Energy treatment device

An energy and/or ultrasonic wave treatment device comprising:

• a sheath, the sheath including a hollow portion and having a central axis along which the sheath is extends;
• a fixed handle provided at a proximal end of the sheath;
• a movable handle configured to move relative to the fixed handle;
• a jaw provided at a distal end of the movable handle;
• and
• a probe inserted into the hollow portion of the sheath;
• wherein:
• the fixed handle and the movable handle are rotatably fixed to each other with a metal member,
• the jaw is openable and closable relative to the probe in conjunction with a rotating operation of the movable handle,
• the central axis and a rotational axis of the movable handle cross each other in an overhead crossing with no intersection,
• the movable handle comprises a jaw side attaching portion, and a recess portion formed by a first recess and a second recess,
• the first recess is a through hole which penetrates the jaw side attaching portion, and
• the through hole comprises a first hole portion in which the metal member is arranged, and a second hole portion in which the metal member is not arranged.