초록 ▼

A heart valve prosthesis having an annular valve body defining a central passageway which is closed by a pair of pivoting leaflets. Projections extending laterally from each of the leaflets are received in socket means provided at generally diametrically opposite locations in the interior wall of th

A heart valve prosthesis having an annular valve body defining a central passageway which is closed by a pair of pivoting leaflets. Projections extending laterally from each of the leaflets are received in socket means provided at generally diametrically opposite locations in the interior wall of the valve body. Slot portions of the socket means guide the pivotal movement of the leaflets. The pivotal axis of each leaflet is eccentrically located and moves relative to the valve body during opening and closing motion.

대표청구항 ▼

A heart valve prosthesis comprising an annular valve body having a central passageway therethrough, a pair of leaflets which are proportioned to jointly close said passageway, and means mounting said leaflets for substantially pivotal movement between a closed position blocking blood flow through sa

A heart valve prosthesis comprising an annular valve body having a central passageway therethrough, a pair of leaflets which are proportioned to jointly close said passageway, and means mounting said leaflets for substantially pivotal movement between a closed position blocking blood flow through said central passageway and an open position allowing blood flow therethrough, said mounting means including projections extending in opposite directions from the lateral sides of each of said leaflets and generally diametrically opposed slots in said annular valve body wherein each of said projections is respectively disposed, each of said slots extending along a substantially straight line displaced from a plane perpendicular to the centerline of said passageway by an angle of between about 20°and about 40°in a direction outward from the center and upstream of blood flow, said projections having rounded ends and said slots being open at the outward end thereof and curved at the other end with a radius of curvature proportioned to the curvature of said rounded ends, whereby said slots guide the pivotal movement of said leaflets by defining the path along with said projections can travel during opening and closing movement.