Surgery: splint – brace – or bandage – Bandage structure – Skin laceration or wound cover
Reexamination Certificate
2007-10-31
2010-10-26
Lewis, Kim M (Department: 3772)
Surgery: splint, brace, or bandage
Bandage structure
Skin laceration or wound cover
C602S041000, C602S042000, C602S043000, C424S445000, C514S055000, C536S020000
Reexamination Certificate
active
07820872
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.
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Gregory Kenton W
McCarthy Simon
Lewis Kim M
Providence Health System-Oregon
Ryan Krombolz & Manion, SC
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