Abstract: An embodiment includes a wound dressing comprising: a shape memory polymer (SMP) foam, including open cells, having first and second states; and a hydrogel (HG) included within the cells; wherein (a) in a first position a composite, including the SMP foam and the HG, is configured to be located proximate a hemorrhagic tissue with the SMP foam in the first state; (b) in a second position the composite is configured to be expanded to the second state against the hemorrhagic tissue when the SMP foam is plasticized at 37° C. depressing a glass transition temperature (Tg) of the SMP foam to below 25° C. Other embodiments are described herein.

Abstract: The animal stun gun of the invention is a non-lethal alternative to subduing a dog or other animal in an imminent attack situation where, previously, the use of firearms was the only alternative to stop its advance. The stun gun is an electrical self-defense device that uses high voltage to stop the attacking dog or animal by touching it with the prongs of its staff in turning on an electrical pulse generator to immobilize the dog or animal with a very low amperage, high voltage pulse of high frequency to make its muscles work rapidly, although not efficiently.