Stents with drug eluting coatings

A - Human Necessities – 61 – L

Patent

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Details

A61L 27/34 (2006.01) A61L 27/54 (2006.01) A61L 29/08 (2006.01) A61L 29/16 (2006.01) A61L 31/10 (2006.01) A61L 31/16 (2006.01)

Patent

CA 2668130

Provided is a coated medical device (e.g., a stent) comprising one or more surfaces having dispersed thereon a plurality of microparticles comprising an active pharmaceutical ingredient (API) and a polymer. Specifically, the microparticles are disposed on a device surface in a microparticulate phase coating, i.e., as discrete microparticles in the absence of a continuous phase coating. The medical device effectively adheres one or more APIs to its surface, and allows controlled release of the APIs from the device surface to a desired treatment area by using a minimal amount of polymer. The medical device is suitable for insertion or implantation into a subject, preferably a human. Also provided are methods for preparing and using the coated medical device.

Cette invention concerne un dispositif médical (par exemple une endoprothèse vasculaire) recouvert d'un enduit, une ou plusieurs surfaces dudit dispositif comportant plusieurs microparticules dispersées qui renferment un principe pharmaceutique actif et un polymère. Spécifiquement, les microparticules sont disposées sur une surface du dispositif dans un enrobage à phase microparticulaire (sous forme de microparticules discrètes) en l'absence d'un enrobage à phase continue. Le dispositif médical colle effectivement, sur sa surface, un ou plusieurs principes pharmaceutiques actifs, et permet d'administrer, de manière contrôlée, lesdits principes pharmaceutiques actifs depuis la surface du dispositif vers une zone de traitement souhaitée en utilisant une quantité minimale de polymère. Le dispositif médical convient pour être inséré ou implanté chez un sujet, de préférence l'homme. L'invention propose également des procédés permettant de préparer et d'utiliser le dispositif médical recouvert d'un enduit.

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