The energy device includes: a treatment section that seals a blood vessel by applying energy a first grip section that constitutes the treatment section and grips a treatment target and a first grip section that constitutes the treatment section, A second gripping portion for gripping the treatment target between the gripping portion of the first gripping portion and the gripping portion of the second gripping portion, and a second gripping portion for gripping the treatment target between the first gripping portion and the second gripping portion of the blood vessel, And a damming portion for stopping the blood flow of the blood vessel in the vicinity of the first holding portion and the second holding portion so as not to flow.エネルギーデバイスは、エネルギーを付与することで血管を封止する処置部と、前記処置部を構成し、処置対象を把持するための第1の把持部と、前記処置部を構成し、前記第1の把持部との間で前記処置対象を把持する第2の把持部と、前記血管の前記第1の把持部と前記第2の把持部との間で把持された部分に対して血流が流れないように、前記第1の把持部と前記第2の把持部との近傍で前記血管の血流を止めるせき止め部と、を有する。
