Multi-component stent-graft system for implantation in a blood vessel with multiple branches

摘要

A multi-component stent-graft system (10) comprises first, second, and third generally tubular stent-grafts (20, 22, 24), which are configured to assume radially-expanded states. The first (20) is shaped so as to define a first lateral opening (34) when radially-expanded. The second (22) is shaped so as to define a second lateral opening (44) when radially-expanded. The first and second (20, 22) are configured such that the second (22) forms a blood-impervious seal with the first (20) around the first lateral opening (34) when the second stent-graft (22) is disposed therethrough, and the first and the second (20, 22) are radially-expanded. The second and the third (22, 24) are configured such that the third (24) forms a blood-impervious seal with the second (22) around the second lateral opening (44) when the third (24) is disposed therethrough, and the second and third (22, 24) are radially-expanded. Other embodiments also described.

主权项

1. Apparatus comprising a multi-component stent-graft system, which comprises:
a first generally tubular stent-graft, which (i) when unconstrained in a radially-expanded state: (a) defines a first lateral opening having a first lateral opening perimeter, and (b) has a first perimeter of a first end thereof that equals at least 200% of a second perimeter of a second end thereof, and (ii) is configured for positioning the first end thereof in a descending aorta, and the second end thereof in one of the branches of an aortic arch, with the first lateral opening disposed in the aortic arch facing upstream; and a second generally tubular stent-graft, which is configured to assume a radially-expanded state, wherein the first and the second stent-grafts are configured such that the second stent-graft forms a blood-impervious seal with the first stent-graft around the first lateral opening when the second stent-graft is disposed therethrough, and the first and second stent-grafts are in their radially-expanded states.