Medical device for delivering biologically active material

A - Human Necessities – 61 – L

Patent

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Details

A61L 27/00 (2006.01) A61F 2/06 (2006.01)

Patent

CA 2474243

A medical device (10) for delivering a biologically active material into a body tissue, comprising struts (13) and optionally the biologically active material. In an embodiment, the medical device (10) comprises non-structural elements (14) integral with the struts (13). A method for designing such medical device are also disclosed. Another embodiment is a medical device having an outer surface comprising a middle section (44) and end sections (46). The end sections having a greater available surface area, greater affinity for or a greater amount of the biologically active material per unit length of the outer surface than the middle section. The middle section may be covered with a barrier layer. Another embodiment is a medical device comprising a rectangular portion having a greater capacity for carrying a biologically active material per unit length of the outer surface. A method for delivering a biologically active material to a body tissue is also disclosed.

L'invention concerne un dispositif médical conçu pour administrer à un tissu corporel une matière bioactive, comprenant des étais et éventuellement ladite matière bioactive. Dans un mode de réalisation, le dispositif médical comprend des éléments non structurels solidaires des étais. L'invention concerne également un procédé de conception d'un tel dispositif médical. Dans un autre mode de réalisation, elle concerne un dispositif médical dont une surface externe comprend une section intermédiaire et des sections terminales. Ces dernières présentent une aire spécifique disponible plus grande, une affinité plus grande pour la matière bioactive ou une dose de celle-ci par unité de longueur de la surface externe plus grande que la section intermédiaire. Cette dernière peut être recouverte d'une couche barrière. Dans un autre mode de réalisation, le dispositif médical comprend une partie rectangulaire ayant une plus grande capacité de transport de matière bioactive par unité de longueur de la surface externe. L'invention concerne enfin un procédé permettant d'administrer à un tissu corporel une matière bioactive.

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