Patent ID: 7462753

Claim:
A nano-silver wound dressing comprising: a first skin contact layer wherein said skin contact layer is formed of hydrophilic cloth, contacting a wound site on the skin directly; a second disinfecting (or bactericidal) antitoxic layer mounted contiguously on top of said first skin contact layer wherein said disinfecting antitoxic layer is formed of activated charcoal cloth impregnated with nanocrystalline silver; a third blood absorbing and styptic layer mounted contiguously on top of said second disinfecting antitoxic layer wherein said blood absorbing and styptic layer is formed of a superabsorbent polymer (SAP) non-woven cloth, said SAP for expanding with blood absorption and simultaneously increasing a contact pressure on said wound by said nano-silver wound dressing wherein said SAP increases in weight with said blood absorption; a fourth isolation layer mounted contiguously on top of said third blood absorbing and styptic layer wherein said isolation layer is formed of a composite fabric with a pore size less than 5 μm, and is connected to the edges of the skin contact layer to form a main body for enclosing the disinfected antitoxic layer and the blood absorbing and styptic layer; and an elastic bandage connecting with the main body for fixing the main body on wound site.