Wound dressing
AssigneeOssur Hf
InventorsGudmundur Fertram Sigurjonsson, Thordur M. Elefsen, Palmar I. Gudnason
Life of this patent
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Abstract
A wound dressing includes an absorbent core defining opposed proximal and distal surfaces including a central portion and a border portion, and a liquid impervious, vapor permeable backing layer connected to the distal surface of the absorbent core. The backing layer defines a border portion extending beyond the periphery of the absorbent core. A skin adherent, perforated facing layer is secured to the proximal surface of the absorbent core. An adhesive layer is applied to at least a proximal segment of the border portion of the backing layer and has greater skin adherence properties than the facing layer.
Claims20
A wound dressing having opposed outermost backside and bodyside surfaces, the bodyside surface being generally planar and defines the outermost surface on a proximal side of the dressing intended to be directly placed adjacent a wound surface, the dressing comprising:
- an absorbent core defining opposed proximal and distal surfaces, the distal surface including a central portion and a border portion;
- a liquid impervious, vapor permeable backing layer defining opposed proximal and distal surfaces, a central portion of the proximal surface of the backing layer extending over the distal surface of the absorbent core, and the backing layer defining a border portion extending beyond and surrounding peripheral edges of the absorbent core, the distal surface of the backing layer defining the backside surface of the wound dressing;
- a first skin adherent and hydrophobic facing layer directly secured to the proximal surface of the border portion of the backing layer and surrounding the peripheral edges of the absorbent core, a proximal surface of the first facing layer defining a portion of the bodyside surface of the wound dressing;
- and
- a second skin adherent and hydrophobic facing layer secured to the proximal surface of the absorbent core, a proximal surface of the second facing layer defining a portion of the bodyside surface of the wound dressing, a periphery of the second facing layer being contiguous with a periphery of the first facing layer, the second facing layer defining a pattern of through extending apertures arranged across the second facing layer;
- wherein the tackiness of the first facing layer is within the range of 0.5 N to 5.0 N, and the second facing layer is within the range of 0.05 N-1.0 N.
A wound dressing having opposed outermost backside and bodyside surfaces, the bodyside surface being generally planar and defines the outermost surface on a proximal side of the dressing intended to be directly placed adjacent a wound surface, the dressing comprising:
- a polymeric-foam based absorbent core defining opposed proximal and distal surfaces, the distal surface including a central portion and a border portion;
- a liquid impervious, vapor permeable backing layer defining opposed proximal and distal surfaces, the backing layer defining a central portion wherein the proximal surface of the backing layer in the central portion thereof extends over the absorbent core, the backing layer defining a border portion extending beyond and surrounding peripheral edges of the absorbent core, the distal surface of the backing layer defining the backside surface of the wound dressing;
- the backing layer carrying a skin adherent adhesive along the proximal surface of the border portion thereof, the skin adherent adhesive defining a portion of the bodyside surface of the wound dressing;
- and
- a skin-adhering hydrophobic silicone-based facing layer directly bonded to the proximal surface of the absorbent core, a proximal surface of the facing layer defining a portion of the bodyside surface of the wound dressing, the border portion of the backing layer adjacent to and surrounding peripheral edges of the facing layer, the facing layer defining a grid pattern of through-extending apertures arranged across the facing layer and non-apertured regions surrounding the apertures, the thickness of the non-apertured regions consisting the silicone-based compound;
- wherein the tackiness of the first facing layer is within the range of 0.5 N to 5.0 N, and the second facing layer is within the range of 0.05 N-1.0 N.
A wound dressing having opposed outermost backside and bodyside surfaces, the bodyside surface being generally planar and defines the outermost surface on a proximal side of the dressing intended to be directly placed adjacent a wound surface, the dressing comprising:
- a polymeric-foam based absorbent core defining opposed proximal and distal surfaces, the distal surface including a central portion and a border portion;
- a liquid impervious, vapor permeable backing layer defining opposed proximal and distal surfaces, the proximal surface of the backing layer over the absorbent core;
- a first skin adherent and hydrophobic facing layer directly secured to the proximal surface of the border portion of the absorbent core, a proximal surface of the first facing layer defining a portion of the bodyside surface of the wound dressing;
- and
- a second skin adherent and hydrophobic facing layer secured to the proximal surface of the absorbent core, a proximal surface of the second facing layer defining a portion of the bodyside surface of the wound dressing, a periphery of the second facing layer being contiguous with a periphery of the first facing layer, the second facing layer defining a pattern of through extending apertures arranged across the second facing layer;
- wherein the tackiness of the first facing layer is within the range of 0.5 N to 5.0 N, and the second facing layer is within the range of 0.05 N-1.0 N.
Dependencies are inferred from the claim text.