Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Web – sheet or filament bases; compositions of bandages; or...
Patent
1997-07-22
1998-03-03
Phelan, D. Gabrielle
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Web, sheet or filament bases; compositions of bandages; or...
424449, A61F 1302
Patent
active
057231451
ABSTRACT:
The present invention provides a transdermal absorption preparation whereby a drug, which takes effect with a small amount, and is liable to be decomposed, solid at ordinary temperatures, water-soluble and less absorbable into the skin, can be stored stably for a long period of time and, can be transdermally administered at a high releasing ratio and yet releasing slowly, when applied to the skin. The constitution of the present invention is as follows: a transdermal absorption preparation which comprises a drug-storing layer containing a drug and having a drug-releasing face coated with a drug-releasing controlling membrane, wherein said drug-storing layer comprises as a base a heat-sensitive segmented polyurethane represented by the general formula:
REFERENCES:
patent: 4997656 (1991-03-01), Shikinami
Hata Kunihiro
Sasatani Seiei
Shikinami Yasuo
Sudoh Masao
Ono Pharmaceutical Co. Ltd.
Phelan D. Gabrielle
Takiron Co., Ltd.
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