Medical fibrous structure comprising calcium carboxymethyl cellulose and chitosan compound and process for preparing the same

A medical fibrous structure comprising:

• calcium carboxymethyl cellulose fiber;
• and
• a chitosan compound fiber,
• wherein a weight ratio of the calcium carboxymethyl cellulose fiber and the chitosan compound fiber is from 70:30 to 30:70,
• wherein a calcium content in the calcium carboxymethyl cellulose fiber is 2 to 12 wt % per a total weight of the calcium carboxymethyl cellulose fiber,
• wherein the medical fibrous structure has absorbance of 0.30 or less as a blood coagulation property when measured at following conditions:
• dripping 100 μl of a mixed solution of blood and an anticoagulant that is sodium citrate of 3.8 w/v % at a volume ratio of 9:1 into the medical fibrous structure of dimensions 1 cm×1 cm,
• inducing coagulation in a 37° C. incubator for 10 minutes with an addition of 10 μl of 0.2M CaCl2 aqueous solution,
• eluting blood that does not participate in the coagulation of the blood in the mixed solution in 12.5 mL of distilled water,
• determining absorbance [AB] of 200 μl of the eluate at 540 nm wavelength, and absorbance [AW] of 200 μl of distilled water at 540 nm wavelength, and
• calculating the absorbance as the blood coagulation property by a following equation:
• the absorbance as the blood coagulation property=the absorbance of blood eluate [AB]−the absorbance of distilled water [AW].