Composite article suitable for use as a wound dressing
AssigneeMilliken & Company
InventorsT. Andrew Canada, Martin E. Cowan, Robert M. MacMeccan, Le Zhang
Life of this patent
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Abstract
A composite article comprises a fluid transport layer, a fluid retentive layer, and, optionally, a moisture vapor permeable film. The first surface of the fluid transport layer provides a fluid contacting surface. The fluid retentive layer is positioned so that the first surface layer of the fluid retentive layer is adjacent to the second surface of the fluid transport layer. The moisture vapor permeable film is positioned so that it is adjacent to the second surface of the fluid retentive layer. The composite article is suitable for use as a wound dressing.
Claims13
A composite article comprising:
- (a) a fluid transport layer, the fluid transport layer having a first surface and a second surface, the first surface of the fluid transport layer providing a fluid contacting surface having a first surface energy, and the second surface of the fluid transport layer having a second surface energy,
- (b) a fluid retentive layer, the fluid retentive layer having a first surface and a second surface, the first surface of the fluid retentive layer having a third surface energy, and the fluid retentive layer being positioned so that the first surface of the fluid retentive layer is adjacent to the second surface of the fluid transport layer;
- and
- (c) a moisture vapor permeable film, the moisture vapor permeable film being positioned so that it is adjacent to the second surface of the fluid retentive layer, the moisture vapor permeable film exhibiting a moisture vapor transmission rate (MVTR) of about 500 g/m2/24 hr or more;
- wherein the third surface energy is greater than the second surface energy, and the second surface energy is greater than the first surface energy, and
- wherein the fluid transport layer is a knit textile material comprising a first yarn forming a plurality of interlocking loops and at least one effect yarn tucked into the interlocking loops formed by the first yarn, wherein the plurality of interlocking loops formed by the first yarn provide the second surface of the fluid transport layer, and wherein the first yarn is more hydrophilic than the effect yarn.
A wound dressing comprising:
- (a) a fluid transport layer, the fluid transport layer having a first surface and a second surface, the first surface of the fluid transport layer providing a wound contacting surface having a first surface energy, and the second surface of the fluid transport layer having a second surface energy,
- (b) a fluid retentive layer, the fluid retentive layer having a first surface and a second surface, the first surface of the fluid retentive layer having a third surface energy, and the fluid retentive layer being positioned so that the first surface layer of the fluid retentive layer is adjacent to the second surface of the fluid transport layer;
- and
- (c) a moisture vapor permeable film, the moisture vapor permeable film being positioned so that it is adjacent to the second surface of the fluid retentive layer, the moisture vapor permeable film exhibiting a moisture vapor transmission rate (MVTR) of about 500 g/m2/24 hr or more;
- wherein the third surface energy is greater than the second surface energy, and the second surface energy is greater than the first surface energy, and
- wherein the fluid transport layer is a knit textile material comprising a first yarn forming a plurality of interlocking loops and at least one effect yarn tucked into the interlocking loops formed by the first yarn, wherein the plurality of interlocking loops formed by the first yarn provide the second surface of the fluid transport layer, and wherein the first yarn is more hydrophilic than the effect yarn.
Dependencies are inferred from the claim text.