1983-01-18
1985-01-01
Frinks, Ronald L.
A61F 122
Patent
active
044908598
ABSTRACT:
A bioprosthetic mitral valve replacement comprises a flexible frame (1) having a ring-shaped base (2) and at least a pair of upstanding posts (3), which divide the base into at least two portions (2A, 2B) of varying flexibility, together with animal tissue leaflets (4) each having a periphery consisting of a free portion (4A) extending between the tips (3X) of posts (3) and a fixed portion (4B) secured and sealed to corresponding sides of the posts and the adjacent portion of the base. A bicuspid mitral valve replacement has a pair of posts (3) disposed at opposite ends of a diameter of the undistorted base (2), or displaced therefrom towards the portion (2A) of lesser flexibility to accommodate leaflets (4) of unequal size. The frame (1) is formed of Delrin covered with Dacron cloth, the Delrin having differing thicknesses to either side of the posts (3) which merge into the base (2) by way of a continuous curve (6) on each side. The leaflets (4) are cut from flat sheet in a special way to avoid stress-fixing.
REFERENCES:
patent: 3739402 (1973-06-01), Cooley et al.
patent: 3755823 (1973-09-01), Hancock
patent: 3983581 (1976-10-01), Angell et al.
patent: 4340977 (1982-07-01), Brownlee et al.
Black Martin M.
Drury Philip J.
Frinks Ronald L.
University of Sheffield
LandOfFree
Artificial heart valves does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Artificial heart valves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Artificial heart valves will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-571792