Self-supporting laminated films, structural materials and medical devices manufactured therefrom and methods of making same
First Claim
1. An implantable medical graft comprising an abluminal film composed of biocompatible metal layers and a self-supporting luminal film concentrically positioned within the abluminal film, wherein the self-supporting luminal film is composed of biocompatible metal layers, wherein an interfacial region is defined where the abluminal film and luminal film are in immediate juxtaposition and co-extensive with one another;
- and the interfacial region has a thermodynamic parameter change relative to a thermodynamic parameter of the abluminal film or the luminal film, each of the abluminal film and luminal film having a plurality of openings passing there through, wherein each opening of the plurality of openings are dimensioned to be capable of permitting cellular migration without permitting fluid flow there through.
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Accused Products
Abstract
Metal foils, wires, and seamless tubes with increased mechanical strength are provided. As opposed to wrought materials that are made of a single metal or alloy, these materials are made of two or more layers forming a laminate structure. Laminate structures are known to increase mechanical strength of sheet materials such as wood and paper products and are used in the area of thin films to increase film hardness, as well as toughness. Laminate metal foils have not been used or developed because the standard metal forming technologies, such as rolling and extrusion, for example, do not lend themselves to the production of laminate structures.
113 Citations
9 Claims
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1. An implantable medical graft comprising an abluminal film composed of biocompatible metal layers and a self-supporting luminal film concentrically positioned within the abluminal film, wherein the self-supporting luminal film is composed of biocompatible metal layers, wherein an interfacial region is defined where the abluminal film and luminal film are in immediate juxtaposition and co-extensive with one another;
- and the interfacial region has a thermodynamic parameter change relative to a thermodynamic parameter of the abluminal film or the luminal film, each of the abluminal film and luminal film having a plurality of openings passing there through, wherein each opening of the plurality of openings are dimensioned to be capable of permitting cellular migration without permitting fluid flow there through.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
Specification