Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Having rigid or semirigid pivoting occluder
Patent
1986-04-29
1987-04-14
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Having rigid or semirigid pivoting occluder
A61F 224
Patent
active
046575456
ABSTRACT:
A heart valve apparatus includes a circular valve ring having a passageway therethrough and forming a valve seat around the passageway opening. A disk shaped valve element is shaped to cover the valve opening and to seat in the valve seat. The valve ring has a ring link bracket attached thereto, while the valve element has a valve element link bracket attached on one side thereof. A linkage is movably attached between the ring link bracket and the valve element link bracket to thereby allow the valve element to swing open and closed against the valve seat. The valve link has stop elements for preventing the swing of the valve link and the rotation of the valve element thereon. Two attracting permanent magnets are positioned at base of the link and valve ring to hold the valve link and valve element open until a predetermined force from pivoting valve element on the return flow, releases the link from the magnets for closing of the valve.
There are two repelling opposing magnets, one in the valve element, and one in the pivotal stop on the valve link to the valve element. These magnets have like poles facing each other, and repel each other on contact to cushion the pivoting valve element on the opening, and to allow the valve element to open fully perpendicular to valve ring, and to reduce noise, and to give the valve element a nudge into return flow for closing. The forward flow is enough to keep valve element fully open against force of repelling magnets until the reverse flow starts.
REFERENCES:
patent: Re30507 (1981-02-01), Kaster
patent: 1196405 (1916-08-01), Steeg
patent: 3370305 (1968-02-01), Goot
patent: 3476143 (1969-11-01), Kaster
patent: 4417360 (1983-11-01), Moasser
Apley Richard J.
Hobby III William M.
Prizant James
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