This will go into my First Aid kits: XStats
XStat plugs gunshot and shrapnel wounds faster and more effectively than the standard battlefield first aid. Currently, medics treat hemorrhage by stuffing gauze as deep as five inches into an injury—a painful process that doesn’t always work. Of soldiers who died between October 2001 and June 2009 of wounds that weren’t immediately fatal, blood loss was the killer in an estimated 80 percent of cases.
The 2.5-ounce syringe slides deep into a injury, such a bullet track, and deposits pill-size sponges that soak up blood and rapidly expand to stem bleeding from an artery. Each sponge is coated with chitosan, a substance that clots blood and fights infection. The FDA says the sponges are safe to leave in the body for up to four hours, allowing enough time for a patient to get to an operating room. To ensure they don’t get left inside a wound, X-shaped markers make each sponge visible on an x-ray image.
Simple Invention For Sealing Gunshot Wounds Gets FDA Approval
Of course, depends on the price but I guess it might be a step up than shoving tampons down a wound.
Hat tip to ITMOTR