Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Having rigid or semirigid pivoting occluder
Patent
1990-11-07
1991-12-10
Pellegrino, Stephen C.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Having rigid or semirigid pivoting occluder
623900, A61F 200
Patent
active
050714317
ABSTRACT:
A suture ring for a mechanical heart valve comprised of essentially three parts: a stiffening ring which fits over an outer surface of the heart valve; a knit fabric sewing cuff attached to the stiffening ring, and a locking ring for securing the stiffening ring to the heart valve. The preferred embodiment comprises a locking ring which is generally crescent-shaped in cross-section and has a split ring configuration. Radial expansion or contraction is a first mode of deformation for the locking ring. The stiffening ring and the valve body can be locked together because the locking ring is capable of deforming in a second mode with respect to thickness of the ring. In the case of the preferred embodiment, the locking ring deforms by a slight flattening of the cresent cross-section of the ring.
REFERENCES:
patent: 3491376 (1970-01-01), Shiley
patent: 3824629 (1974-07-01), Shiley
patent: 4363142 (1982-12-01), Meyer
patent: 4535483 (1985-08-01), Klawitter et al.
patent: 4743253 (1988-05-01), Magladry
patent: 4863460 (1989-09-01), Magladry
Campbell Louis A.
Poehlmann Jeffrey L.
Sauter Joseph A.
Carbomedics Inc.
Jackson Gary
Merkling John R.
Pellegrino Stephen C.
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