Sintered ring supported vascular graft

Details Sintered ring supported vascular graft Sintered ring supported vascular graft

2004-12-31

2010-10-05

Isabella, David (Department: 3774)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Arterial prosthesis

Including valve

Reexamination Certificate

active

07806922

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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