Biological-degradable chitosan porous hemostasis material and its preparing method

Abstract

The invention supplies a biodegradable nanometer channel multi orifice stanching material and manufacturing method which uses chitosan as raw material. It includes orifice making, forming, orifice making agent removing. The multi orifice structure can be gained by adding orifice making agent in preparation, removing it in forming, which emulsifies to form latex, solidifies to form hydrogel, removes the agent by alcohol or ketone solvent, dries the hydrogel, or processes cross linking for the formaldehyde, glutaraldehyde, solidifies chitosan aqueous solution to form hydrogel, removes the agent by water, dries the hydrogel. This material can fast adsorb the moisture in the blood to stanch.

Description

technical field

[0001] The invention relates to a porous hemostatic material and a preparation method thereof, in particular to a biodegradable chitosan porous hemostatic material and a preparation method thereof. Background technique

[0002] Hemostasis is an important part of first aid for various operations, war injuries, and trauma. The current hemostatic materials and hemostatic drugs are through embolization, contraction of small arteries and capillaries; enhancement of platelet function, acceleration and strengthening of blood coagulation process; inhibition of blood clot dissolution process; or Hemostasis is produced by burning, compressing, and suturing blood vessels. In the long-term production and living practice, people have found that materials with porous structure are often accompanied by good hemostatic function. For example, our ancestors used incense ash to stop bleeding very early, and residents in coastal areas often used cuttlefish bone powder to stop bl...

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