초록 ▼

Heart valve for implantation as a surgical prosthesis including a valve housing having an orifice ring and three pairs of structural short and long projections extending inwardly and centrally within the plane of the orifice ring. A like plurality of leaflet occluders pivot between closed and open p

Heart valve for implantation as a surgical prosthesis including a valve housing having an orifice ring and three pairs of structural short and long projections extending inwardly and centrally within the plane of the orifice ring. A like plurality of leaflet occluders pivot between closed and open positions providing for uniform hemodynamic flow of blood through the heart valve. Each of the leaflet occluders is substantially one-third of a circle and includes on a proximal surface side having inner and outer pivot sockets of oval concentricity. The pivot sockets of each leaflet occluder freely engage about short and long projections extending inwardly from the valve ring and substantially equally spaced within three sectors of the valve orifice. The short and long projections also function as closed position stops and open position stops during symmetrical and synchronous movement of the leaflet occluders.

대표청구항 ▼

Heart valve comprising: a. means for housing in a heart and including an internal orifice for blood flow; b. means projecting inwardly of and spaced about said housing means, said projecting means including a spread plurality of short and long projections; and, c. means for symmetrically and substan

Heart valve comprising: a. means for housing in a heart and including an internal orifice for blood flow; b. means projecting inwardly of and spaced about said housing means, said projecting means including a spread plurality of short and long projections; and, c. means for symmetrically and substantially synchronously moving between occluding and non-occluding positions in said housing means, said occluding means including a like plurality of leaflets including means for freely engaging and moving about each of said plurality of short and long projections, each of said plurality of said short and long projections defines an axis about which each of said leaflets moves between said occluding and non-occluding positions, each of said axes operationally bisects said leaflet asymmetrically and unequally whereby each of said leaflets symmetrically and substantially synchronously moves about a said axis with respect to each other in a predetermined geometrical path thereby providing for distributed blood flow through said housing means.