Flat process of drug coating of stents

A - Human Necessities – 61 – L

Patent

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A61L 33/00 (2006.01)

Patent

CA 2642554

A drug-coated stent and a method for fabricating the stent are disclosed. The stent has an originally flat pattern and connection points where the sides of the flat pattern are joined. The method includes the steps of a) cutting a stent pattern into a flat piece of metal thereby to produce a metal pattern, b) spraying the flat metal stent pattern with a polymer and a drug, c) deforming the metal pattern so as to cause two opposing sides to meet, and d) joining the two opposing sides a least at one point. Substantially no portion of the stent projects into the lumen of the stent when the stent is expanded against the internal wall of a blood vessel.

L'invention concerne un stent revêtu de médicament et un procédé destiné à fabriquer ce stent. Le stent de l'invention possède une forme à l'origine plate et des points d'assemblage au niveau desquels les côtés de la forme plate sont assemblés. Ce procédé comprend les étapes consistant a) à découper une forme de stent dans une pièce métallique plate afin de produire une forme métallique, b) à pulvériser la forme de stent métallique plate avec un polymère et un médicament, c) à déformer la forme métallique de manière à faire se rencontrer deux côtés opposés, et d) à assembler les deux côtés opposés au moins au niveau d'un point. Sensiblement aucune partie du stent ne se projette dans la lumière du stent lorsque celui-ci est déployé contre la paroi interne d'un vaisseau sanguin.

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