Medical polymeric microsphere adsorbent for hemoperfusion apparatus and preparation method of medical polymeric microsphere adsorbent

The invention discloses a medical polymeric microsphere adsorbent for a hemoperfusion apparatus and a preparation method of the medical polymeric microsphere adsorbent. The microsphere adsorbent is prepared by grading styrene-divinylbenzene microspheres with different pore diameters and specific surface areas, and carrying out medical purification treatment and bioactivity controllable stem grafting technology treatment. In the microsphere adsorbent, the volume ratio of microspheres with the size ranges of 1-10 microns, 10-100 microns and 100-500 microns in the microsphere adsorbent is 1 to (1-10) to (1-20); and the content O.D190-400nm of residual monomers in the microspheres is less than or equal to 0.03. The medical polymeric microsphere adsorbent for the hemoperfusion apparatus, which is prepared by the invention, not only can be used for adsorbing harmful micro-molecules in blood, but also can be used for effectively adsorbing medium molecule and macromolecules in the blood, so that clinical application requirements are met.