Prosthetic heart valve
First Claim
Patent Images
1. A prosthetic valve comprising:
- a plurality of valve leaflets;
a collapsible, self-expandable frame assembly configured to support the valve leaflets and defining a plurality of commissure portions, wherein the self-expandable frame assembly comprises an undulating continuous elongated wireform member alternately defining convex cusp portions on an inflow end thereof intermediate convex commissure portions on an outflow end thereof, made from a super elastic alloy such that each of the commissure portions is configured to be folded radially inward to a longitudinally collapsed position for delivery of the valve to an implantation site within a body lumen; and
a sewing ring comprising an annular suture-permeable member for contacting a surrounding lumen, the sewing ring being attached to the valve at the inflow end and radially outward of the frame assembly cusp portions, wherein the plurality of commissure portions are adapted to be cantilevered and not in contact with the surrounding lumen and configured to move independently of the sewing ring when it is in contact with the surrounding lumen.
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Accused Products
Abstract
Disclosed prosthetic valves can comprise a sewing ring configured to secure the valve to an implantation site. Some disclosed valves comprise a resiliently collapsible frame having a neutral configuration and a collapsed deployment configuration. Some disclosed frames can self-expand to the neutral configuration when released from the collapsed deployment configuration. Collapsing a disclosed valve can provide convenient access to the sewing ring, such as for securing the valve to the implantation site, as well as for the insertion of the valve through relatively small surgical incisions.
407 Citations
28 Claims
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1. A prosthetic valve comprising:
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a plurality of valve leaflets; a collapsible, self-expandable frame assembly configured to support the valve leaflets and defining a plurality of commissure portions, wherein the self-expandable frame assembly comprises an undulating continuous elongated wireform member alternately defining convex cusp portions on an inflow end thereof intermediate convex commissure portions on an outflow end thereof, made from a super elastic alloy such that each of the commissure portions is configured to be folded radially inward to a longitudinally collapsed position for delivery of the valve to an implantation site within a body lumen; and a sewing ring comprising an annular suture-permeable member for contacting a surrounding lumen, the sewing ring being attached to the valve at the inflow end and radially outward of the frame assembly cusp portions, wherein the plurality of commissure portions are adapted to be cantilevered and not in contact with the surrounding lumen and configured to move independently of the sewing ring when it is in contact with the surrounding lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A prosthetic valve comprising:
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a plurality of valve leaflets arranged to provide one-way longitudinal flow through the valve each having an outlet edge opposite an arcuate peripheral edge; a collapsible, self-expandable frame configured to support the valve leaflets and defining a plurality of convex commissure portions cantilevered in an outflow direction, wherein the self-expandable frame comprises a superelastic alloy such that the frame may be collapsed for delivery of the valve, wherein the frame comprises an undulating continuous elongated wireform defining a plurality of convex cusp portions intermediate the commissure portions; and a stent subassembly configured to secure the valve to a surrounding lumen, the stent subassembly comprising a stent having a circumferential base member with cusps that coincide with and align longitudinally with respective ones of the frame cusp portions and a plurality of posts that extend longitudinally therefrom adjacent and to an outside of respective ones of the plurality of commissure portions of the frame, the stent subassembly being attached to the self-expandable frame with the arcuate peripheral edges of the valve leaflets being secured between the aligned frame cusp portions and the stent cusps, while the outlet edges attach at their ends to the frame commissure portions and adjacent stent posts, and wherein the stent subassembly may be collapsed in the same manner as the frame for delivery of the valve, and wherein the valve is expandable toward a neutral configuration and collapsible to a collapsed delivery configuration for delivery of the valve to an implantation site within a body lumen. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification