Barrier film lined backing layer composition and method for...

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Web – sheet or filament bases; compositions of bandages; or...

Reexamination Certificate

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Details

C424S449000

Reexamination Certificate

active

07063859

ABSTRACT:
A transdermal drug delivery device for topical application of active agents is disclosed. The invention comprises the use of a flexible and soft backing layer, in particular a cellular foam, having an inner surface and an outer surface, wherein an impermeable polymeric barrier film is affixed to its inner surface. The barrier film functions to anchor and support an active agent carrier composition disposed thereon, and to prevent passage of such composition into the backing layer. The system provides excellent flexibility and conformability for topical application to sites subject to frequent movement or which are greatly contoured. Methods of use are also disclosed.

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