Stent fabrication

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/04 (2006.01) A61F 2/06 (2006.01) A61L 27/00 (2006.01)

Patent

CA 2255476

A stent is covered with a discontinuous expandable wall by the steps of radially contracting the stent and inserting at least a portion of the contracted stent into a tube, the inner surface of which has been previously done over with a lifting medium. The stent is allowed to radially expand in the tube, and the assembly tube plus stent is wetted with an elastomeric polymerisable composition dissolved in a sufficient amount of solvent to permit wet forming. After evaporation of the solvent, the elastomeric composition in the tube is polymerised and the layer covered portion of the stent is taken out of the tube.

Procédé permettant de recouvrir un extenseur d'une paroi expansible discontinue. Il s'agit de contracter l'extenseur dans le sens radial et d'insérer au moins une partie de l'extenseur comprimé dans un tube dont la surface interne a été préalablement enduite d'une substance antiadhérente. L'extenseur est expansé en direction radiale dans le tube; ce dernier et l'extenseur sont imprégnés d'une composition polymérisable dissoute dans une quantité suffisante de solvant pour permettre le façonnage humide. Une fois le solvant évaporé, la composition élastomérique dans le tube est polymérisée et la partie de l'extenseur recouverte par la couche est retirée du tube.

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