Method and apparatus for replacing a mitral valve with a stentless bioprosthetic valve having chordae

摘要

A stentless bioprosthetic valve includes at least one piece of biocompatible material comprising a bi-leaflet conduit having a proximal end and a distal end. The proximal end defines a first annulus for suturing to the valve annulus in the heart. The conduit includes first and second leaflets that mimic the native anterior and posterior leaflets and extend between the ends of the conduit. The distal end defines a second annulus at which the first and second leaflets terminate. The conduit further includes first and second pairs of prosthetic chordae projecting from the leaflets at the second annulus. Each of the prosthetic chordae comprises a solid uninterrupted extension of the piece of biocompatible material. One of the first pair of prosthetic chordae extends from the first leaflet and has a distal end for suturing to one of the two papillary muscles and the other of the first pair of prosthetic chordae extends from the first leaflet and has a distal end for suturing to the other of the two papillary muscles. One of the second pair of prosthetic chordae extends from the second leaflet and has a distal end for suturing to one of the two papillary muscles and the other of the second pair of prosthetic chordae extends from the second leaflet and has a distal end for suturing to the other of the two papillary muscles. A method for replacing the native mitral valve with a stentless bioprosthetic valve is also provided.