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US 11,786,412 B2Granted
Dermal patch
AssigneeCarl Freudenberg KG
InventorsThomas Hofbauer, Daniela Beyer, Sandra Villing-Falusi
Life of this patent
Estimating the term…
Abstract
A dermal patch includes: an open-cell foam layer; and an adhesive layer arranged thereon and intended for contact with skin. At least a side of the foam layer facing the adhesive layer has macropores whose cavities are spanned at least partially by a barrier layer formed from the foam layer.
Claims18
A dermal patch, comprising:
- an open-cell foam layer having macropores with cavities;
- a barrier layer formed from the foam layer on one side of the foam layer and at least partially comprising a surface of the foam layer, the barrier layer at least partially spanning the cavities, wherein the barrier layer and the foam layer are integrally formed as a single structure, and wherein the barrier layer has a thickness of 0.3 μm to 20 μm;
- and
- an adhesive layer disposed on the barrier layer and configured for contact with skin.
1 more element
A dermal patch, comprising:
- an open-cell foam layer having macropores with cavities;
- a barrier layer formed from the foam layer on one side of the foam layer and at least partially comprising a surface of the foam layer, the barrier layer at least partially spanning the cavities and having a thickness of 0.3 μm to 20 μm;
- and
- an adhesive layer disposed on the barrier layer and configured for contact with skin,
- wherein the barrier layer is configured to partially prevent penetration of adhesive from the adhesive layer into the foam layer.
2 more elements
A dermal patch, comprising:
- an open-cell foam layer having macropores with cavities;
- a barrier layer formed from the foam layer on one side of the foam layer and at least partially comprising a surface of the foam layer, the barrier layer at least partially spanning the cavities, wherein the barrier layer is configured to increase permeability of wound exudate, sweat, or water vapor, and wherein the barrier layer has a thickness of 0.3 μm to 20 μm;
- and
- an adhesive layer disposed on the barrier layer and configured for contact with skin.
1 more element
Dependencies are inferred from the claim text.