Open-celled substrates for drug delivery

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/00 (2006.01) A61M 11/04 (2006.01) A61M 15/06 (2006.01)

Patent

CA 2462576

The present invention relates to the delivery of drugs through an inhalation route. Specifically, it relates to the information of drug thermal vapors from a heated open-celled substrate (106) for use in inhalation therapy. In a method aspect of the present invention, a method of delivering a drug to a mammal through an inhalation route is provided which comprises heating a composition to form a thermal vapor, which is inhaled by the mammal, wherein the composition comprises a drug, and wherein the composition is coated onto a substrate, and wherein the substrate has a high surface to volume ratio, high porosity, and a three-dimensional network of interconnected cells. In a device aspect of the present invention, a device for delivering a drug to a mammal through an inhalation route is provided, wherein the device comprises: a power source (108) ; a substrate (106), wherein the substrate has a high surface to volume ratio, high porosity, and a three-dimensional network of interconnected cells; and, an element (110) permitting the mammal to inhale the thermal vapor. In a kit aspect of the present invention, a kit for delivering a drug to a mammal through an inhalation route is provided which comprises: a) a composition comprising a drug; and b) a device that forms a drug thermal vapor from the composition for inhalation by the mammal, wherein the device comprises a substrate, and wherein the substrate has a high surface to volume ratio, high porosity, and a three-dimensional network of interconnected cells.

la présente invention concerne l'administration de médicaments à inhaler. Plus particulièrement, l'invention concerne la formation de vapeurs médicamenteuses chaudes à partir d'un substrat (106) chauffé à cellules ouvertes pour inhalothérapie. Selon un aspect de l'invention, la méthode d'administration de médicaments à un mammifère par voie respiratoire consiste à chauffer une composition renfermant un médicament pour obtenir de la vapeur chaude destinée à être inhalée, cette composition étant appliquée sur un substrat, lequel substrat présente un rapport surface-volume élevé, une forte porosité et un réseau en trois dimensions de cellules interconnectées. Un autre aspect de l'invention concerne sur un dispositif utilisé pour administrer un médicament à un mammifère par voie respiratoire, lequel dispositif comprend : une alimentation (108) ; un substrat (106) caractérisé par un rapport surface-volume élevé, une grande porosité et un réseau en trois dimensions de cellules interconnectées ; et un élément (110) permettant à un mammifère d'inhaler les vapeurs chaudes. Un autre aspect encore concerne une trousse permettant administrer un médicament à un mammifère par voie respiratoire, qui comprend: a) une compositions renfermant le médicament; et b) un dispositif qui forme, à partir de la composition, une vapeur chaude médicamenteuse à inhaler, lequel dispositif comprend un substrat caractérisé par un rapport surface-volume élevé, une grande porosité et un réseau en trois dimensions de cellules interconnectées.

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