Lattice dressing
AssigneeSmith & Nephew, Inc.
InventorsBryan Greener, Allan Freedline
Life of this patent
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Abstract
A wound dressing, a method of manufacturing a wound dressing, and in particular to a material for use as and in a wound dressing. A wound dressing can comprise a material movable between an initial conformation and an expanded conformation resulting from applying an extensive force to the material, such that removal of the extensive force can cause a contraction of the material toward a center of a wound. In addition, the wound dressing can comprise a retaining mechanism removably coupled to the material and configured to retain the material in the expanded conformation.
Claims30
A wound dressing comprising:
- an open lattice comprising:
- a porous wound dressing material;
- a film coupled to a wound contact surface of the porous wound dressing material;
- a plurality of open apertures in the porous wound dressing material;
- and
- a plurality of open apertures in the film coupled to the wound contact surface of the porous wound dressing material, the plurality of open apertures in the film being aligned with the open apertures formed in the porous wound dressing material;
- and
- a layer coupled with a non-wound contact surface of the porous wound dressing material of the open lattice and configured to support the open lattice in an open lattice conformation before the wound dressing is applied to a wound, the non-wound contact surface of the porous wound dressing material being opposite to the wound contact surface of the porous wound dressing material.
A wound dressing comprising:
- a material comprising:
- a foam layer;
- a film coupled with at least one surface of the foam layer;
- and
- a plurality of slits extending through the material so as to form a plurality of apertures that extend through the foam layer;
- an initial conformation;
- and
- an expanded conformation resulting from an application of an isotropic extensive force to the material wherein removal of the extensive force causes a contraction of the material directed toward a center of a wound;
- and
- a releasable backing layer removably coupled to the material;
- wherein:
- the material is an open lattice material comprising a plurality of slits extending through the foam layer aligned with a plurality of slits extending through the film forming a plurality of apertures that extend through the foam layer and the film;
- the plurality of apertures are in an open configuration in the expanded conformation such that the plurality of apertures are in an open configuration;
- and
- the backing layer is releasably applied to the material when the material is in its expanded conformation so that the wound dressing can be applied to a wound with the plurality of apertures being in the open configuration.
A wound dressing comprising:
- a material comprising:
- a plurality of apertures, wherein each aperture is surrounded by a plurality of apertures having a different geometric orientation than the apertures surrounded by the plurality of apertures;
- an initial conformation;
- an expanded conformation resulting from an application of an external stimulus to the material, wherein removal of the external stimulus causes a contraction of the material to the initial conformation;
- and
- a film coupled with the material when the material is in the expanded conformation;
- wherein the film is configured to support the material such that the plurality of apertures are held in an open configuration.
Dependencies are inferred from the claim text.