Mechanical heart valve prosthesis

Details Mechanical heart valve prosthesis Mechanical heart valve prosthesis

1989-09-18

1990-06-19

Cannon, Alan W.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Heart valve

Having rigid or semirigid pivoting occluder

A61F 224

Patent

active

049350307

ABSTRACT:
A mechanical heart valve prosthesis has an annular base which defines a passageway for blood flow, and a pair of valve leaflets hingedly mounted within the annular base for regulating direction of the blood flow. The hinge mechanism includes camming indentations or hinge cavities located substantially in the corners of the valve leaflets at least on one side of each leaflet, and a plurality of camming or hinge pins which protrude radially inwardly from the annular base to engage both sides of the leaflets. Each of the hinge cavities is engaged by one hinge pin. During operation, the valve leaflets undergo certain wobbling or walking motion relative to the hinge pins whereby the hinged surfaces are continuously wiped to minimize the possibility for formation of incipient blood clots.

REFERENCES:
patent: 4078268 (1978-03-01), Possis
patent: 4123805 (1978-11-01), Kramer et al.
patent: 4276658 (1981-07-01), Hanson et al.
patent: 4451937 (1984-06-01), Klawitter
patent: 4535483 (1985-08-01), Klawitter et al.
patent: 4605408 (1986-08-01), Carpentier

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