TEGADERM Description Sterile, waterproof barrier: protects the insertion site and the wound from external contaminants, such as viruses and bacteria, and from blood and body fluids: laboratory tests show its effectiveness as a barrier, starting from viruses with a diameter of 27 nm, provided that the dressing remains intact. The breathable film allows the exchange between oxygen and water vapor. Easy and safe positioning, thanks to the frame application system, reduces