XStat works by injecting a group of small, rapidly-expanding sponges into a wound cavity using a syringe-like applicator. Each sponge contains an x-ray detectable marker. In the wound, the XSTAT sponges expand and swell to fill the wound cavity within 20 seconds of contact with blood. This creates a temporary barrier to blood flow and provides hemostatic pressure. XStat is a novel device that can be rapidly deployed, providing fast-acting hemorrhage control to stabilize a wounded patient for transport