Hybrid drape having a gel-coated perforated mesh

Abstract

A system for treating a tissue site with negative-pressure is described. The system includes a manifold configured to be positioned adjacent to the tissue site and a drape configured to be positioned over the tissue site and the manifold to form a sealed space. The system also includes a negative-pressure source configured to provide negative-pressure to the sealed space. The drape includes a film layer, a layer of a bonding adhesive coupled to the film layer, and a mesh coupled to the layer of the bonding adhesive. The mesh includes a coating of a sealing adhesive and one or more bonding apertures. Methods of manufacturing the drape are also described.

1 .- 50 . (canceled) 
     
     
         51 . A drape configured to be positioned over a tissue site to form a sealed environment, the drape comprising:
 a film layer;   a layer of a bonding adhesive coupled to the film layer; and   a mesh coupled to the layer of the bonding adhesive opposite the film layer, the mesh having a coating of a sealing adhesive, a plurality of mesh apertures, and one or more bonding apertures.   
     
     
         52 . The drape of  claim 51 , wherein the mesh comprises a plurality of fibers connected to form intersections. 
     
     
         53 . The drape of  claim 52 , wherein each intersection of the fibers is substantially flat. 
     
     
         54 . The drape of  claim 52 , wherein a prominence of the fibers at each intersection is less than about 1 millimeter. 
     
     
         55 . The drape of  claim 52 , wherein the fibers are woven. 
     
     
         56 . The drape of  claim 52 , wherein the fibers are knitted. 
     
     
         57 . The drape of  claim 52 , wherein the fibers are extruded and are substantially planar at each intersection. 
     
     
         58 . The drape of  claim 52 , wherein a diameter of each fiber of the plurality of fibers is less than about 1 millimeter. 
     
     
         59 . The drape of  claim 52 , wherein each fiber of the plurality of fibers is a monofilament. 
     
     
         60 . The drape of  claim 52 , wherein each fiber of the plurality of fibers is a plurality of twisted monofilaments. 
     
     
         61 . The drape of  claim 52 , wherein each fiber of the plurality of fibers is a plurality of staple fibers. 
     
     
         62 . The drape of  claim 52 , wherein the one or more bonding apertures are formed through the plurality of fibers of the mesh. 
     
     
         63 . The drape of  claim 51 , wherein an effective diameter of each mesh aperture is between about 0.5 millimeters and about 4 millimeter. 
     
     
         64 . The drape of  claim 51 , wherein an effective diameter of each mesh aperture is smaller than an effective diameter of each bonding aperture. 
     
     
         65 . The drape of  claim 51 , wherein a coating weight of the coating of the sealing adhesive is between about 100 grams per square meter and about 500 grams per square meter. 
     
     
         66 . The drape of  claim 51 , wherein an effective diameter of each bonding aperture is between about 5 millimeter and about 15 millimeter. 
     
     
         67 . The drape of  claim 51 , wherein the mesh comprises a polymeric mesh. 
     
     
         68 . The drape of  claim 51 , wherein:
 the film layer comprises a polyurethane film having a thickness between about 15 microns and about 50 microns;   the bonding adhesive comprises an acrylic adhesive having a coating weight between about 15 grams per square meter and about 70 grams per square meter;   the mesh comprises a silicone mesh having mesh apertures with an effective diameter between about 0.5 millimeters and about 4.5 millimeters; and   the sealing adhesive comprises a silicone gel adhesive having a coating weight between about 100 grams per square meter and about 500 grams per square meter.   
     
     
         69 . The drape of  claim 51 , wherein the film layer, the layer of the bonding adhesive, and the mesh are congruent layers, and the layer of the bonding adhesive separates the film layer from the mesh. 
     
     
         70 . The drape of  claim 51 , wherein the one or more bonding apertures are sized to allow the bonding adhesive to extend through the one or more bonding apertures.