Radially expandable intraluminal stent and delivery catheter...

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/00 (2006.01) A61F 2/06 (2006.01) A61M 25/01 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2290990

The present invention is a delivery catheter (10) for a radially expandable intraluminal stent (12). The delivery catheter comprises an elongate outer tube (14) defining proximal, distal ends, and a lumen (20) extending longitudinally therethrough. In addition to the outer tube the delivery catheter includes an elongate inner tube (24) defining proximal, distal ends, and a guide wire lumen (30) extending longitudinally therethrough. The inner tube is movably disposed within the lumen of the outer tube. The delivery catheter further includes a flexible deployment sleeve (40) having a first end attached to the distal end of the outer tube, and a second end attached to the inner tube at a location proximal to the distal end thereof. The pressurization of the lumen of the outer tube with a fluid causes fluid pressure to be exerted on the sleeve in a manner facilitating the movement, and the inner and outer tubes relative to each other such that a distal portion of the inner tube extending distally from the second end of the sleeve is deployed from the distal end of the outer tube.

L'invention porte sur un cathéter (10) de mise en place d'une prothèse endovasculaire (12) à expansion radiale. Ledit cathéter comprend un tube extérieur (14) allongé présentant une extrémité proximale et une extrémité distale et une lumière (20) les reliant longitudinalement ainsi qu'un tube intérieur (24) allongé présentant une extrémité proximale et une extrémité distale et une lumière (30) pour fil guide les reliant longitudinalement, le tube intérieur étant mobile à l'intérieur du tube extérieur. Le cathéter comprend en outre un manchon souple (40) de mise en place dont une extrémité est fixée à l'extrémité distale du tube extérieur et l'autre au tube intérieur à proximité de son extrémité distale. En mettant sous pression la lumière du tube extérieur à l'aide d'un fluide, on exerce une pression sur le manchon souple qui facilite les mouvements des deux tubes l'un par rapport à l'autre, et permet à la partie distale du tube intérieur se trouvant en aval de la deuxième extrémité du manchon de se déployer à partir de l'extrémité distale du tube extérieur.

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