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US 4,390,519 AGranted
Bandage with hemostatic agent and methods for preparing and employing the same
OwnerPhilip N. Sawyerinventor
Life of this patent
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Abstract
An improved hemostatic article is made by combining collagen or a collagen-like substance with a pad or sponge. The thusly modified pad or sponge is employed to control or terminate bleeding.
Claims6
A method comprising modifying one of the group consisting of a water soluble collagen substance or a water soluble collagen-like substance by dissolving the substance in water and modifying the thusly dissolved substance to render the surface charge thereof effectively more positive than prior to modification while retaining the water solubility of the substance, and freezing and drying the thusly modified substance in a bandage.
Dependencies are inferred from the claim text.