Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Wearing apparel – fabric – or cloth
Patent
1994-09-08
1997-10-28
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Wearing apparel, fabric, or cloth
424401, A01N 2534
Patent
active
056815743
ABSTRACT:
A compact, single use pad applicator is disclosed having a dry medication (e.g. a dehydrated topical astringent disinfectant that is adapted to treat acne and has been reduced to crystalline form by lyophilization) stored in a first chamber. A liquid diluent is stored in a second chamber. Fluid communication between the first and second chambers is blocked by a normally closed, pressure activated valve or seal. By compressing the second chamber, a corresponding hydraulic pressure is generated in the diluent which opens the valve. Accordingly, the diluent in the second chamber is introduced under pressure to the dry medication in the first chamber to rehydrate and activate the acne medication. The reconstituted multi-constituent liquid medication is absorbed by a pad-shaped swab so as to be applied directly to a relatively wide tissue area as a topical treatment for acne or other skin disorders.
REFERENCES:
patent: 4140409 (1979-02-01), DeVries
patent: 4533540 (1985-08-01), Blank
patent: 4812067 (1989-03-01), Brown et al.
patent: 5254109 (1993-10-01), Smith et al.
patent: 5326564 (1994-07-01), LaRosa et al.
Foster Clark B.
Haber Terry M.
Smedley William H.
Fischer Morland C.
Habley Medical Technology Corporation
Howard Sharon
Page Thurman K.
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