Pad applicator for a rehydrated multi-constituent medication
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United States of America Patent
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Oct 28, 1997
Grant Date -
N/A
app pub date -
Sep 8, 1994
filing date -
Sep 8, 1994
priority date (Note) -
Expired
status (Latency Note)
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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.
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