COLLAPSIBLE PROSTHETIC VALVE

摘要

A prosthetic valve is provided for implantation in a stenosed aortic valve. The prosthetic valve includes a radially collapsible frame configured for advancement through a patient's vasculature using a catheterization technique. A collapsible valvular structure is sewn to the frame for permitting blood to flow in only one direction. An internal cover extends along an internal surface of the frame. The internal cover forms a tubular sleeve positioned between a lower extremity of the frame and the valvular structure. The internal cover prevents the passage of blood through spaces between bars of the frame. An upper end of the internal cover is sutured to the valvular structure. The internal cover is preferably made of pericardium.

主权项

1. A prosthetic valve for implantation in a native aortic valve, comprising:
a frame comprising a plurality of intersecting wires, the frame having an upper extremity, a lower extremity, an external surface and an internal surface, the frame being compressible to a compressed external diameter suitable for introduction into a femoral artery by a transcutaneous catheterization technique, the frame being expandable for implantation in the native aortic valve; a collapsible valvular structure supported inside the frame, the valvular structure having an open state and a closed state for permitting blood to flow in one direction; and a plurality of elongated struts connected to the valvular structure inside of the frame to induce a patterned movement of the valvular structure between the open state and the closed state, the elongated struts extending lengthwise of the frame in a direction from the lower extremity to the upper extremity.