a surgically implantable mesh for covering a tear or rupture in a lining associated with an interior body cavity . a mat shaped polymer body has top and bottom spaced apart surfaces which are communicable at intervals by an interior configuration defined in the body and which promotes tissue in - growth following implantation . an antibacterial additive is intermixed with the polymer in a viscous state prior to formation and can included at least one of silver , gold , copper , bronze , or ground bamboo fibers .