1) Transfusion medicine 
Hemoperfusion (British English: haemoperfusion) First introduced in the 1940s, the technique was refined during 1950 to 1970, and then introduced clinically for the treatment of poisoning in the 1970s and 1980s. Despite its availability, this technique is only infrequently utilized as a medical process used to remove toxic substances from a patien...
Passing blood through a column of charcoal or adsorbent resin for the removal of drugs or toxins.
Synonym for haemoperfusion ... <physiology> The act of pouring over or through, especially the passage of blood through the vessels of a specific organ. ... (18 Nov 1997) ... 
(he″mo-pәr-fu´zhәn) the passing of large volumes of blood over an adsorbent substance outside the body in order to remove toxic substances. See also hemofiltration.
Type: Term Pronunciation: hē′mō-pĕr-fyū′zhŭn Definitions: 1. Passage of blood through columns of adsorptive material (such as activated charcoal) to remove toxic substances from the blood.
dialysis of the blood to remove foreign substances such as poisons or drugs