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Spotlight on Wound-Care Technologies

  • Spotlight on Wound-Care Technologies

    This Spotlight on Wound-Care Technologies feature includes product information on silicone gels, custom adhesives, a breathable polyurethane film, and other wound-care–related technologies. Shown in the background here is the Silbione HC2 adhesive silicone gel designed by Bluestar Silicones.

  • Paper-mounted TPU film

    ArgoMedPlus18411 is a 1.0-mil × 60-in. aromatic-polyether polyurethane film–on-paper device with controlled release that gives medical adhesive coaters and converters an alternative film source for the production of comfortable, conformable frame-type wound dressings and surgical drapes. Supplied by Argotec, this film-on-paper construction allows the paper carrier to serve as the frame for the dressing. Adjustment of the adhesive-coating process for the thermoplastic polyurethane (TPU) extrusion results in the optimal peel-release values between film and paper. The union of layers is tight enough to ensure that the waterproof, breathable TPU film and paper remain intact during coating and slitting but loose enough to allow the kiss-cut window to be detached from the film while the frame remains affixed to the film. And when the practitioner applies the dressing, the film and paper also remain loose enough so that the frame separates from the TPU without forcing the adhesive away from the patient. The composite device meets biocompatibility standards, provides a barrier to viral and bloodborne pathogens, and can withstand EtO and gamma sterilization.

  • Custom adhesives

    A manufacturer of pressure-sensitiveadhesive (PSA) tapes provides custom adhesive technologies for wound-care products and other skin-contacting medical devices. For long-term-wear applications requiring an aggressive adhesive, Adhesives Research Inc. supplies a medical-grade acrylic adhesive technology that offers high moisture-vapor transmission rates (MVTR) for breathability, good wear properties, minimal edge lift, and tolerable removal with no adhesive residue left on the skin. This adhesive supports dressings intended for wound sites posing potential adhesion difficulties and can be tailored to bear the weight of skin-attached medical devices and pump patches. Also available is a low-trauma-adhesive (LTA) platform for gentle skin removal. This customizable, high-MVTR PSA technology maintains reliable skin contact for up to three days and allows removal and reapplication without the adhesive bonding to itself. The gamma-sterilization-compatible LTA formulation leaves no residue and is biocompatible, noncytotoxic, and nonirritating or sensitizing to the skin.
    Adhesives Research Inc.

  • Liquid silicone rubber

    The QP1 grades of liquid silicone rubber (LSR) from Dow Corning are designed to give medical device manufacturers and fabricators a range of material choices for intricate devices and components, including wound-care membranes and implanted wound drains. The family of eight USP Class VI–tested translucent silicone elastomers is suited for both short-term implantable devices and products not intended for implantation or insertion. Available in hardnesses of 20 to 75 Shore A, they offer high tear strength and low compression set in combination with such processing advantages as batch-to-batch consistency and fast curing. Postcuring steps may be unnecessary in certain applications. The LSR materials are two-part platinum-catalyzed silicone elastomers supplied in a kit and suitable for liquid-injection molding. They are formulated without the use of peroxides, peroxide by-products, chlorophenyls, polychlorinated biphenyls, organic plasticizers, phthalates, or latex additives.
    Dow Corning

  • Silicone gels

    Silbione HC2 adhesive silicone gels have been designed by Bluestar Silicones to serve in a variety of wound- and skin-care applications, including wound dressings and bandages, transdermal patches, medical tapes, and scar management applications. Manufactured in an ISO Class 8 cleanroom, the hydrophobic gels allow gentle adhesion to dry skin around the wound periphery without adhesion to the wound itself. These skin adhesives also maintain low peel force, making removal easy without skin stripping. The gels are supplied as two-part, platinum-catalyzed silicone elastomers in a range of viscosities and tack levels. In addition, the manufacturer offers a primer technology that enables the silicone gels to adhere to polyurethane film substrates and enhances flexibility in substrate selection.
    Bluestar Silicones

  • Breathable polyurethane film

    Medifilm 426, a breathable polyurethane film on a removable carrier, is available for use in skin-contacting applications such as IV-site dressings, wound-care dressings, and incise drapes. Manufactured by Mylan Technologies, the product can be supplied with hypoallergenic pressuresensitive adhesives. It consists of the extruded polyurethane film on a paper/polypropylene liner and has a thickness between 0.5 and 10 mil, a thickness range that is standard with all the films in this line of wound-care and ostomy devices. The film has a medium-level coefficient of friction and moisture vapor transmission rate. It can also be customized by the inclusion of pigments such as flesh tones, embossed matte or gloss finishes, antistatic agents, and other options.
    Mylan Technologies

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