Hydrophilic coatings for medical implements

A - Human Necessities – 61 – L

Patent

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Details

A61L 31/10 (2006.01) A61L 29/08 (2006.01) A61M 5/178 (2006.01) C08G 63/688 (2006.01) G01N 21/78 (2006.01)

Patent

CA 2427428

Compositions, methods, devices and kits utilizing water-based hydrophilic coating formulations on medical implements. The composition for applying a coating comprises a sulfonated polyester, water, and a surface active agent. Methods for coating a medical implement comprise providing an aqueous dispersion comprising sulfonated polyester and surface active agent, contacting the medical implement with the aqueous dispersion, and drying the medical implement. Methods for acquiring a sample of bodily fluid from a patient comprise coating a needle with a sulfonated polyester, penetrating the needle into the patient, and drawing bodily fluid through the needle.

L'invention porte sur des compositions, des méthodes, des dispositifs et des trousses faisant appel à des préparations hydrophiles à base d'eau destinées à enrober des dispositifs médicaux. La composition servant de revêtement contient un polyester sulfoné, de l'eau et un agent de surface actif. Les méthodes permettant d'appliquer le revêtement sur le dispositif médical comprennent les étapes suivantes : obtenir une dispersion en solution aqueuse contenant un polyester sulfoné et un agent de surface actif, mettre en contact le dispositif médical avec la solution aqueuse de dispersion et sécher le dispositif médical. Les méthodes permettant de prélever un échantillon de liquide biologique chez un patient comprennent les étapes suivantes : enrober une aiguille avec un polyester sulfoné, insérer l'aiguille dans le patient et retirer le liquide biologique par l'aiguille.

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