초록 ▼

Prosthetic valve means for use in heart surgery includes a retainer ring member designed to be attached to portions of a living heart. Leaflet means are supported for hinging movement in the retainer ring to simulate the movement of heart flaps in a human heart. The retainer ring means has inner per

Prosthetic valve means for use in heart surgery includes a retainer ring member designed to be attached to portions of a living heart. Leaflet means are supported for hinging movement in the retainer ring to simulate the movement of heart flaps in a human heart. The retainer ring means has inner peripheral wall portions removed to form spaced apart apertures in which occur hinging sockets for receiving hinging stud portions of the leaflet means. The spaced apart apertures are further characterized by upper and lower stop edges against which the leaflets may seat in an alternating manner and the stud portions are freely supported in respective sockets to provide for floating a leaflet in the paths of travel of a flow of blood during the systolic and diastolic functioning of a human heart.

대표청구항 ▼

Improved prosthetic valve means for use in cardiovascular surgery including a retainer ring and leaflet members supported in the retainer ring for hinging movement to simulate movement of heart flap members in opening and closing a passageway through the retainer ring for flow of blood, characterize

Improved prosthetic valve means for use in cardiovascular surgery including a retainer ring and leaflet members supported in the retainer ring for hinging movement to simulate movement of heart flap members in opening and closing a passageway through the retainer ring for flow of blood, characterized in that each of the leaflet members includes an arcuate portion occurring in spaced relation to adjacent portions of the retainer ring, hinging studs located at opposite extremities of each of the arcuate portions, seating edges extending inwardly from respective hinging studs in substantially parallel relationship and inner extremities of the leaflet members formed with converging edges which intersect respective seating edges of the leaflets, and said valve means further characterized in that the inner peripheral surface of the retainer ring is constructed with circumferentially spaced apart lobes, each of which has inwardly projecting sides which intersect one another, and each of the lobe sides being recessed to form a hinging aperture defined by vertically and horizontally disposed stop edges which intersect one another substantially at right angles, said stop edges being constructed and arranged to receive the said seating edges thereagainst, each of the hinging apertures being formed at points closely adjacent to points of intersection of the stop edges with hinging stud sockets and each of the said leaflets being formed with medial lines of bending along which the leaflets are expanded to locate the said hinging studs in respective hinging stud sockets and to provide for only hinging studs and seating edges being engageable with the retainer ring.