Transdermal and transmucosal vortexed foam devices and the metho

Details Transdermal and transmucosal vortexed foam devices and the metho Transdermal and transmucosal vortexed foam devices and the metho

1984-08-09

1987-03-10

Griffin, Ronald W.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283166, 428905, 424449, A61M 3100, A61F 1320, A61L 1500

Patent

active

046490752

ABSTRACT:
A device for delivery of medicaments to epidermal and mucosal surfaces, comprising a microporous outer portion made from polymeric foam, and a macroporous inner portion made from polymeric foam disposed within the outer portion and in substantial communication with the outer portion which is adapted for incorporating a medicament therein, wherein the macroporous inner portion has at least one free surface not in communication with the microporous outer portion, and the pore size ratio of the macroporous inner portion to the microporous outer portion is between about 2 to 1 and 1.67 to 1.

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