Patent ID: 8136676

Claim:
A separation system configured to remove a leukocyte from a liquid medium; the system comprising: a container defining an inlet, an outlet, and a volume of space; a separation medium occupying at least a portion of the volume of space; the container being configured for contacting the separation medium with the liquid medium; the separation medium comprising a surface portion; the surface portion comprising a ternary polymer of the general formula: -(D) o -(E) p -(F) q — (II) in which in which R 1 is H or a lower alkyl group; R 3 , R 10 are independently lower alkyl, phenyl or substituted phenyl groups; R 4 , R 6 , R 7 , R 8 , R 11 , R 13 , R 15 , R 16 are independently H, lower alkyl, phenyl or substituted phenyl groups; R 2 , R 5 , R 9 , R 14 are independently selected from CH 2 —CH 2 , CH 2 —CHR a , CHR a —CH 2 , CHR a —CHR b , CHR a —CR b R c , CR a R b —CHR c , CR a R b —CR c R d or (CH 2 ) e , where e=2-6, and R a , R b , R c , R d are lower alkyl groups and R a , R b , R c and R d may be the same or different; R 12 is H, a lower alkyl, phenyl, substituted phenyl or 1,1-dimethyl-3-oxobutyl group; X is O or NR f , where R f is H or a lower alkyl group; s is 0 or s≧2; and o+p+q=100, 0<o, p, q<100.