Stent and stent graft prosthesis
First Claim
Patent Images
1. An implantable prosthesis comprising:
- i) a compliant and substantially fluid impervious tubular sleeve having a proximal end and a distal end with a conduit therethrough;
ii) a first stent element comprising at least one stent formed from multiple windings of wire fabricated from shape memory material, attached to said sleeve at a first location thereon;
iii) a second stent element attached to said sleeve comprising at least two separate stents, each formed from multiple windings of wire fabricated from shape memory material, each separate stent having a saddle shape configuration with two diametrically opposed peaks and two diametrically opposed valleys, the valleys being axially displaced relative to the peaks, wherein the peaks of each separate stent are aligned longitudinally; and
iv) a third stent element attached to said sleeve configured to extend through an outwardly dilated portion of a vessel to treat the dilated portion when the prosthesis is positioned within the vessel comprising at least two separate stents, each formed from multiple windings of wire fabricated from shape memory material, each separate stent having a saddle shape configuration with two diametrically opposed peaks and two diametrically opposed valleys, the valleys being axially displaced relative to the peaks, wherein the peaks of each separate stent are aligned longitudinally and wherein the spacing of each stent of the third stent element is such that the peak of one stent is transversely aligned with the valley of each immediately neighboring stent of the third stent element,wherein each peak of each separate stent of the second stent element is longitudinally aligned with a peak of each separate stent of the third stent element,wherein the axial displacement between the peaks and valleys of each separate stent of the third stent element is larger than the axial displacement between the peaks and valleys of each separate stent of the second stent element,wherein the ring stents of each of the first stent element, the second stent element and the third stent element are not directly coupled to each other, andwherein at least one stent of at least one of the first stent element, the second stent element or the third stent element is positioned externally of the tubular graft.
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Accused Products
Abstract
A stent graft prosthesis includes spaced stent elements for location on a tubular graft. First and second stent elements are located in first and second locations on the graft. The second stent element includes a saddle shaped stent. The first stent element includes a ring shaped stent. Optionally a third stent element is also present. The tubular graft includes a graft sleeve. The prosthesis can be used for treatment of vascular disorders such as aortic aneurysm.
15 Citations
28 Claims
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1. An implantable prosthesis comprising:
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i) a compliant and substantially fluid impervious tubular sleeve having a proximal end and a distal end with a conduit therethrough; ii) a first stent element comprising at least one stent formed from multiple windings of wire fabricated from shape memory material, attached to said sleeve at a first location thereon; iii) a second stent element attached to said sleeve comprising at least two separate stents, each formed from multiple windings of wire fabricated from shape memory material, each separate stent having a saddle shape configuration with two diametrically opposed peaks and two diametrically opposed valleys, the valleys being axially displaced relative to the peaks, wherein the peaks of each separate stent are aligned longitudinally; and iv) a third stent element attached to said sleeve configured to extend through an outwardly dilated portion of a vessel to treat the dilated portion when the prosthesis is positioned within the vessel comprising at least two separate stents, each formed from multiple windings of wire fabricated from shape memory material, each separate stent having a saddle shape configuration with two diametrically opposed peaks and two diametrically opposed valleys, the valleys being axially displaced relative to the peaks, wherein the peaks of each separate stent are aligned longitudinally and wherein the spacing of each stent of the third stent element is such that the peak of one stent is transversely aligned with the valley of each immediately neighboring stent of the third stent element, wherein each peak of each separate stent of the second stent element is longitudinally aligned with a peak of each separate stent of the third stent element, wherein the axial displacement between the peaks and valleys of each separate stent of the third stent element is larger than the axial displacement between the peaks and valleys of each separate stent of the second stent element, wherein the ring stents of each of the first stent element, the second stent element and the third stent element are not directly coupled to each other, and wherein at least one stent of at least one of the first stent element, the second stent element or the third stent element is positioned externally of the tubular graft. - View Dependent Claims (2, 3, 4)
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5. An implantable prosthesis comprising:
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i) a compliant and substantially fluid impervious tubular sleeve having a proximal end and a distal end with a conduit therethrough; ii) a first stent element comprising at least one stent formed from multiple windings of wire fabricated from shape memory material, attached to said sleeve at a first location thereon; iii) a second stent element attached to said sleeve comprising at least two separate stents, each formed from multiple windings of wire fabricated from shape memory material, each separate stent having a saddle shape configuration with two diametrically opposed peaks and two diametrically opposed valleys, the valleys being axially displaced relative to the peaks, wherein the peaks of each separate stent are aligned longitudinally; and iv) a third stent element attached to said sleeve comprising at least two separate stents, each formed from multiple windings of wire fabricated from shape memory material, each separate stent having a saddle shape configuration with two diametrically opposed peaks and two diametrically opposed valleys, the valleys being axially displaced relative to the peaks, wherein the peaks of each separate stent are aligned longitudinally, wherein each peak of each separate stent of the second stent element is longitudinally aligned with a peak of each separate stent of the third stent element, wherein the axial displacement between the peaks and valleys of each separate stent of the third stent element is larger than the axial displacement between the peaks and valleys of each separate stent of the second stent element, wherein the ring stents of each of the first stent element, the second stent element and the third stent element are not directly coupled to each other, wherein the saddle height of a stent of the third stent element is greater than or equal to the spacing from that stent of the third stent element to each immediately neighboring stent. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An implantable prosthesis comprising:
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i) a compliant and substantially fluid impervious tubular sleeve having a proximal end and a distal end with a conduit therethrough; ii) a first stent element comprising at least one stent formed from multiple windings of wire fabricated from shape memory material, attached to said sleeve at a first location thereon; iii) a second stent element attached to said sleeve comprising at least two separate stents, each formed from multiple windings of wire fabricated from shape memory material, each separate stent having a saddle shape configuration with two diametrically opposed peaks and two diametrically opposed valleys, the valleys being axially displaced relative to the peaks, wherein the peaks of each separate stent are aligned longitudinally; iv) a third stent element attached to said sleeve comprising at least two separate stents, each formed from multiple windings of wire fabricated from shape memory material, each separate stent having a saddle shape configuration with two diametrically opposed peaks and two diametrically opposed valleys, the valleys being axially displaced relative to the peaks, wherein the peaks of each separate stent are aligned longitudinally; and (v) a fourth stent element which comprises an independent saddle shaped ring stent located adjacent a terminal independent circular ring stent and at a distance ranging from touching the independent circular ring stent to about 2 mm, wherein each peak of each separate stent of the second stent element is longitudinally aligned with a peak of each separate stent of the third stent element, wherein the axial displacement between the peaks and valleys of each separate stent of the third stent element is larger than the axial displacement between the peaks and valleys of each separate stent of the second stent element, wherein the ring stents of each of the first stent element, the second stent element and the third stent element are not directly coupled to each other, wherein the saddle height of a stent of the third stent element is greater than or equal to the spacing from that stent of the third stent element to each immediately neighboring stent. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification