Polyurethane foam dressings

Polyurethane foam dressings of this type are recommended for the management of dry sutured wounds, minor lacerations, early pressure ulcers, and venous ulcers. ... 

Paraffin gauze dressing Perforated film absorbent dressing Polyurethane foam Burns, scaids, grafts Postoperative wounds Burns, ulcers, grafts. Any combination of dry heat, gamma-radiation and ethylene oxide... 

In general, they consist of a pressure sensitive adhesive layer which is composed of a so-called hydrocolloid dispersed with the aid of a tackifier in an elastomer and secondly a film coating composed of a gas permeable but water impermeable, flexible, elastomeric material. A currently available hydrocolloid dressing is a flexible mass with an adherent inner face and an outer semipermeable polyurethane foam. 

Substances that are used in wound dressings include hydrogels, hydrocolloids, alginates, and polyurethane foams. Medicaments that they contain include wool wax alcohols (amerchol, cetearyl alcohol, propylene glycol), plant resins/ethereal oils (balsam of Peru, colophony, fragrance mix, propolis), and topical antibiotics. 

J. A. Myers. Lyofoam - a versatile polyurethane foam surgical dressing. Pharm. /., 235, 270 (1985)... 

Starch polyurethane foams could be converted into sorbents for water when starch-acrylonitrile or starch-methacrylonitrile graft copolymers were crosslinked with diisocyanates.2655 2656 Such polyurethanes have been proposed as occlusive wound dressings,2657 as well as sizes for cotton yams.2658 Starch polyurethanes for reinforced paper were produced in reaction of iV-chlorocarbamoylethyl starch with cresol or thiolignin.2659 The addition of mineral salts to polyurethanes prepared from starch and urea improved their performance as adhesives.570... 

Bhende S, Spangler D. In vitro assessment of chlorhexidine gluconate-impregnated polyurethane foam antimicrobial dressing using zone of inhibition assays. Infect Control Hosp Epidemiol 2004 25 664-7. 

Salisbury, R.E., Bevin, A.G., Dingeldein, G.P., Grisham, J., 1979. A clinical and laboratory evaluation of a polyurethane foam a new donor site dressing. Archives of Surgery 114, 1188-1192. 

Foams Foam dressings are sheets and other shapes of foamed polymer solutions (most commonly polyurethane) with small, open cells capable of holding fluids. They may be impregnated or layered in combination with other materials Avance Foam Dressing Kits Medela Polyurethane... 

Foam dressings are typically composed of polyurethane, but can also be constructed from rubber, acrylic, polyethylene, neoprene, etc. The value of urethane foams is derived from their well-established biocompatibility. Further to this, by suitable choice of diisocyanate and polyol combination, they can be tailored to be hydrophilic or hydrophobic. The former is useful in exudate reduction, while the latter may have lower adherence to the wound surface. These foams can be impregnated with pharmaceuticals, such as antibiotics, or activated carbon to reduce odor. 

This study was reported with another set of experiments that confirmed the growth of fibroblasts in connection with an experimental bum dressing. " While our work was positive enough to warrant further research, a technical problem prevented continued work. While we felt the surface chemistry was a necessary component of a successful artificial liver, it was not sufficient. In order to build a successful device, fluids must be able to enter and exit the environment freely. We discussed the differences in structure between open-celled polyurethanes and reticulated foam earlier. 

Foaming the polymer creates small, open cells that are able to hold fluids and the cell size may be controlled during the foaming process. The most common polymer used is polyurethane. Their structure and softness also provide a cushion that protects and contributes to thermal insulation of the wound. They also may be tailored for particular applications such as tracheostomy dressing without particle loss to the wound and with the retention of their conformable characteristics. The non-adhesive foams will require a secondary dressing. 

Lovett, D. and Eastop, D. (2004). The degradation of polyester polyurethane prehminary study of 1960s foam-laminated dresses. In Preprints of IIC Congress Modem Art, New Museums Bilbao, 13-17 September 2004 (A. Roy and P. Smith, eds) pp. 100-104, IIC. 

Uses Dispersant, emulsifier for latex polymerization, wastewater treatment foamable hydrophilic prepolymer for wound dressings, biocompatible coatings, drug delivery vehicles absorbent foam, carrier food-contact PU, rubber articles ManufJDistrib. Air Prods. Bayer CasChem Conap Hampshire Huntsman Polyurethanes Monomer-Polymer Dajac Labs NeoResins Noveon Polyurethane Corp. of Am. Polyurethane Spec. Soluol Uniroyal... 

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