Multi-layer abdominal closure dressing with instillation capabilities

Abstract

A treatment system for applying negative pressure therapy and fluid instillation treatment to a tissue site, particularly an abdominal tissue site, is disclosed. In some embodiments, the treatment system may include a dressing member, a plurality of fluid removal pathways, a fluid instillation matrix, a drape, a negative-pressure source, and a fluid instillation source. Instillation fluid may be delivered from the fluid instillation source to the tissue site through the fluid instillation matrix, and negative pressure may be communicated and fluid withdrawn from the tissue site through the plurality of fluid removal pathways.

1 .- 65 . (canceled) 
     
     
         66 . A dressing for treating a tissue site, comprising:
 a dressing member comprising a first impermeable layer and a second impermeable layer and a space between the first impermeable layer and the second impermeable layer;   a plurality of fluid removal pathways positioned within the space of the dressing member;   a fluid instillation matrix associated with the dressing member and comprising a plurality of fluid delivery pathways;   a central manifold member positioned adjacent a central portion of the dressing member; and   a drape adapted to form a fluid seal around the dressing member and the central manifold member.   
     
     
         67 . The dressing of  claim 66 , wherein the central manifold member comprises a foam. 
     
     
         68 . (canceled) 
     
     
         69 . The dressing of  claim 66 , wherein:
 the fluid instillation matrix is positioned adjacent a first side of the dressing member; and   the central manifold member is positioned adjacent a second side of the dressing member.   
     
     
         70 . (canceled) 
     
     
         71 . A dressing for treating a tissue site, comprising:
 a protective layer;   a fluid distribution hub configured to exchange fluid with the tissue site; and   a plurality of treatment tubes, wherein each of the plurality of treatment tubes comprises:
 a central conduit adapted to deliver fluid from the fluid distribution hub to the tissue site, and 
 a peripheral channel adapted to transport fluid to the fluid distribution hub. 
   
     
     
         72 . The dressing of  claim 71 , wherein the peripheral channel comprises a polyurethane film surrounding an outer diameter of the central conduit. 
     
     
         73 . The dressing of  claim 71 , wherein the central conduit comprises a polyurethane film within an inner diameter. 
     
     
         74 . A system for treating a tissue site, comprising:
 an occlusive layer;   a fluid removal manifold positioned adjacent a first surface of the occlusive layer; and   a fluid distribution vessel positioned adjacent a second surface of the occlusive layer.   
     
     
         75 . The system of  claim 74 , further comprising:
 a negative-pressure source configured to be fluidly connected to the fluid removal manifold; and   a fluid source configured to be fluidly connected to the fluid distribution vessel.   
     
     
         76 . The system of  claim 74 , further comprising a conduit, wherein the conduit has a first fluid channel in fluid communication with the fluid removal manifold and a second fluid channel in fluid communication with the fluid distribution vessel. 
     
     
         77 . The system of  claim 74 , further comprising:
 a first conduit extending through the fluid distribution vessel and the occlusive layer and in fluid communication with the removal manifold; and   a second conduit in fluid communication with the fluid distribution vessel.   
     
     
         78 . The system of  claim 74 , wherein the occlusive layer comprises a plurality of fluid removal passageways that are formed on the first surface of the occlusive layer. 
     
     
         79 . The system of  claim 74 , wherein the occlusive layer comprises a plurality of fluid delivery passageways that are formed on the second surface of the occlusive layer. 
     
     
         80 . The system of  claim 79 , wherein the plurality of fluid delivery passages extend radially across the second surface of the occlusive layer. 
     
     
         81 . The system of  claim 78 , wherein the plurality of fluid removal passageways extend radially across the first surface of the occlusive layer. 
     
     
         82 . The system of  claim 74 , wherein the fluid distribution vessel comprises a polyurethane film that is welded around a perimeter to provide an interior volume. 
     
     
         83 . The system of  claim 74 , wherein the fluid distribution vessel comprises a plurality of outlets. 
     
     
         84 . The system of  claim 83 , wherein the outlets are positioned on a first surface of the fluid distribution vessel that is adapted to be positioned adjacent the second surface of the occlusive layer. 
     
     
         85 . The system of  claim 83 , wherein the outlets are sized to develop an increased fluid pressure in an interior volume of the fluid distribution vessel. 
     
     
         86 . The system of  claim 74 , wherein the fluid distribution vessel comprises a plurality of compartments formed by welds within an interior volume of the fluid distribution vessel. 
     
     
         87 . (canceled) 
     
     
         88 . The system of  claim 85 , wherein the plurality of outlets are configured to withstand a predetermined outward fluid pressure prior to opening. 
     
     
         89 . The system of  claim 74 , wherein the occlusive layer comprises a polyurethane film. 
     
     
         90 . The system of  claim 74 , wherein the occlusive layer comprises a plurality of pleats forming a plurality of fluid removal passageways on the first surface of the occlusive layer and a plurality of fluid delivery passageways on the second surface of the occlusive layer. 
     
     
         91 . The system of  claim 74 , wherein the fluid removal manifold comprises a plurality of welded polyurethane films. 
     
     
         92 . (canceled) 
     
     
         93 . The system of  claim 74 , wherein the fluid removal manifold comprises a first surface having a plurality of fenestrations. 
     
     
         94 .- 96 . (canceled) 
     
     
         97 . A system for treating a tissue site in an abdomen, comprising:
 a dressing member comprising a plurality of fluid pathways configured to communicate negative pressure to the tissue site;   a fluid delivery vessel adapted to be positioned adjacent a first surface of the dressing member and having a first side comprising a plurality of openings for delivering fluid to the tissue site; and   a drape adapted to be placed over a second surface of the plurality of fluid pathways.   
     
     
         98 . The system of  claim 97 , further comprising a negative-pressure source configured to be in fluid communication with the plurality of fluid pathways, and further comprising a fluid source configured to provide a treatment fluid to the fluid delivery vessel. 
     
     
         99 .- 100 . (canceled) 
     
     
         101 . The system of  claim 97 , wherein the fluid delivery vessel comprises a body formed from a polyurethane film having a thickness of between 25 micrometers and 200 micrometers. 
     
     
         102 . The system of  claim 97 , wherein the fluid delivery vessel comprises:
 a first film layer comprising the plurality of openings; and   a second film layer positioned adjacent the first film layer;   wherein a perimeter of the first film layer is welded to a perimeter of the second film layer to form an internal volume.   
     
     
         103 . The system of  claim 102 , wherein portions of the first film layer are welded to portions of the second film layer to form a network of fluid passageways inside the internal volume. 
     
     
         104 . The system of  claim 97 , wherein the fluid delivery vessel is formed from a first film layer, and a perimeter of the first film layer is fixed to the first side of the dressing member. 
     
     
         105 . The system of  claim 97 , further comprising a fluid channel extending through the dressing member and adapted to fluidly connect the fluid delivery vessel with a fluid source. 
     
     
         106 . The system of  claim 105 , wherein the fluid channel comprises an opening in the dressing member, wherein a perimeter around the opening is formed by a sealed edge of the dressing member. 
     
     
         107 . The system of  claim 97 , wherein the plurality of fluid pathways comprise fenestrations. 
     
     
         108 . The system of  claim 97 , wherein each of the plurality of fluid pathways comprises a manifold member comprising at least one of an open-cell foam or a non-woven fabric. 
     
     
         109 . (canceled) 
     
     
         110 . The system of  claim 97 , wherein the fluid delivery vessel comprises:
 a central chamber; and   a plurality of radial channels comprising a first end fluidly connected to the central chamber and a second end having an open portion.   
     
     
         111 . The system of  claim 110 , further comprising an internal manifold adapted to maintain a structure of the central chamber under negative-pressure conditions. 
     
     
         112 . The system of  claim 111 , wherein the internal manifold comprises a polyurethane foam. 
     
     
         113 . The system of  claim 111 , wherein the internal manifold comprises a film. 
     
     
         114 . The system of  claim 111 , wherein the internal manifold is collapsible. 
     
     
         115 . The system of  claim 97 , wherein the fluid delivery vessel is formed from a first film layer and a second film layer, and a perimeter of the first film layer is sealed to the perimeter of the second film layer. 
     
     
         116 . The system of  claim 102 , wherein:
 the first film layer comprises an occlusive film; and   the second film layer comprises perforations.   
     
     
         117 . (canceled)