Transdermal patch incorporating active agent migration barrier layer
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United States of America Patent
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Sep 3, 2013
Grant Date -
Feb 17, 2005
app pub date -
Aug 15, 2003
filing date -
Aug 15, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
Devices for administration of one or more active agents to the skin or mucosa of a host are formed in the nature of a double-disk patch. One outer layer functions as the primary adhesive layer for adhering the patch to the host. The other inner layer contains at least one active agent to be administered to the host. The inner layer is bonded to the outer layer through an opening provided in an interposed active agent impermeable release layer. The release layer separates a circumferential portion of the active agent containing inner layer from the outer adhesive layer to inhibit migration of the active agent therebetween.
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