Trileaflet Heart Valve
First Claim
1. A prosthetic heart valve, comprising:
- a plurality of flexible members defining a prosthetic valve aperture adapted to open and close in response to a flow of blood produced by a heart, said plurality of flexible members including a first layer of a polymeric material, a second layer of the polymeric material, and a central porous polymeric membrane sandwiched between the first layer and the second layer.
1 Assignment
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Accused Products
Abstract
A prosthetic heart valve is described that includes three leaflet members which open and close in unison with the flowing of blood through the aorta. The leaflets are made of a composite multilayer polymer material that includes a central porous material such as polyethylene terephthalate sandwiched between two other polymer layers. The two polymer layers are made up of block co-polymers that contain polyisobutylene. The composite multilayer may be formed by dip coating the porous material into a solution of the block co-polymer or by compression molding of the porous material between two layers of the block co-polymer. The composite multilayer polymer material is biocompatible and durable in bodily implant applications.
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Citations
32 Claims
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1. A prosthetic heart valve, comprising:
a plurality of flexible members defining a prosthetic valve aperture adapted to open and close in response to a flow of blood produced by a heart, said plurality of flexible members including a first layer of a polymeric material, a second layer of the polymeric material, and a central porous polymeric membrane sandwiched between the first layer and the second layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A prosthetic heart valve, comprising:
a plurality of flexible members defining a prosthetic valve aperture adapted to open and close in response to a flow of blood produced by a heart, each flexible member including a polymeric composite, the polymeric composite including a polymeric fabric and two outer polymeric layers wherein the polymeric fabric is surrounded by the two outer polymeric layers, the two outer polymeric layers forming a coating on said polymeric fabric. - View Dependent Claims (26, 27)
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28. A method for manufacturing a prosthetic valve comprising the steps of:
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a) providing a tubular polymeric structure having a top portion, a bottom portion, and defining a central axis, the top portion realized from a composite including an intermediate porous polymeric fabric disposed between two or more outer polymeric layers;
b) inserting the polymeric structure through a stent support structure, the stent support structure having a plurality of struts, the struts projecting substantially parallel to the central axis of the tubular structure;
c) forming a plurality of leaflet members from the top portion of the cylindrical polymeric structure;
d) suturing the leaflet members to the stent support structure; and
e) folding a bottom portion of the tubular polymeric structure upon itself to form an anchoring cuff. - View Dependent Claims (29, 30, 31, 32)
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Specification