Bioprosthetic heart valve with semi-permeable commissure posts a

Details Bioprosthetic heart valve with semi-permeable commissure posts a Bioprosthetic heart valve with semi-permeable commissure posts a

1991-05-06

1992-09-15

Green, Randall L.

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

Heart valve

Having rigid or semirigid pivoting occluder

623900, A61F 224

Patent

active

051473917

ABSTRACT:
A bioprosthetic heart valve comprising leaflets with free edges which do not impinge on adjacent leaflets when the leaflets are closed before being implanted and subject to body fluids and cardiac pressure cycles. Commissures supporting the leaflets have semi-permeable membranes which reduce the pressure load on the leaflets during implantation. In response to immersion in body fluids, the membranes become substantially impermeable. The leaflets can stretch in response to loads and hydration, so that the free edges mate shortly after implantation. First and second mechanisms for supporting leaflets to provide multiple effective spring constants. An inner frame supporting commissures of the valve is elastic, permitting the commissures to bend in toward the center of the prosthetic heart valve at very low loads. A relatively rigid annular support ring supports the elastic frame and provides the second spring constant mechanism. The leaflets have an uncoupled mating edge where the leaflet approach each other in the center of the valve.

REFERENCES:
patent: 4291420 (1981-09-01), Reul
patent: 4364127 (1982-12-01), Pierce et al.
patent: 4443895 (1984-04-01), Lane
patent: 4501030 (1985-02-01), Lane
patent: 4666442 (1987-05-01), Arru et al.

Affiliated with

Also associated with

Rating

Bioprosthetic heart valve with semi-permeable commissure posts a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bioprosthetic heart valve with semi-permeable commissure posts a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bioprosthetic heart valve with semi-permeable commissure posts a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-733359