PTFE implantable tubular prostheses with external coil support
First Claim
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1. An implantable luminal device, comprising:
- an elongate flexible tube of a first fluoropolymer, said tube having a node/fiber microstructure, which is sufficiently porous to permit tissue ingrowth when implanted in the body; and
a support component comprising at least one flexible filament of a second fluoropolymer, said at least one filament wrapped helically around an external wall of the tube;
wherein said first and second fluoropolymers have substantially the same crystalline melting point, said flexible filament being cosintered with and fused to said exterior wall of said tube.
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Abstract
A flexible implantable luminal device is disclosed, which is made from a porous cylindrical tube manufactured from extruded fluoropolymer. A fluoropolymer filament is wrapped helically around the external surface of the tube. The filament is fused to the tube to form a unitary composite structure by heating the wrapped tube to a temperature above the melting points of the fluoropolymers. The resulting composite is a radially reinforced flexible luminal prosthesis suitable for implantation, particularly, as a vascular graft or endoprosthesis. Also disclosed is a method for manufacturing the prosthesis.
160 Citations
14 Claims
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1. An implantable luminal device, comprising:
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an elongate flexible tube of a first fluoropolymer, said tube having a node/fiber microstructure, which is sufficiently porous to permit tissue ingrowth when implanted in the body; and a support component comprising at least one flexible filament of a second fluoropolymer, said at least one filament wrapped helically around an external wall of the tube; wherein said first and second fluoropolymers have substantially the same crystalline melting point, said flexible filament being cosintered with and fused to said exterior wall of said tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification