Polymer-coated stent structure

Details Polymer-coated stent structure Polymer-coated stent structure

B - Operations, Transporting

29

C

B29C 41/20 (2006.01) A61F 2/06 (2006.01) A61L 27/00 (2006.01) A61L 31/10 (2006.01) B29C 39/10 (2006.01) A61F 2/00 (2006.01) B29C 33/30 (2006.01) B29C 41/14 (2006.01) B29C 63/00 (2006.01)

Patent

CA 2244641

The thickness of a polymer coating applied to the interior surface of a stent precisely is controlled by fitting a mandrel within its interior. Fitment of an exterior mold serves to additionally control the thickness of polymer on the exterior surface of the stent. Alternatively, a pre-formed sheath of polymer is fitted to the interior of the stent, whereby the subsequent application of polymer not only causes the exterior to become coated but also causes the sheath to become adhered to the stent.

L'épaisseur de la couche de polymère appliquée sur la surface interne d'un stent est contrôlée au moyen d'un mandrin placé à l'intérieur. Un moule extérieur sert à contrôler également l'épaisseur d'un polymère appliqué sur la surface externe du stent. Ou bien une gaine de polymère pré-formée est placée à l'intérieur du stent, l'application subséquente de polymère ayant non seulement pour effet de recouvrir l'extérieur mais aussi de faire adhérer la gaine au stent.

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