FDA approved XSTAT 30 which can seal a gunshot wound within 20 seconds

The U.S. Food and Drug Administration (FDA) has approved the use of XSTAT 30 wound dressing, an expandable, multi-sponge dressing used to control severe, life-threatening bleeding from wounds in areas that a bandage cannot be placed in battlefield and civilian trauma settings.

XStat is a first-in-kind hemostatic device for the treatment of gunshot and shrapnel wounds. 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 so that it can be easily removed if it gets stuck in the body.
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