Apparatus and methods for delivery of multiple distributed...

A - Human Necessities – 61 – F

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A61F 2/06 (2006.01) H01Q 3/26 (2006.01) H04B 10/12 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2469127

Blood vessels and other body lumens are stented using multiple, discreet stent structures (30). Stent structures (30) may be balloon expandable or self- expanding and are delivered by a delivery catheter (10) which is repositioned to spaced-apart delivery sights. By coating the stents (30) with particular biologically active substances, hyperplasia within and between the implanted stents (30) can be inhibited. An exemplary delivery catheter (10) comprises a catheter body having both a pusher rod (26) for advancing the stents (30) relative to a sheath (16) for implantig the stents.

L'invention concerne la distension des vaisseaux sanguins et d'autres lumières corporelles à l'aide de multiples structures d'extenseurs discrètes. Les structures d'extenseur peuvent se distendre à l'aide d'un ballonet ou être auto-extensibles et sont mises en place à l'aide d'un cathéter de mise en place repositionné en fonction des sites de mise en place séparés. Le revêtement des extenseurs avec des substances spéciales biologiquement actives permet d'inhiber l'hyperplasie dans et entre les extenseurs implantés. Dans un mode de réalisation, un cathéter de mise en place comprend un corps de cathéter équipé d'une tige de poussée permettant de faire avancer les extenseurs par rapport à une enveloppe, et d'un cathéter de mise en place à mouvement alternatif permettant d'implanter les extenseurs.

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