Structural Conformability and Fluid Uptake Properties of Smart Wound Dressings

In this study ten commercial smart wound dressings - CombiDerm®, Versiva® XC®, Sorbsan Plus SA, Opsite* Post-Op, Aquacel™ Surgical, DuoDerm®, Granuflex®, Mepilex® Border, Allevyn Gentle Border and Biatain® - were tested and evaluated. The following experimental tests were performed on the dressing specimens; area density, thickness, fluid uptake and handling, conformability, absorption rate, waterproofness, stainless steel (SS) peel test and vertical wicking. It was found that Biatain® had the highest absorbency and fluid handling capacity and also had lower moisture vapour permeability value compared to the other dressings. Versiva® XC® and DuoDerm® had higher extensibility values than other dressings, which are 3.56 machine direction (MD) and 3.99 (CD) cross direction Ncm-1 for Versiva® XC® and 3.67 (MD) - 3.12 (CD) Ncm-1 for DuoDerm®. The pattern of results for permanent set was found to be similar to the extensibility results. All tested dressings passed the waterproofness threshold. DuoDerm® and Granuflex® showed more than 20 minutes rate of absorption and also their SS Peel values were found to be considerably higher than the other dressings investigated.