| 摘要 |
A graft system is provided that includes either a support ring or a support sleeve that is used in providing transitional support to either an end or a side of a graft or a host vessel. The support ring is provided with a generally cylindrical wall and defining a passageway that is adapted for receiving an end of a vein graft or an end of a host vessel. The support ring has a first end and a second end, with the thickness of the wall being greater at the first end than at the second end. The support sleeve is provided with a first side edge, a second side edge, and an opening. The support sleeve surrounds a side opening of a graft or host vessel so that the opening of the support sleeve is aligned with the side opening of the graft or host vessel. The thickness of the support sleeve is greater at the opening than at the first and second side edges.
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