Patch Gun

Background
The Patch Gun simplifies treatment of open wounds in the field. A trigger-pull of the gun produces medicated foam that is easily applied to a wound. Once hardened, the foam serves as a resilient air-sealed bandage without the use of bandages or ointments.

When Ezra lost his right arm due to a toxic infection from Green Moon spores, Cee amputated his arm and used a patch gun to seal the wound.