Occlusive wound dressing and applicator with same flexibility
First Claim
1. A wound dressing comprising:
- a highly flexible thin film layer having a transverse axis;
an adhesive layer provided on said flexible thin film layer; and
a highly flexible release backing film layer releasably attached directly to said adhesive layer, said release backing layer being divided into at least two backing pieces, said backing pieces having substantially the same flexibility as said flexible thin film layer and attached directly to said adhesive layer, a first of said backing pieces releasably attached to said adhesive layer on one side of said transverse axis of said flexible thin film layer and a second of said backing pieces releasably attached to said adhesive layer on another side of said transverse axis of said flexible thin film layer, each of said backing pieces having a pull-tab attached thereto, each said pull-tab flexible film material having substantially the same flexibility as said flexible thin film layer, each said pull-tab extending away from said transverse axis of said flexible thin film layer.
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Accused Products
Abstract
A thin film wound dressing that is particularly easy to position accurately and apply smoothly to form an occlusive seal comprises three layers: a first wound covering layer being permeable to gases and water vapor while being impermeable to microbes and liquids; a second adhesive layer intimately disposed on the first layer for use in occlusively attaching the invention to skin or wound surfaces; and a third release backing layer disposed on the second adhesive layer. The release backing layer has a functionally contiguous or integral pull-tab attached in a manner that creates a substantially U-shaped release backing/pull-tab assembly. The release backing and pull-tab portions of the assembly are highly flexible while also being highly resistant to elongation to facilitate the smooth and wrinkle-free application of the first and second layers to skin or wound surfaces and formation of an occlusive, microbe and liquid impermeable barrier. The various layers of the invention are preferably transparent to light and may be impregnated or coated with antiseptics, antimicrobials or other medically active substances. The wound dressing is provided in non-polygonal shapes that eliminate redundant surface area and increase the effective adhesion to anatomic surfaces.
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Citations
52 Claims
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1. A wound dressing comprising:
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a highly flexible thin film layer having a transverse axis; an adhesive layer provided on said flexible thin film layer; and a highly flexible release backing film layer releasably attached directly to said adhesive layer, said release backing layer being divided into at least two backing pieces, said backing pieces having substantially the same flexibility as said flexible thin film layer and attached directly to said adhesive layer, a first of said backing pieces releasably attached to said adhesive layer on one side of said transverse axis of said flexible thin film layer and a second of said backing pieces releasably attached to said adhesive layer on another side of said transverse axis of said flexible thin film layer, each of said backing pieces having a pull-tab attached thereto, each said pull-tab flexible film material having substantially the same flexibility as said flexible thin film layer, each said pull-tab extending away from said transverse axis of said flexible thin film layer. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 34, 35, 36, 38, 39, 40, 41)
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2. A wound dressing comprising:
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a highly flexible thin film layer having a bonding surface and an external surface; an adhesive layer provided on said bonding surface of said flexible thin film layer; a highly flexible release backing film layer releasably attached directly to said adhesive layer, said release backing layer having a single backing piece and a pull-tab, said single backing piece and said pull-tab having substantially the same flexibility as said flexible thin film layer, said single backing piece being releasably attached to said adhesive layer, said pull-tab being attached to one end of said backing piece; and an affixation tab disposed on said external surface of said flexible thin film layer. - View Dependent Claims (32, 33, 37, 42, 43, 44, 45, 46, 47)
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3. A wound dressing comprising:
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a flexible thin film layer; an adhesive layer provided on said flexible thin film layer; and a highly flexible release backing film layer releasably attached directly to said adhesive layer, and having substantially the same flexibility as said flexible thin film layer, said flexible release backing layer having at least one backing piece releasably attached to said adhesive layer and a pull-tab attached to said at least one backing piece. - View Dependent Claims (48, 49)
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4. A wound dressing comprising:
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a highly flexible thin film layer; an adhesive layer provided on said flexible thin film layer; and a highly flexible release backing film layer releasably attached directly to said adhesive layer, and having substantially the same flexibility as said flexible thin film layer. - View Dependent Claims (50, 51)
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5. A wound dressing consisting essentially of:
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a highly flexible thin film layer; an adhesive layer provided on said flexible thin film layer; and a highly flexible release backing film layer releasably attached directly to said adhesive layer and having substantially the same flexibility as said flexible thin film layer. - View Dependent Claims (52)
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6. A wound dressing comprising:
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a highly flexible thin film layer made of polyurethane; an adhesive layer provided on said flexible thin film layer; and a highly flexible release backing layer releasably attached directly to said adhesive layer, said flexible release backing layer made of polyurethane and having substantially the same flexibility as said flexible thin film layer.
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Specification