Saul,
I would be very careful with this one. Look at the data presented in a paper on the company website:
http://www.cytosorbents.com/pdf/Schaedler_poster_ISICEM_2013…
It essentially says that although its safe the mortality rate did not differ significantly. One reason could be that filtering cytokines through such a low tech device is filtering both good and bad kinds. The polymer beads they are talking about is something someone would have thought about before as well. Its simply to trivial a technique to really work well in the long run. Just my thoughts.