Methods for making encapsulated stent-grafts

   
   

Shape memory alloy and elastically self-expanding endoluminal stents which are at least partially encapsulated in a substantially monolithic expanded polytetrafluorethylene ("ePTFE") covering. An endoluminal stent, which has a reduced diametric dimension for endoluminal delivery and a larger in vivo final diametric diameter is encapsulated in an ePTFE covering which circumferentially covers both the luminal and abluminal walls along at least a portion of the longitudinal extent of the endoluminal stent. The endoluminal stent is fabricated from a shape memory alloy which exhibits either shape memory or pseudoelastic properties or from an elastic material having an inherent spring tension.

Forme la aleación de la memoria y los stents del endoluminal elástico uno mismo-que se ampli'an que se encapsulan por lo menos parcialmente en una cubierta ampliada substancialmente monolítica del polytetrafluorethylene ("ePTFE"). Un endoluminal stent, que tiene una dimensión diametric reducida para la entrega del endoluminal y un diámetro diametric final in vivo más grande se encapsula en una cubierta del ePTFE que circunferencial cubra las paredes del luminal y del abluminal a lo largo por lo menos de una porción del grado longitudinal del endoluminal stent. El endoluminal stent se fabrica de una aleación de la memoria de la forma que exhiba memoria de la forma o características pseudoelastic o de un material elástico que tiene una tensión inherente del resorte.

 
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