Medical devices having nanoporous coatings for controlled...

A - Human Necessities – 61 – L

Patent

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Details

A61L 29/16 (2006.01) A61L 31/16 (2006.01)

Patent

CA 2661456

According to an aspect of the present invention, implantable or insertable medical devices are provided which contain (a) one or more depressions that contain at least one therapeutic agent, and (b) a nanoporous coating, disposed over the therapeutic-agent-containing depressions, which regulate transport of species between the therapeutic-agent-containing depressions and the exterior of the device. The implantable or insertable devices are configured to perform a role beyond mere drug delivery, for example, providing mechanical and/or electrical functions within the body, among other functions. An advantage of the present invention is that medical devices may be provided, which release therapeutic agents in quantities far exceeding the void volume within the nanoporous coating, while at the same time providing functionality that extends beyond drug delivery. Such release may further approach or achieve a zero order kinetic drug release profile.

Selon un aspect de la présente invention, des dispositifs médicaux implantables ou insérables contiennent (a) un ou plusieurs creux qui contiennent au moins un agent thérapeutique, et (b) un revêtement nanoporeux, disposé sur lesdits creux, qui régule le transport des espèces entre lesdits creux et l'extérieur du dispositif. Les dispositifs implantables ou insérables sont configurés pour avoir un rôle dépassant celui de simple distributeur de médicament, par exemple, pour apporter des fonctions mécaniques et/ou électriques dans le corps, entre autres fonctions. Un avantage de la présente invention est que les dispositifs médicaux peuvent être fournis, qui libèrent des agents thérapeutiques en des quantités dépassant de beaucoup le volume des vides dans le revêtement nanoporeux, tout en ayant en même temps une fonctionnalité qui va au-delà de la libération de médicaments. Une telle libération peut en outre s'approcher ou atteindre un profil de libération de médicament cinétique de l'ordre de zéro.

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