Mitral valve prosthesis
First Claim
1. A prosthetic mitral heart valve comprised of a support housing (20) with a base ring (12) which carries two posts (18, 19) extending in the axial direction of the ring and separated by arcuate wall portions (13, 14) to which the posts are connected and which serve for affixing two flexible cusps or leaflets (13, 14) to which the posts are connected and which serve for affixing two flexible cusps or leaflets (11), the posts having free ends forming inner seats for the cusps or leaflets (11) characterized in that the base ring (12) seen in plan view, has a closed nonround configuration with a common longitudinal axis (15) but two half transverse axes of unequal length (16, 17), whereby the posts (18, 19) lie on a longitudinal axis (15) and form the transition regions from one of the other half shapes, whereby the wall portion with the smaller curvature carries the smaller area mural cusp leaflet with the steeper angle than the wall portion (14) with larger curvature.
2 Assignments
0 Petitions
Accused Products
Abstract
A mitral valve prosthesis consists of a support housing with a large base ring that bears two stays which substantially extend in the ring axis direction and are connected by curved walls for securing two flexible cusps. The free ends of the stays form an inner support for the cusps. In order to avoid a possible mutual interference between the heart and valve functions, the base-ring (12) has in the top view a closed, non-round shape with a common longitudinal axis (15) but two transverse half-axis (16, 17) of different sizes. The stays (18, 19) lie on the longitudinal axis (15) and form the transition between the two halves of the valve. The less curved wall (13) carries a mural cusp (11) having a smaller surface and a higher angle of inclination relative to the base ring base surface than the more curved wall (14).
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Citations
13 Claims
- 1. A prosthetic mitral heart valve comprised of a support housing (20) with a base ring (12) which carries two posts (18, 19) extending in the axial direction of the ring and separated by arcuate wall portions (13, 14) to which the posts are connected and which serve for affixing two flexible cusps or leaflets (13, 14) to which the posts are connected and which serve for affixing two flexible cusps or leaflets (11), the posts having free ends forming inner seats for the cusps or leaflets (11) characterized in that the base ring (12) seen in plan view, has a closed nonround configuration with a common longitudinal axis (15) but two half transverse axes of unequal length (16, 17), whereby the posts (18, 19) lie on a longitudinal axis (15) and form the transition regions from one of the other half shapes, whereby the wall portion with the smaller curvature carries the smaller area mural cusp leaflet with the steeper angle than the wall portion (14) with larger curvature.
Specification