| 摘要 |
In a branch vessel prosthesis (20) comprising a graft (30), a stent (46) coupled to the proximal region of the graft, where the proximal region of the graft includes a generally straight configuration in an expanded deployed state that is substantially parallel to a longitudinal axis of a main vessel; and a stent (66) coupled to the distal region of the graft, where the distal region of the graft includes a generally straight configuration in the expanded deployed state that is substantially parallel to a branch vessel, there is provided an expansion member (55) coupled to the central region (50) of the graft, where the expansion member comprises a resilient pre-formed material that promotes a curvature of the central region in the expanded deployed state. |
