Transdermal and transmucosal vortexed foam devices and the method of making
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United States of America Patent
Stats
-
Mar 10, 1987
Grant Date -
N/A
app pub date -
Aug 9, 1984
filing date -
Aug 9, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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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