Clay-based hemostatic agents and devices for the delivery...

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Web – sheet or filament bases; compositions of bandages; or...

Reexamination Certificate

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C424S443000, C424S444000, C424S489000, C424S446000, C424S447000, C602S041000, C602S042000, C602S043000, C602S045000, C602S046000, C602S047000, C602S048000, C602S052000, C602S053000, C602S054000, C602S056000, C602S057000, C602S058000, C502S080000

Reexamination Certificate

active

07604819

ABSTRACT:
A hemostatic device for promoting the clotting of blood includes a gauze substrate, a clay material disposed on the gauze substrate, and also a polyol such as glycerol or the like disposed on the gauze substrate to bind the clay material. When the device is used to treat a bleeding wound, at least a portion of the clay material comes into contact with blood emanating from the wound to cause the clotting. A bandage that can be applied to a bleeding wound to promote the clotting of blood includes a flexible substrate and a gauze substrate mounted thereon. The gauze substrate includes a clay material and a polyol. A hemostatic sponge also includes a gauze substrate and a dispersion of hemostatic material and a polyol on a first surface of the substrate.

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