The medical treatment apparatus is provided on a pair of holding members each having a gripping surface for gripping a bonding target site in a living tissue, and at least one holding member of the pair of holding members, and from the gripping surface to the bonding target site Energy applying units 81 and 91 that apply bonding energy and vibration energy, a detection unit 352 that detects whether or not the bonding of the bonding target portion has been completed by applying bonding energy to the bonding target portion, After the joining is completed, an energy control unit 351 is provided that controls the energy applying units 81 and 91 to apply vibration energy from the energy applying units 81 and 91 to the joining target portion.医療用処置装置は、生体組織における接合対象部位を把持する把持面をそれぞれ有する一対の保持部材と、一対の保持部材のうち少なくとも一方の保持部材に設けられ、把持面から接合対象部位に対して接合エネルギ及び振動エネルギを付与するエネルギ付与部８１，９１と、接合対象部位への接合エネルギの付与により当該接合対象部位の接合が完了したか否かを検知する検知部３５２と、接合対象部位の接合が完了した後、エネルギ付与部８１，９１を制御して、当該エネルギ付与部８１，９１から接合対象部位に対して振動エネルギを付与させるエネルギ制御部３５１とを備える。
