A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/06 (2006.01)
Patent
CA 2370804
A composite stent-graft tubular prosthesis (10) includes an inner PTFE tubular structure (4), an outer PTFE tubular structure (6) positioned about the inner PTFE tubular structure (4) and a diametrically deformable stent (2) interposed between the inner (4) and outer PTFE tubular structures (6). The interposed stent (2) is formed from an elongate wire (12) helically wound with a plurality of longitudinally spaced turns into an open configuration. Each of the turns includes successive aligned upper (14) and lower wave-like peaks (16). Selective ones of said upper (14) and lower peaks (16) are exposed exteriorly of the outer PTFE structure (6) to render the composite prosthesis longitudinally flexible.
L'invention porte sur une prothèse (10) endovasculaire composite de type stent/greffe comportant une structure tubulaire intérieure (4) de PTFE, une structure tubulaire extérieure (6) de PTFE entourant la structure intérieure (4) et un stent (2) diamétralement déformable placé entre les deux structures (4, 6) et fait d'un fil (12), enroulé en une hélice ouverte à ses extrémités à plusieurs spires espacées longitudinalement. Chaque spire comporte des pics ondulés supérieurs (14) et inférieurs (16) successifs alignés dont certains sont exposés à l'extérieur de la structure tubulaire extérieure (6) de PTFE de manière à rendre la prothèse plus flexible longitudinalement.
Boatman Jeff
Golds Ellen
Tseng David
Boston Scientific Limited
Piasetzki Nenniger Kvas Llp
LandOfFree
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