Bileaflet valve with improved pivot

Details Bileaflet valve with improved pivot Bileaflet valve with improved pivot

A - Human Necessities

61

F

3/117

A61F 2/24 (2006.01)

Patent

CA 1154903

ABSTRACT OF THE DISCLOSURE A bi-leaflet heart valve wherein two complementary leaflets open and close a passageway of generally circular cross section through an annular valve body. Each of the leaflets is pivoted by interengaging means at opposite locations on the annular valve body. The valve body is provided with arcuate seat means having a downstream facing surface, and the leaflets are formed with a major arcuate edge which seals against the interior surface of the valve body and with a planar minor edge. In the closed position, the upstream surface of the leaflets lies in abutting contact with the downstream surface of the seat, and the planar surfaces abut each other along a plane diametric of the passageway, thus positively closing the center. The proportioning of the leaflets and the location of the seats are such that the load on the interengaging means is relieved in the closed position, wherein the load is supported primarily by the contact between the leaflets and the seat.

355273

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