) has its corresponding lower tag (8) located at the bottom of the mesh (1) which is on the opposite side and below a given arm (2). The lower valve tag (8) enables precise implantation of the stent according to scheduled plan.