Expandable medical device with openings for delivery of...

A - Human Necessities – 61 – F

Patent

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A61F 2/06 (2006.01) A61F 11/00 (2006.01)

Patent

CA 2615143

An expandable medical device includes a plurality of elongated struts, forming a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter. A plurality of different beneficial agents can be loaded into different openings within the struts for delivery to the tissue. For treatment of conditions such as restenosis, different beneficial agents are loaded into different openings in the device to address different biological processes involved in restenosis and are delivered at different release kinetics matched to the biological process treated. For example, paclitaxel and Pimecrolimus are delivered at different release kinetics to treat restenosis. The different beneficial agents may also be used to address different diseases, such as restenosis and acute myocardial infarction from the same drug delivery device.

L'invention concerne un dispositif médical expansible qui comprend une pluralité d'entretoises allongées, formant un dispositif sensiblement cylindrique pouvant passer d'un cylindre présentant un premier diamètre à un cylindre présentant un deuxième diamètre. Une pluralité d'agents bénéfiques différents peuvent être chargés dans différentes ouvertures à l'intérieur des entretoises en vue d'une administration à des tissus. Pour le traitement d'états de type resténose, différents agents bénéfiques sont chargés dans différentes ouvertures dans le dispositif afin d'adresser différents processus biologiques impliqués dans la resténose et sont administrés à des cinétiques de libération différentes correspondant au processus biologique traité. Par exemple, du paclitaxel et du Pimecrolimus sont administrés à des cinétiques de libération différentes pour le traitement de la resténose. Les différents agents bénéfiques peuvent également servir à adresser différentes maladies, notamment la resténose et l'infarctus du myocarde aigu à partir du même dispositif d'administration de médicament.

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