Stent mounted valve
First Claim
1. A prosthetic valve to be inserted into a body lumen, said valve having leaflets that are spread apart during forward flow of fluid to create an orifice, and said leaflets coming into contact with each other during reverse flow of fluid, thereby impeding said reverse flow of fluid, the valve comprising:
- a hollow, cylindrical stent having an inner surface and an outer surface, and having a first and a second open end; and
a single tubular membrane mounted to said inner surface, said membrane having a graft portion internally folded and bonded to itself at a plurality of points to form pouches including said leaflets, and a sleeve portion on an outer surface of said stent to secure said membrane thereto.
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Accused Products
Abstract
There is described a prosthetic valve to be inserted into a body lumen, the valve having leaflets that are spread apart during forward flow of fluid to create an orifice, and the leaflets coming into contact with each other during reverse flow of fluid, thereby impeding the reverse flow of fluid, the valve comprising: a hollow, cylindrical stent having an inner surface and an outer surface, and having a first and a second open end; and valve means formed from a single tubular membrane, the membrane mounted to the stent, the membrane having a graft portion internally folded and bonded to itself at a plurality of points to form pouches such that the leaflets extend from the pouches, and a sleeve portion on an outer surface of the stent to secure the membrane thereto.
683 Citations
40 Claims
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1. A prosthetic valve to be inserted into a body lumen, said valve having leaflets that are spread apart during forward flow of fluid to create an orifice, and said leaflets coming into contact with each other during reverse flow of fluid, thereby impeding said reverse flow of fluid, the valve comprising:
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a hollow, cylindrical stent having an inner surface and an outer surface, and having a first and a second open end; and
a single tubular membrane mounted to said inner surface, said membrane having a graft portion internally folded and bonded to itself at a plurality of points to form pouches including said leaflets, and a sleeve portion on an outer surface of said stent to secure said membrane thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A prosthetic valve to be inserted into a body lumen, said valve having leaflets that are spread apart during forward flow of fluid to create an orifice, and said leaflets coming into contact with each other during reverse flow of fluid, thereby impeding said reverse flow of fluid, the valve comprising:
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a hollow, cylindrical stent having an inner surface and an outer surface, and having a first and a second open end; and
a tubular membrane mounted to said inner surface, said tubular membrane having a graft portion within said stent internally folded and bonded to itself at a plurality of points to form pouches including said leaflets, and wherein said pouches are interconnected such that fluid entering a first of said pouches can flow into an adjacent pouch during said reverse flow of fluid to fill said adjacent pouch and cause all of said leaflets to come into contact for said impeding of said reverse flow. - View Dependent Claims (19, 20)
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21. A prosthetic valve to be inserted into a body lumen, the valve comprising:
a membrane having a plurality of flexible leaflets that are spread apart during forward flow of fluid to create an orifice, said leaflets coming into contact with each other during reverse flow of fluid, thereby impeding said reverse flow of fluid, and at least one of said plurality of leaflets having a perforation therethrough to allow a small amount of regurgitation to be present during said forward and reverse flow of fluid, said perforation being positioned on said at least one of said plurality of leaflets such that said fluid is prevented from stagnating in a zone with a high risk of fluid stagnation. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A prosthetic valve to be inserted into a body lumen, said valve having leaflets that are spread apart during forward flow of fluid to create an orifice, and said leaflets coming into contact with each other during reverse flow of fluid, thereby impeding said reverse flow of fluid, the valve comprising:
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a hollow, cylindrical stent having an inner surface and an outer surface, and having a first and a second open end; and
a tubular membrane mounted to said stent, said membrane folded to form said leaflets within said stent and having a sleeve portion on an outer surface of said stent to secure said membrane thereto, said leaflets having a base along a fold of said membrane, wherein said base of said leaflets is held along a circumference of said stent - View Dependent Claims (31)
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32. A method of replacing a first expandable prosthetic valve percutaneously, said first prosthetic valve having a stent that can be re-expanded to a larger size and valve material that is stretchable beyond its usual dimension, the method comprising:
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expanding said first prosthetic valve to a predetermined diameter such that said first prosthetic valve ceases to function and an opening is provided within; and
inserting a second prosthetic valve having a diameter substantially equal to said predetermined diameter into said opening such that said second prosthetic valve matingly engages and seals against said first prosthetic valve. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40)
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Specification