Stent graft with a longitudinal support member
A delivery system for delivering and deploying stent grafts having a proximal stent includes a first lumen and a stent capture device including a capture portion fixedly connected adjacent a first lumen distal end. An outer catheter has a catheter distal end and a catheter inner diameter. A second lumen having a second distal end is slidably disposed about the first lumen and within the outer catheter. A stent graft sheath has a sheath proximal end connected to the second distal end and disposed about the first lumen. The sheath has a sheath distal end and a sheath inner diameter greater than the catheter inner diameter for holding a compressed stent graft. A distal nose cone has a cone proximal end connected to either the capture portion or the first distal end. The nose cone and the capture portion are movably adjustable to selectively capture the sheath distal end therebetween.
1. A stent graft comprising:
a) a luminal graft component defining a proximal end, a distal end, and a lumen therebetween, the luminal graft component defining a longitudinal axis;
b) a proximal stent fixed to the proximal end of the luminal graft component, the proximal stent defining a proximal end and a distal end;
c) a distal stent fixed to the distal end of the luminal graft component, the distal stent defining a proximal end and a distal end;
d) a plurality of intermediate stents along the luminal graft component and fixed to the luminal graft component between the proximal stent and the distal stent, wherein the intermediate stents define a circumferential proximal end that is distal to the distal end of the proximal stent and a circumferential distal end that is proximal to the proximal end of the distal stent, wherein the circumferential proximal end lies in a plane distal to the distal end of the proximal stent; and
e) a single curved longitudinal support member spanning at least a portion of the intermediate stents, wherein
i) the single curved longitudinal support member defines a proximal end that is distal to the circumferential proximal end, a distal end that is proximal to the circumferential distal end, and a middle portion that is helically curved, wherein the proximal end and the distal end of the single curved longitudinal support member each extend parallel to a longitudinal axis of the stent graft when the stent graft is in a relaxed position,
ii) the single curved longitudinal support member is on one side of a plane that is parallel to and bisects the longitudinal axis of the luminal graft component, the other side of the plane of the luminal graft component being free of the curved longitudinal support member,
iii) the single curved longitudinal support member is substantially reverse-mirror symmetrical with respect to the longitudinal axis of the luminal graft component, and
iv) the single curved longitudinal member is independent of both the proximal stent and the distal stent, thereby forming a gimbaled proximal end and a gimbaled distal end of the stent graft.
2. The stent graft of claim 1 , wherein at least one of the proximal stent and distal stent includes a plurality of struts that are joined to each other at opposite ends to define proximal apices and distal apices.
3. The stent graft of claim 2 , wherein the proximal apices of the proximal stent extend proximally from the proximal end of the luminal graft component.
4. The stent graft of claim 2 , wherein at least a portion of the intermediate stents include a plurality of struts that are joined to each other at opposite ends to define proximal apices and distal apices.
5. The stent graft of claim 1 , wherein proximal end and the distal end of the curved longitudinal support member are nested within proximal apices and distal apices, respectively, of the most proximal stent and most distal stent of the plurality of intermediate stents.
6. The stent graft of claim 5 , wherein the proximal end and distal end of the curved longitudinal support member are looped.
7. The stent graft of claim 1 , wherein the proximal stent includes nitinol.
8. The stent graft of claim 1 , wherein the distal stent includes nitinol.
9. The stent graft of claim 1 , wherein the intermediate stents include nitinol.