Mechanical heart valve with compressible stiffening ring

Details Mechanical heart valve with compressible stiffening ring Mechanical heart valve with compressible stiffening ring

1993-12-13

1995-03-14

Willse, David H.

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

Heart valve

Having rigid or semirigid pivoting occluder

623900, A61F 224

Patent

active

053973488

ABSTRACT:
A prosthetic mechanical heart valve with an annular valve body and with a suture ring and stiffening ring combination wherein the stiffening ring is compressible before contacting a wall of the valve body. The inside diameter of the stiffening ring is consistently greater than the outside diameter of the annular valve body, forming a gap. This inhibits compressive forces from being transmitted to the annular valve body. The heart valve also has beveled stops or recesses for controlling the opening angle of leaflets mounted in the valve body. Because of the gap between the valve body and the stiffening ring, the body can deform in a spring-like manner, providing a spring-closing action.

REFERENCES:
patent: 3744060 (1973-07-01), Bellhouse et al.
patent: 4197593 (1980-04-01), Kaster et al.
patent: 4535483 (1985-08-01), Klawitter et al.
patent: 4666442 (1987-05-01), Arru et al.
patent: 4790843 (1988-12-01), Carpentier et al.
patent: 4863460 (1989-09-01), Magladry
patent: 5035709 (1991-07-01), Wieting et al.
patent: 5071431 (1991-12-01), Sauter et al.
patent: 5104406 (1992-04-01), Curcio et al.
patent: 5163954 (1992-11-01), Curcio et al.

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