Fluid containing endoluminal stent

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/06 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2345614

An endoluminal stent contains a hollow passageway for the circulation of fluids to treat vascular walls affected with malignant growths or experiencing restenosis. The hollow passageway stent can have one or a plurality of passageways and is configured in a tubular shape with numerous coils, providing an empty tubular lumen through the center of the stent to allow blood flow. The stent is connected to a removable catheter that conducts fluid to the stent. Fluid flow may be regulated by valves incorporated in either the stent and/or the catheter. The stent and catheter are connected to avoid leakage of the fluid. Cryogenic, heated or radioactive fluids are circulated through the stent to treat the affected sites. A method of delivering drugs to the vascular wall is also provided by creating a stent with porous outer walls to allow diffusion of the drug.

Dans cet extenseur endoluminal est ménagé un passage permettant la circulation de fluides destinés au traitement des parois de vaisseaux porteurs de tumeur maligne ou atteints de resténose. Cet extenseur, qui peut comporter un ou plusieurs passages, a une forme tubulaire comprenant plusieurs enroulements, ce qui définit une lumière tubulaire vide dans le centre de l'extenseur laissant un libre passage au flux sanguin. Cet extenseur est raccordé à un cathéter amovible lui amenant le fluide. Il est possible de réguler l'écoulement fluidique à l'aide de clapets placés dans l'extenseur et/ou dans le cathéter. L'extenseur et le cathéter sont raccordés afin d'éviter toute perte de fluide. A travers l'extenseur circulent des fluides cryogènes, chauds ou radioactifs aux fins du traitement des sites atteints. Cette invention a également trait à une méthode d'apport de médicaments à la paroi vasculaire, méthode faisant intervenir un extenseur à parois extérieures poreuses permettant une diffusion du médicament.

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