Internal medical devices containing peroxide-converting...

A - Human Necessities – 61 – L

Patent

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Details

A61L 31/16 (2006.01) A61L 31/08 (2006.01)

Patent

CA 2642735

The present invention is directed to implantable and insertable medical devices (also referred to herein as internal medical devices), which contain one or more peroxide- converting catalysts. According to an aspect of the invention, internal medical devices are provided, which contain (a) a substrate and (b) a peptide-containing, peroxide- converting catalyst disposed over at least a portion of the substrate. According to another aspect of the invention, internal medical devices are provided which contain a catalyst binding entity. The catalyst binding entity is adapted to bind to endogenous peroxide- converting catalyst upon implantation or insertion of the devices into patients. In another aspect of the invention, internal medical devices are provided which contain a biodegradable region that in turn contains a peroxide-converting catalyst. These devices release the catalyst in conjunction with degradation of the biodegradable region. In yet another aspect of the invention, internal medical devices are provided which contain a substrate, a multilayer region disposed over at least a portion of the substrate, and a peroxide-converting catalyst disposed within the multilayer region. The multilayer region, in turn, contains a plurality of charged layers of alternating charge, which charged layers further contain a plurality of polyelectrolyte containing layers.

La présente invention porte sur des dispositifs médicaux implantables et insérables (également appelés ici dispositifs médicaux internes), contenant un ou plusieurs catalyseurs de conversion de peroxyde. Selon un aspect de l~invention, les dispositifs médicaux internes contiennent (a) un substrat et (b) un catalyseur de conversion de peroxyde contenant un peptide, recouvrant au moins une partie du substrat. Selon un autre aspect de l~invention, les dispositifs médicaux internes contiennent une entité de liaison de catalyseur. L~entité de liaison de catalyseur est adaptée pour se lier à un catalyseur de conversion de peroxyde endogène en cas d~implantation ou d~insertion des dispositifs chez des patients. Selon un autre aspect de l~invention, les dispositifs médicaux internes contiennent une région biodégradable qui contient à son tour un catalyseur de conversion de peroxyde. Ces dispositifs libèrent le catalyseur en combinaison avec la dégradation de la région biodégradable. Selon un aspect supplémentaire de l~invention, les dispositifs médicaux internes contiennent un substrat, une région multicouche recouvrant au moins une partie du substrat, et un catalyseur de conversion de peroxyde disposé dans la région multicouche. La région multicouche, quant à elle, contient une pluralité de couches chargées dont la charge est alternée, lesquelles couches chargées contiennent en outre une pluralité de couches contenant un polyélectrolyte.

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