Expandable supportive endoluminal grafts
DCFirst Claim
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1. A bifurcated expandable supportive endoluminal graft, comprising:
- a tubular supporting component with a trunk tube having a longitudinal axis and at least one branch tube having an axis disposed at an acute angle with respect to said longitudinal axis of the trunk tube, said tubular supporting component having an internal surface disposed toward the longitudinal axis of each of said trunk tube and branch tube and an external surface spaced outwardly from and shaped complementarily with said internal surface, said tubular supporting component having a network of strand areas with interstices therebetween, said tubular supporting component being expandable from a first diameter of each of the trunk tube and branch tube at which the graft can be inserted into a body pathway, each of said trunk tube and branch tube having a second diameter, each said second diameter being greater than each respective first diameter;
a stretchable wall of essentially inert biocompatible material, said stretchable wall being applied onto both of said internal and external surfaces of the tubular supporting component such that said stretchable wall is both a liner covering said internal surface of the tubular supporting component and also a cover over said external surface of the tubular supporting component, said stretchable wall having a first diameter size when said tubular supporting component is at its said first diameter of each of the trunk tube and branch tube, and said stretchable wall having a second diameter when said tubular supporting component is at its said second diameter size of each of the trunk tube and branch tube;
said liner is bonded to said cover through said interstices of the tubular supporting component so as to encapsulate said tubular supporting component within said stretchable wall; and
said stretchable wall is made from a porous elastomeric material that provides a structure which allows normal cellular invasion thereinto from the body pathway when implanted therewithin.
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Abstract
An endoluminal graft which is both expandable and supportive is provided either in a longitudinal form or in a bifurcated form. The graft expands between a first diameter and a second, larger diameter. The support component is an expandable stent endoprosthesis. A cover, liner, or a liner, or both a cover and a liner are applied to the endoprosthesis in the form of a stretchable wall material that is porous, elastomeric and biocompatible in order to allow normal cellular invasion upon implantation, without stenosis, when the expandable and supportive graft is at its second diameter. Preferably, the elastomeric wall material is a polycarbonate urethane.
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Citations
29 Claims
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1. A bifurcated expandable supportive endoluminal graft, comprising:
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a tubular supporting component with a trunk tube having a longitudinal axis and at least one branch tube having an axis disposed at an acute angle with respect to said longitudinal axis of the trunk tube, said tubular supporting component having an internal surface disposed toward the longitudinal axis of each of said trunk tube and branch tube and an external surface spaced outwardly from and shaped complementarily with said internal surface, said tubular supporting component having a network of strand areas with interstices therebetween, said tubular supporting component being expandable from a first diameter of each of the trunk tube and branch tube at which the graft can be inserted into a body pathway, each of said trunk tube and branch tube having a second diameter, each said second diameter being greater than each respective first diameter; a stretchable wall of essentially inert biocompatible material, said stretchable wall being applied onto both of said internal and external surfaces of the tubular supporting component such that said stretchable wall is both a liner covering said internal surface of the tubular supporting component and also a cover over said external surface of the tubular supporting component, said stretchable wall having a first diameter size when said tubular supporting component is at its said first diameter of each of the trunk tube and branch tube, and said stretchable wall having a second diameter when said tubular supporting component is at its said second diameter size of each of the trunk tube and branch tube; said liner is bonded to said cover through said interstices of the tubular supporting component so as to encapsulate said tubular supporting component within said stretchable wall; and said stretchable wall is made from a porous elastomeric material that provides a structure which allows normal cellular invasion thereinto from the body pathway when implanted therewithin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A bifurcated expandable supportive endoluminal graft, comprising:
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a trunk tubular supporting component with a longitudinal axis, an internal surface disposed toward the longitudinal axis, and an external surface spaced outwardly from and shaped complementarily with said internal surface, said trunk tubular supporting component having a network of strand areas with openings therebetween, said trunk tubular supporting component being expandable from a first diameter at which the bifurcated expandable supportive endoluminal graft is insertable into a body pathway to a second diameter, said second diameter being greater than said first diameter; a stretchable wall of essentially inert biocompatible material, said stretchable wall being applied onto both of said internal surface and said external surface of the tubular trunk supporting component such that said stretchable wall is both a liner covering said internal surface of the trunk tubular supporting component and also a cover over said external surface of the trunk tubular supporting component, said stretchable wall having an extension portion that extends beyond said trunk tubular supporting component; said liner is bonded to said cover through and at said openings of the trunk tubular supporting component so as to encapsulate said trunk tubular supporting component within said stretchable wall; and said extension portion being formed into at least two generally tubular branch sleeves of stretchable wall material, each said sleeve being sized and shaped to receive a branch tubular expandable supporting component. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification