Wound dressings, apparatus, and methods for controlling severe, life-threatening bleeding
A chitosan biomaterial is frozen in aqueous solution to form a frozen chitosan structure from which water is removed by a prescribed freeze-drying process to form a sponge-like chitosan structure having a thickness and a density. The sponge-like chitosan structure is compressed by application of heat and pressure to reduce the thickness and increase the density of the sponge-like chitosan structure to form a densified chitosan structure. The densified chitosan structure is further preconditioned by heating the densified chitosan structure according to prescribed conditions to form a wound dressing. The wound dressing possesses an adhesion strength and resistance to dissolution in high blood flow bleeding situations.
Providence Health System-Oregon (Portland, OR)
Gregory, Kenton W. and McCarthy, Simon, "Wound dressings, apparatus, and methods for controlling severe, life-threatening bleeding" (2007). Technology Transfer - Patents. 15.