A treatment system for treating by the action of energy to living tissue, joining the regions sealed the seal when it is reacted with energy in a state in which sealed the desired region of the living tissues between at least two and kept in contact living tissues together in the vicinity of the region where seals the seal when it is reacted with energy in a state in which the sealing member is brought into contact with tissue in the vicinity of the area was sealed by the sealing member I have a control unit that offset the maintenance member, the energy output from the timing of the maintenance member and energy output timing from the sealing member.生体組織にエネルギを作用させて治療するための治療用処置システムは、少なくとも2つの生体組織同士の所望の領域を封止させた状態でエネルギを作用させたときに前記封止した領域を接合する封止部材と、前記封止部材により封止させた領域の近傍の組織を接触させた状態でエネルギを作用させたときに前記封止した領域の近傍の生体組織同士を接触させた状態に維持する維持部材と、前記封止部材からのエネルギ出力タイミングと前記維持部材からのエネルギ出力タイミングとをオフセットする制御部とを備えている。
