Blood filter

Abstract

Provided is a blood filter that resists deterioration in properties as a result of electron beam sterilization treatment performed before or during use as a blood filter, has durability, dimensional stability, and chemical resistance at excellent levels, also has biocompatibility, and resists deterioration in properties even upon the electron beam sterilization treatment. The blood filter according to the present invention includes a nonwoven fabric made of PEEK fibers. Preferably, the blood filter according to the present invention has an average pore size of 3 to 280 μm and has a porosity of 15% to 70%; and the PEEK fibers have an average fiber diameter of 10 μm or less.

1 . A blood filter comprising
 a nonwoven fabric made of PEEK fibers.   
     
     
         2 . The blood filter according to  claim 1 ,
 wherein the blood filter has an average pore size of 3 to 280 μm.   
     
     
         3 . The blood filter according to  claim 1 ,
 wherein the blood filter has a porosity of 15% to 70%.   
     
     
         4 . The blood filter according to  claim 1 ,
 wherein the PEEK fibers have an average fiber diameter of 10 μm or less.   
     
     
         5 . The blood filter according to  claim 1 ,
 wherein the nonwoven fabric has a mass per unit area of 0.02 to 100000 g/m 2 .   
     
     
         6 . The blood filter according to  claim 1 ,
 wherein the nonwoven fabric has a thickness of 0.0001 to 100 mm.   
     
     
         7 . The blood filter according to  claim 1 ,
 wherein the PEEK fibers have a degree of crystallinity of 30% or less.