Abstract: The present invention provides a novel and simple method for fabricating a layer (membrane) containing arrays of microscopic needles obtained from crab shells capable of effectively treating wounds and having other medical applications; the method comprises crustacean exoskeletons treated with a base solution, an acid solution, and then medicinally active ingredients such as polysaccharide, proterin, artificial polymer, and inorganic solution.

Abstract: The present invention provides a medical dressing article and a method of manufacturing the same, which comprises: (a) a first layer comprised of polycaprocaptone fibers having a PCL fiber diameter of 0.5 ?m and 2.9 ?m; (b) a second layer, deposited directly on the first layer, including a mixture of polycaprolactone and poloxamer fibers (PCL and POX fibers) wherein a PCL and POX fiber diameter is between 0.1 ?m and 4 ?m; and (c) a third layer, deposited directly on the second layer, further comprising a mixture of gelatin and silver nitrate (AgNO3).