Mucoadhesive erodible drug delivery device for controlled...

A - Human Necessities – 61 – K

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A61K 9/00 (2006.01) A61K 9/70 (2006.01)

Patent

CA 2459692

The present invention relates to a layered pharmaceutical delivery device for the administration of pharmaceuticals or other active compounds to mucosal surfaces. The device may also be used by itself without the incorporation of a therapeutic. The device of the present invention consists of a water-soluble adhesive layer, a non-adhesive, bioerodible backing layer and one or more pharmaceuticals if desired in either or both layers. Upon application, the device adheres to the mucosal surface, providing protection to the treatment site and localized drug delivery. The "Residence Time", the length of time the device remains on the mucosal surface before complete erosion, can be easily regulated by modifications of the backing layer.

La présente invention concerne un dispositif d'apport pharmaceutique en couches permettant d'administrer des produits pharmaceutiques ou d'autres composés actifs sur des surfaces de muqueuse. Ce dispositif peut également être utilisé en tant que tel sans incorporation de composé thérapeutique. Le dispositif de cette invention est constitué d'une couche adhésive soluble dans l'eau, d'une contre couche bio-érodable non adhésive et d'un ou plusieurs produits pharmaceutiques, le cas échéant, sur l'une des couches ou sur les deux couches. Lors de son application, ce dispositif adhère à la surface de la muqueuse, offrant une protection au niveau du site de traitement et permettant un apport de médicament localisé. Le <=temps de résidence>=, durée pendant laquelle ce dispositifreste sur la surface de la muqueuse avant l'érosion complète, peut facilement être régulé par des modifications de la contre couche.

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