Wound dressing

Abstract

The present invention relates to wound dressings which are particularly useful (but not necessarily exclusively) on moderate to heavily exuding wounds comprising: an absorbent pad having a first major face comprised of absorbent material and configured for wound contact, and a second major face opposed to the first major face; and a backing layer bonded to the second major face of the pad; wherein the pad and the backing layer are sized such that the backing layer extends beyond the periphery of the pad, thereby defining a margin; wherein the margin of the backing layer is provided with a first adhesive for adhering the backing layer to skin; and wherein a layer of second, low trauma adhesive is provided on, and in direct contact with, the first major face of the pad for adhering the pad to a wound, said layer of second, low trauma adhesive being configured to allow passage of exudate from the wound to the absorbent pad.

1 . A wound dressing comprising:
 an absorbent pad having a first major face comprised of absorbent material and configured for wound contact, and a second major face opposed to the first major face; and   a backing layer bonded to the second major face of the pad;   wherein the pad and the backing layer are sized such that the backing layer extends beyond the periphery of the pad, thereby defining a margin;   wherein the margin of the backing layer is provided with a first adhesive for adhering the backing layer to skin; and   wherein a layer of second, low trauma adhesive is provided on, and in direct contact with, the first major face of the pad for adhering the pad to a wound, said layer of second, low trauma adhesive being configured to allow passage of exudate from the wound to the absorbent pad.   
     
     
         2 . The wound dressing according to  claim 1 , wherein the second adhesive is selected from silicone-based adhesives, sheet hydrogels, polyurethane-based adhesives and modified polyolefin-based adhesives. 
     
     
         3 . The wound dressing according to  claim 1 , wherein the second adhesive is a silicone-based adhesive. 
     
     
         4 . The wound dressing according to  claim 1 , wherein the layer of second, low trauma adhesive is a discontinuous layer. 
     
     
         5 . The wound dressing according to  claim 4 , wherein the discontinuous layer of second, low trauma adhesive has an open area of greater than 50%. 
     
     
         6 . The wound dressing according to  claim 1 , wherein the layer of second, low trauma adhesive is printed onto the first major face of the pad. 
     
     
         7 . The wound dressing according to  claim 1 , wherein the second adhesive has a peel strength of 0.1 to 1.0N/2.5 cm. 
     
     
         8 . The wound dressing according to  claim 1 , wherein the first adhesive has a peel strength of 3.0 to 7.0N/2.5 cm. 
     
     
         9 . The wound dressing according to  claim 1 , wherein the first adhesive is selected from acrylic-based adhesives, aqueous-based adhesives, and hydrocolloids. 
     
     
         10 . The wound dressing according to  claim 1 , wherein the margin of the backing layer and/or the first major face of the pad is provided with an antimicrobial agent. 
     
     
         11 . The wound dressing according to  claim 10 , wherein the antimicrobial agent is selected from silver, silver compounds, iodine, iodine compounds, or polyhexamethylene biguanide (PHMB). 
     
     
         12 . The wound dressing according to  claim 1 , wherein the margin of the backing layer and/or the first major face of the pad is provided with an anti-biofilm agent. 
     
     
         13 . A wound dressing substantially as hereinbefore described with reference to the figures. 
     
     
         14 . A process for manufacturing a wound dressing, the process comprising the steps of:
 (a) providing a backing layer;   (b) providing a pad of absorbent material having a first major face comprised of absorbent material and configured for wound contact, and a second major face opposed to the first major face; and   (c) bonding the second major face of the pad of absorbent material to the backing layer;   wherein the pad is provided with a layer of second, low trauma adhesive on, and in direct contact with, the first major face of the pad.   
     
     
         15 . The process for manufacturing a wound dressing according to  claim 14 , wherein the first major face of the pad of absorbent material is provided with the layer of second, low trauma adhesive prior to bonding the second major face of the pad of absorbent material to the backing layer.