Sintered ring supported vascular graft
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United States of America Patent
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Oct 5, 2010
Grant Date -
Jul 6, 2006
app pub date -
Dec 31, 2004
filing date -
Dec 31, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The vascular graft includes a PTFE tube having non-expanded portions formed from sintering a PTFE green tube extrudate. The non-expanded portions are distributed longitudinally along the PTFE tube. The PTFE tube also has expanded portions formed subsequent to the sintering of the PTFE green tube extrudate. The expanded and non-expanded portions are integral with one another, and alternate with one another along the length of the PTFE tube. The expanded and non-expanded portions each have a respective stiffness, where the stiffness of the non-expanded portion is greater than that of the expanded portion.
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