Patent ID: 8668924

Claim:
A method comprising compressing a structure comprising a freeze-dried chitosan biomaterial at a rate of less than 20 mm/min by application of mechanical pressure and heat, providing a wound dressing comprising the freeze-dried and heat-compressed structure having a density, after being heat-compressed, of between about 0.14 g/cm 3 to about 0.6 g/cm 3 , and a moisture content between about 2% and 5% w/w, inserting the freeze-dried and heat-compressed structure into a wound site into contact with tissue for hemorrhage control to form a chitosan adhesive material in combination with the blood flowing, and adhering the freeze-dried and heat-compressed structure to tissue in the presence of blood flow, wherein the structure has a degree of adhesion to the wound site of about 40 kPa to about 500 kPa, and staunching bleeding within the wound site.