A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/06 (2006.01) A61M 25/10 (2006.01) A61M 29/02 (2006.01)
Patent
CA 2189794
A device for delivering and deploying a graft stent complex comprises a flexible guide sheath (20), the outer diameter of the guide sheath being constant throughout its length and the inner diameter of the guide sheath increasing from the proximal end to the distal end. A hemostatic valve (21) having at least two ports (22, 23) is attached to the proximal end of the guide sheath, one port adapted to permit passage of a catheter into the guide sheath and the other port adapted to permit passage of a fluid into the guide sheath. A lead balloon catheter (40) extends through the first port into the guide sheath, and includes an inflatable lead balloon (47) at its distal end. A portion of the lead balloon extends from the distal end of the guide sheath to provide a tapered leading surface and also to seal the distal end of the guide sheath. Deployment means are provided within the guide sheath, with the stent being mounted on the deployment means. The deployment means includes an elongated flexible (32) shaft having a guide wire lumen (34) disposed in colinear relationship with the guide wire lumen of the lead balloon catheter. Fluid may be applied under pressure to the second port of the hemostatic valve to vary the flexibility of the guide sheath.
Dispositif de mise en place et d'expansion d'un extenseur de greffe comportant une gaine de guidage flexible (20) de diamètre extérieur constant sur toute sa longueur et de diamètre intérieur croissant de l'extrémité proximale à l'extrémité distale. Une vanne hémostatique (21), fixée à l'extrémité proximale de la gaine de guidage, comporte au moins deux orifices (22, 23), dont l'un pour le passage du cathéter vers la gaine de guidage et l'autre pour celui d'un fluide transitant vers la gaine de guidage. Un cathéter à ballonnet-guide (40) s'étendant à travers le premier orifice pour déboucher dans la gaine de guidage comporte un ballonnet-guide gonflable (47) placé à son extrémité distale, dont une portion, saillant de l'extrémité de la gaine de guidage, constitue une surface de guidage fuselée obstruant l'extrémité distale de la gaine. Ladite gaine est par ailleurs munie de moyens d'expansion sur lesquels vient se placer l'extenseur de greffe. Lesdits moyens comportent une tige flexible allongée (32) percée d'une lumière pour un fil de guidage (34) colinéaire avec la lumière du fil de guidage du cathéter. On peut envoyer un liquide sous pression par le second orifice de la vanne hémostatique pour faire varier la flexibilité de la gaine de guidage.
Marin Michael
Marin Ralph
Endovascular Systems Inc.
Robic
Teramed Inc.
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