<;P>;PROBLEM TO BE SOLVED: To suppress occurrence of an ischemic injury by facilitating fixing work when a cannula for hemophoresis is fixed to an organism tissue to end the work in a short period of time, and rapidly starting the hemophoresis. <;P>;SOLUTION: The fixing tool 1 to be used in fixing the cannula A for hemophoresis to the organism tissue such as the intima tissue of a main artery includes: a holding part 10 for holding the cannula A; and insertion parts 13, 14 to pierce the organism tissue. The organism tissue is pierced by the insertion parts 13, 14 and then, the holding part 10 holds the cannula A. <;P>;COPYRIGHT: (C)2010,JPO&INPIT