Importance

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Abstract

Single or double-leaflet heart valves include leaflet valve members which are arcuate in cross section, preferably being essentially a portion of the wall of a circular tube. Generally spherical sectors protrude oppositely from the leaflets and are received in elongated, complementary depressions in the interior wall of the annular valve body at generally diametrically opposite locations. As the leaflets pivot between the open and closed positions, the guides move from one end of the elongated depressions to the other. Eccentric pivot axes provide for quick response of the leaflets, and their arcuate shape coupled with shifting of the axes during pivoting moves the leaflets out of the center of the valve passageway reducing resistance to the free flow of blood.

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First Claim