Stent fabrication

Details Stent fabrication Stent fabrication

A - Human Necessities

61

F

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

Patent

CA 2206712

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.

Un extenseur est recouvert d'une pellicule expansible non continue, par contraction radiale de l'extenseur et insertion d'au moins une partie de l'extenseur contracté dans un tube, dont la surface interne a été préalablement traitée à l'aide d'un milieu séparateur. Après expansion radiale de l'extenseur dans le tube, on humecte l'ensemble tube plus extenseur avec une composition élastomère polymérisable, dissoute dans suffisamment de solvant pour permettre le traitement par voie humide. Après évaporation du solvant, la composition élastomère dans le tube est polymérisée et on retire du tube la partie couverte d'un revêtement.

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