System and method of pivoted stent deployment
View Patent ↗The invention provides a stent-graft system comprising a graft member and a stent having a connection end interconnected with the graft member and a free end opposed thereto. A belt retaining structure is provided at the stent free end. A belt is releasably retained in the belt retaining structure and is configured to constrain the stent free end independent of the stent connection end. A method of securing at least one end of a stent-graft within a vessel is also provided.
1. A stent-graft system comprising:
a graft member;
a stent having a connection end interconnected with the graft member and a free end opposed thereto;
a belt retaining structure provided at the stent free end;
a belt releasably engaging the belt retaining structure and configured to constrain the stent free end substantially independent of the stent connection end; and
a pivot fitting configured to retain the belt about the belt retaining structure such that the belt pivotally secures the stent free end to the pivot fitting.
2. The stent-graft system according to claim 1 wherein the pivot fitting is attached to a graft delivery member.
3. The stent-graft system according to claim 2 wherein the pivot fitting includes an axial bore configured to receive the graft delivery member.
4. The stent-graft system according to claim 1 wherein the pivot fitting includes a radial belt support member with a circumferential groove configured to receive the belt.
5. The stent-graft system according to claim 4 wherein the radial belt support member includes a plurality of radial slots configured to receive respective portions of the stent free end.
6. The stent-graft system according to claim 4 wherein the pivot fitting includes an area of reduced cross section configured to receive the belt retaining structure and a diameter of the stent connection end in the partially deployed state is determined at least in part by the relationship of an outer diameter of the area of reduced cross section and an inner diameter of the circumferential groove.