A device called XSTAT 30 squirts out 92 tiny compressed cellulose sponges coated with a blood absorbing substance.
The sponges can soak up around a pint of blood, swelling in the process to fill-in a wound and stopping more blood from flowing out.
That could prevent life-threatening blood loss from a gunshot wound victim as they are transported to hospital.
The device has just been approved in the US by the Food and Drug Administration (FDA) for use by emergency services.
Each sponge has an X-ray detectable marker so that no sponges are accidentally left behind when a patient is stitched up.
The device only has partial clearance, and cannot currently be used in certain parts of the chest, abdomen and pelvis.

http://news.sky.com/story/1603317/sponge-injection-could-save-gunshot-victims