Wound dressing sheet

Chitosan has been associated with other biopolymers and with synthetic polymer dispersions to produce wound dressings. Biosynthetic wound dressings composed of a spongy sheet of chitosan and collagen, laminated with a gentamicyn sulphate-impregnated polyurethane membrane, have been produced and clinically tested with good results. 

Membrane (sheet, film) Oral tissue repair wound dressings dura repair patches... 

Chitosan derivatives have also been studied for possible utilization in wound dressings. For example, three kinds of chitosan derivative (oligochitosan, N,0-carboxymethyl-chitosan, and Al-carboxymethyl-chitosan) are used to form sheets and pastes, all of which exhibit appropriate cytocompatibility to the fibroblasts isolated from normal human dermis and hypertrophic scars [179]. 

Keywords Antibacterial breathable hydrogel wound dressings polymer sheet... 

T. Wang, X.-K. Zhu, X.-T. Xuea, and D.-Y. Wu, Hydrogel sheets of chitosan, honey and gelatin as burn wound dressings, Carbohyd. Polym., 88,75-83,2012. 

Collagen Collagen wound dressings are available in the form of gels, pads, particles, pastes, powders, sheets or solutions derived from bovine, porcine or avian sources BIOPAD Angetini Pharma, Inc Type I Collagen... 

Polymeric foam dressings are a diverse group of products with a wide range of properties. At their simplest, they are foamed polymers that have been made into sheets. The wound contact layer is often heat treated and pressure modified to produce a hydrophilic porous membrane about 0.5 mm thick to give a smooth, nonadherent wound contact surface that absorbs fluids by... 

These dressings are sheets of three-dimensional networks of cross-linked hydrophilic polymers (polyethylene oxide, polyacrylamides, polyvinylpyrrolidone, carboxymethylcellulose, modified corn starch). Their formulation may incorporate up to 96% bound water, but they are insoluble in water and they interact by three-dimensional swelling with aqueous solutions. The polymer physically entraps water to form a solid sheet and they have a thermal capacity that provides initial cooling to the wound surface. A secondary dressing is required. 

Sheet formulations may be applied to exuding lesions including leg ulcers, pressure areas, donor sites, and most other granulating wounds, but for deeper cavity wounds and sinuses the ribbon packing is generally preferred. The dressing is easy to remove without causing pain or trauma, and leaves minimal residue on the surface of the wound. " ... 

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