this invention is directed to advanced hemorrhage control wound dressings , and methods of using a producing same . the subject wound dressing is constructed from a non - mammalian material for control of severe bleeding . the wound dressing is formed of a biomaterial comprising chitosan for controlling severe bleeding . the kind of severe , life - threatening bleeding contemplated by this invention is typically of the type not capable of being stanched when a conventional gauze wound dressing is applied with conventional pressure to the subject wound . the wound dressing being capable of substantially stanching the flow of the severe life - threatening bleeding from the wound by adhering to the wound site , to seal the wound , to accelerate blood clot formation at the wound site , to reinforce clot information at the wound site and prevent bleed out from the wound site , and to substantially prohibit the flow of blood out of the wound site .