Wound dressings, apparatus, and methods for controlling severe, life-threatening bleeding

Authors

Kenton W. Gregory, Providence Health & Services
Simon McCarthy

Document Type

Patent

Publication Date

10-31-2007

Abstract

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.

Specialty/Research Institute

Surgery

Location

United States

Comments

Patent Number: 7,820,872

Assignee

Providence Health System-Oregon (Portland, OR)

Family ID

23151953

Serial Number

11/981,111

Tech ID

01-01-INV-F