Foam Dressing With Integral Porous Film

Abstract

Wound dressings and wound inserts comprising a porous film layer and at least a channel, wound inserts of forming wound inserts comprising a porous film layer and at least a channel, and wound-treatment wound inserts.

We claim: 
     
         1 . A negative-pressure wound treatment system, comprising:
 a wound insert comprising a foam member having a felted surface configured to face a wound, wherein at least one channel is formed into the felted surface, the at least one channel having a depth extending through the felted surface;   a drape configured to be placed over the wound and the wound insert; and   a wound treatment apparatus fluidly coupled to the wound insert, the wound treatment apparatus configured to apply negative pressure to the wound insert.   
     
     
         2 . The system of  claim 1 , wherein the foam member is configured to be disposed between the wound and the drape, wherein the drape is coupled to skin adjacent the wound. 
     
     
         3 . The system of  claim 1 , wherein the at least one channel is defined by material removed from the felted surface. 
     
     
         4 . The system of  claim 1 , wherein the foam member comprises an open-celled reticulated foam. 
     
     
         5 . The system of  claim 1 , wherein the depth of the at least one channel is greater than a thickness of the felted surface. 
     
     
         6 . The system of  claim 1 , wherein the felted surface is a first felted surface, and wherein the foam member further comprises a second felted surface. 
     
     
         7 . The system of  claim 1 , wherein the at least one channel is an elongate channel. 
     
     
         8 . The system of  claim 1 , wherein the at least one channel intersects an edge of the felted surface. 
     
     
         9 . The system of  claim 1 , wherein the at least one channel has a closed shape. 
     
     
         10 . The system of  claim 1 , wherein a plurality of channels are formed into the felted surface. 
     
     
         11 . The system of  claim 1 , wherein the at least one channel has a circular shape. 
     
     
         12 . The system of  claim 1 , wherein the wound treatment apparatus comprises a vacuum source. 
     
     
         13 . The system of  claim 12 , further comprising a conduit fluidly coupling the vacuum source to the wound insert. 
     
     
         14 . The system of  claim 13 , wherein the wound treatment apparatus further comprises a fluid source. 
     
     
         15 . The system of  claim 14 , wherein the fluid source is configured to deliver the fluid through the conduit to the wound insert. 
     
     
         16 . The system of  claim 14 , further comprising a pump configured to deliver the fluid from the fluid source to the wound insert through the conduit. 
     
     
         17 . The system of  claim 16 , wherein the fluid comprises an irrigation fluid. 
     
     
         18 . The system of  claim 13 , further comprising a wound dressing connection pad configured to be coupled to the conduit. 
     
     
         19 . The system of  claim 17 , further comprising a pressure sensor configured to sense a pressure between the drape and the wound. 
     
     
         20 . The system of  claim 19 , wherein the pressure sensor is fluidly coupled to the conduit.