Medicinal patch that leaves less adhesive residue when removed

Details Medicinal patch that leaves less adhesive residue when removed Medicinal patch that leaves less adhesive residue when removed

2005-03-25

2008-12-23

Lewis, Kim M (Department: 3772)

Surgery: splint, brace, or bandage

Bandage structure

Skin laceration or wound cover

C602S041000, C602S052000, C602S057000

Reexamination Certificate

active

07468470

ABSTRACT:
The medicinal patch for delivering a pharmaceutically effective ingredient by contact with skin has a backing layer (1), an effective-ingredient containing adherent layer (2) on the backing layer and a release layer (4) applied over the adherent layer (2). To eliminate a dirt ring deposited when the medicinal patch is finally removed from the skin, a plastic foil or film (3) is provided on an outer peripheral or edge region of the skin-contacting surface of the adherent matrix layer (2). The plastic foil or film, which does not adhere to the skin, can be made of polyester, hydrocarbon polymers or silicone polymers and preferably has a thickness of 15 to 75 μm with a width of 1 to 3 mm. Methods of making medicinal patches of this sort are described.

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patent: 9010256 (1997-01-01), None
patent: 95/05827 (1995-03-01), None
patent: 97/03709 (1997-02-01), None

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