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Injectable Foam Device Could Prevent Fatal Blood Loss in Wounded Soldiers
Without prompt care, a badly wounded soldier can easily bleed to death while being transported to a distant medical station. Two traditional treatments, tourniquets and medicated gauze pads, often cannot stop the blood loss from a deep wound at the neck, shoulder, or groin. Johns Hopkins University biomedical engineering students have invented an injectable foam device to stop profuse bleeding from a wound where a limb or the head is connected to the torso. It is designed to apply pressure and curb blood loss during the critical first hour during which a wounded soldier is moved to a site that provides more advanced medical help. The prototype device contains two chemicals "?? a polyol and a diisocyanate "?? that produce the foam, and remain in separate canisters within the injector device before they are needed. The chemicals are stable in military conditions at temperatures up to 100 degrees F for at least one year.
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