| 摘要 |
In vivo failure of a helical stent graft is addressed by provision of rei nforcing material for the graft material in at least two (preferably three) separate sections, each section comprising a continuous integral piece of ma terial, wherein each section of reinforcing material is in the form of a hel ix with a longitudinal axis substantially parallel to the longitudinal axis of the tube. Thus leaks caused by unravelling of the reinforcing material ar e mitigated.
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