Expandable transluminal graft prosthesis for repair of...

A - Human Necessities – 61 – F

Patent

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A61F 2/06 (2006.01)

Patent

CA 2212286

A transluminal arrangement for positioning a prosthesis assembly at an aneurysm in the bifurcated lumen of the aorta and the common iliac arteries extending therefrom. The prosthesis assembly includes a bifurcated endovascular graft having a main body and ipsilateral and contralateral limbs extending therefrom. The assembly also includes main, ipsilateral, and contralateral spring assemblies each having a compressed state. When released from its compressed state, each spring expands a portion of the graft to substantially conform that portion of the graft to the wall of the bifurcated lumen. The transluminal arrangement comprises an elongated member extending through the main and ipsilateral bores of the graft and includes attachment sutures and an inner catheter extending therethrough for temporarily attaching the main and ipsilateral spring assemblies to the elongated member. An outer sheath contains the attached prosthesis assembly, whereas stent boots consisting of short length sheaths contain the ipsilateral and contralateral spring assemblies. A control limb delivery catheter and attachment sutures maintain the contralateral graft limb and spring assembly in the stent boot for placement in the contralateral iliac artery.

L'invention concerne une prothèse endovasculaire destinée à traiter un anévrysme dans la lumière des bifurcations de l'aorte et des artères iliaques communes partant de l'aorte. La prothèse endovasculaire est constituée d'un corps principal et de ramifications ipsilatérales et contralatérales qui partent du corps principal. Le système comprend également des ressorts principal, ipsilatéral et contralatéral, chacun dans un état comprimé. Lorsqu'il est libéré de son état comprimé, chaque ressort dilate une portion de la prothèse pour adapter cette portion de prothèse à la paroi de la lumière bifurquée. Le système de prothèse endovasculaire comprend un élément allongé traversant les ouvertures principale et ipsélatérale de la prothèse et il comprend des sutures de fixation et un cathéter interne traversant, pour servir à fixer temporairement les ressorts principal et ipsilatéral à l'élément allongé. Une gaine externe tient la prothèse, alors que des manchons de support constitués par de courtes longueurs de gaine contiennent les ressorts ipsilatéral et contralatéral. Un cathéter d'amenée d'un membre de commande et des sutures de fixation maintiennent le membre contralatéral de la prothèse et le ressort dans le manchon de soutien pour positionnement dans l'artère iliaque contralatérale.

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