Claims
- 1. An endovascular stent graft comprising:
a main stent graft body having at least one stent secured to graft material, the stent graft body having a main body section defining a lumen extending from a proximal end to a bifurcation, and further having an ipsilateral leg portion and a contralateral portion extending integrally from the main body section at the bifurcation to respective distal ends and defining respective lumens; and an attachment graft tube having proximal and distal end portions and defining a lumen therethrough and further including an attachment stent extending from the proximal end portion, wherein the attachment graft tube is securable to the main stent graft body at an overlapping region, the attachment graft tube distal end portion being securable to and within the proximal end portion of the main stent graft body at the overlapping region, upon deployment.
- 2. The stent graft of claim 1 wherein the attachment graft tube is securable to the main stent graft body by a friction fit generated by spring forces of a self-expanding stent within the attachment graft tube distal portion pressing radially outwardly against the expanded proximal end portion of the main stent graft body, upon deployment.
- 3. The stent graft of claim 1 further comprising an intragraft tube having proximal and distal end portions, wherein the intragraft tube is disposed to extend from within the lumen of the main stent graft body proximally into the lumen of the attachment graft tube, and the intragraft tube underlying, supporting and extending beyond the overlapping region, upon deployment.
- 4. The stent graft of claim 3 wherein the intragraft tube is securable to both the main stent graft body and the attachment graft tube by a friction fit generated by spring forces of a plurality of self-expanding stents, respective ones of which are within at least the intragraft tube distal and proximal portions, pressing radially outwardly against the expanded proximal end portion of the main stent graft body and the expanded distal end portion of the attachment graft tube, upon deployment.
- 5. The stent graft of claim 1 further comprising a contralateral leg extension for being secured to the distal end of the contralateral portion.
- 6. An endovascular stent graft comprising:
a main stent graft body having at least one stent secured to graft material, the stent graft body having a main body section defining a lumen extending from a proximal end to a bifurcation, and further having an ipsilateral leg portion and a contralateral portion extending integrally from the main body section at the bifurcation to respective distal ends and defining respective lumens; a contralateral leg extension for being secured to the distal end of the contralateral portion; an attachment graft tube having proximal and distal end portions and defining a lumen therethrough and further including an attachment stent extending proximally from the proximal end portion, wherein the attachment graft tube is securable to the main stent graft body at an overlapping region, the attachment graft tube distal end portion being securable to and within the proximal end portion of the main stent graft body at the overlapping region by a friction fit generated by spring forces of a self-expanding stent within the attachment graft tube distal portion pressing radially outwardly against the expanded proximal end portion of the main stent graft body upon deployment; and an intragraft tube having proximal and distal end portions, wherein the intragraft tube is disposed within the lumen extending from the main body section of the main stent graft proximally into the lumen of the attachment graft tube, and the intragraft tube underlying, supporting and extending beyond the overlapping region, the intragraft tube being securable to both the main stent graft body and the attachment graft tube by a friction fit generated by spring forces of a plurality of self-expanding stents, respective ones of which are within at least the intragraft tube distal and proximal portions, pressing radially outwardly against the expanded proximal end portion of the main stent graft body and the expanded distal end portion of the attachment graft tube, upon deployment thereof.
- 7. An endovascular stent graft for treatment of an aneurysm in a vessel having a bifurcation comprising:
at least main stent graft body having at least one stent secured to graft material the stent graft body having a main body section defining a lumen extending from a proximal end to a bifurcation, and further having an ipsilateral leg portion and a contralateral portion extending integrally from the main body section at the bifurcation to respective distal ends and defining respective lumens; and the main body section having a length extending from the bifurcation to the proximal end that is less than the span of the aneurysm.
- 8. The stent graft of claim 7 wherein the proximal end of the main stent graft body is free of any vessel attachment mechanism.
- 9. A first stent graft member to be used in conjunction with at least one other stent graft member to form a stent graft assembly to be located within a vessel of a patient, the first member comprising at a proximal portion thereof a first attachment region for enabling the first member to be attached via at least one stent to a proximal part of the vessel, wherein the first member further comprises at an outer surface of a distal portion thereof a second attachment region extending over the outer surface and serving to provide a region in which the other stent graft member can be attached to the first member, and wherein the distal part of the first member is to extend significantly within at least the proximal portion of the other member.
- 10. A first stent graft member according to claim 9, further comprising an additional graft tube to be attached to a section of the first member and designed to extend in a distal direction within the other member.
- 11. The method of placing an endovascular stent graft in a vessel at a bifurcation thereof where branch vessels join the vessel, for treating an aneurysm thereat, comprising the steps of:
placing a bifurcated main stent graft body in the aneurysm unattached to a wall of the vessel with a first leg portion in a first branch vessel; urging a bifurcation of the main stent graft body into a seated position against the bifurcation of the vessel to move a second leg portion in a second branch vessel; and deploying an attachment mechanism of the stent graft to attach to walls of the vessel beyond the aneurysm.
- 12. The method as set forth in claim 11, wherein the attachment mechanism is affixed to a proximal end portion of an attachment graft tube, and the step of deploying includes delivering the attachment graft tube to a proximal end of the main stent graft body and securing a distal end portion of the attachment graft tube to the proximal end of the main stent graft body.
- 13. The method as set forth in claim 12 further including the step of delivering an intragraft tube into the proximal end portion of the main stent graft body and the distal end portion of the attachment graft tube, and securing the intraluminal graft tube to both the main stent graft body and attachment graft tube.
- 14. A method of placing an endovascular stent graft in a vessel at a bifurcation thereof where branch vessels join the vessel, for treating an aneurysm thereat, comprising the steps of:
placing a bifurcated main stent graft body in the aneurysm unattached to a wall of the vessel with a first leg portion in a first branch vessel; urging a bifurcation of the main stent graft body into a seated position against the bifurcation of the vessel to move a second leg portion in a second branch vessel; and securing the stent graft to the vessel wall.
- 15. A delivery system for endovascular devices, comprising:
a first sheath having a distal end and a proximal end and containing at least a first expandable device at a proximal end; a second sheath movable within the first sheath and having a respective distal end and a respective proximal end, the respective proximal end concluding distally of the first expandable device and containing a second expandable device; a first pusher associated with the first expandable device extending thereto within the first and second sheathes from a first proximal control pusher end exposed at the distal ends of the first and second sheathes; and a second pusher associated with the second expandable device extending thereto within the first and second sheathes from a second distal control pusher end exposed at the distal ends of the first and second sheathes.
RELATED APPLICATION INFORMATION
[0001] This application claims priority from U.S. Provisional Application Serial No. 60/189,114 filed Mar. 14, 2000 and Provisional Application Serial No. 60/202,468 filed May 8, 2000.
Provisional Applications (2)
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Number |
Date |
Country |
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60202468 |
May 2000 |
US |
|
60189114 |
Mar 2000 |
US |