Adhesive bioerodible transmucosal drug delivery system

A - Human Necessities – 61 – K

Patent

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A61K 9/70 (2006.01)

Patent

CA 2535846

The present invention is directed to a mucoadhesive delivery system for the local or systemic administration of a pharmaceutical agent. The delivery system of the invention effectively and facilely enables transport of the pharmaceutical agent through mucosal membranes and into the vasculature of the mucosa. The delivery system includes an at least partially water soluble bioadhesive layer and an at least partially water soluble backing layer. Incorporated within either or both of these layers are the pharmaceutical agent and a mucosal penetration enhancing agent. The mucosal penetration enhancing agent displays localized tissue irritation properties. The mucoadhesive delivery system may be in the form of a gel, film, disc or patch. It may be applied to any mucosal membrane of a patient including but not limited to those of the buccal and nasal cavities, throat, eye, vagina, alimentary tract and peritoneum.

La présente invention concerne un système d'administration adhésif aux muqueuses, permettant l'administration locale ou systémique d'un agent pharmaceutique. Le système d'administration de l'invention permet de façon simple et efficace le transport de l'agent pharmaceutique à travers les muqueuses et à l'intérieur des vaisseaux des muqueuses. Le système d'administration comprend une couche bioadhésive au moins partiellement soluble dans l'eau et une couche de recouvrement au moins partiellement soluble dans l'eau. Un agent pharmaceutique et un agent d'amélioration de la pénétration à travers la muqueuse, sont incorporés à au moins l'une de ces couches. L'agent d'amélioration de la pénétration à travers la muqueuse se caractérise par des propriétés d'irritation tissulaire localisée. Le système d'administration adhésif aux muqueuses peut se présenter sous la forme d'un gel, d'un film, d'un disque ou d'un patch. Il peut être appliqué sur toute muqueuse d'un patient, y compris, entre autres, la cavité buccale et la cavité nasale, la gorge, l'oeil, le vagin, le tube digestif et le péritoine.

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