PROSTHETIC HEART VALVES
2 Assignments
0 Petitions
Accused Products
Abstract
A prosthetic heart valve (e.g., a prosthetic aortic valve) is designed to be somewhat circumferentially collapsible and then re-expandable. The collapsed condition may be used for less invasive delivery of the valve into a patient. When the valve reaches the implant site in the patient, it re-expands to normal operating size, and also to engage surrounding tissue of the patient. The valve includes a stent portion and a ring portion that is substantially concentric with the stent portion but downstream from the stent portion in the direction of blood flow through the implanted valve. When the valve is implanted, the stent portion engages the patient'"'"'s tissue at or near the native valve annulus, while the ring portion engages tissue downstream from the native valve site (e.g., the aorta).
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Citations
62 Claims
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1-31. -31. (canceled)
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32. A prosthetic heart valve, comprising:
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a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end and an aortic section adjacent the distal end, the stent having a first convex curvature and a second concave curvature proximal to the first curvature; a collapsible and expandable valve assembly disposed within the stent and including a plurality of leaflets; and a cuff annularly disposed about the valve assembly in the annulus section. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A prosthetic heart valve, comprising:
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a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end and an aortic section adjacent the distal end, the stent having a concave lower skirt portion in the annulus section that deflects radially outwardly at the proximal end; a collapsible and expandable valve assembly disposed within the stent and including a plurality of leaflets; and a cuff annularly disposed about the valve assembly in the annulus section.
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48. A prosthetic heart valve, comprising:
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a collapsible and expandable stent having a proximal end, a distal end, and an annulus section adjacent the proximal end; a collapsible and expandable valve assembly disposed within the stent and including a plurality of leaflets; and at least two layers material annularly disposed on the valve assembly in the annulus section adjacent the proximal end of the stent, the at least two layers at least partially overlapping one another. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification