Controlled release implantable devices

A - Human Necessities – 61 – L

Patent

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A61L 31/16 (2006.01)

Patent

CA 2380111

Implantable devices that deliver a drug to a target lo- cation are disclosed. In general, the devices include a portion that engages tissue near the target location and a section with an inter- nal cavity that houses the drug. The drug can be incorporated into a controlled release agent, such as drug-polymer microspheres, which steadily or intermittently release the drug. Alternatively, instead of defining an internal cavity, the section can be formed from a material that includes the controlled release agent. The devices can be used, e.g., to deliver down-regulatory cytokines to a site of inflammation.

L'invention concerne des dispositifs implantables permettant d'administrer un médicament au niveau d'une zone cible. Généralement, ces dispositifs comprennent une partie destinée à traverser le tissu au voisinage de cette zone cible ainsi qu'une section pourvue d'une cavité interne renfermant le médicament en question. Celui-ci peut être intégré à un agent de libération régulée, tel que des microsphères polymériques médicamenteuses permettant de libérer un médicament de façon régulière ou intermittente. Dans un autre mode de réalisation, ladite section, au lieu de définir une cavité interne, peut être elle-même constituée d'une matière comprenant cet agent de libération régulée. Ces dispositifs peuvent servir à administrer des cytokines, par exemple, au niveau d'une zone enflammée.

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