Endoscope apparatus

An endoscope apparatus comprising:

• an endoscope including a flexible insertion section to be inserted into a human body;
• a flexible channel attached to the insertion section so that a part forms a passage in a longitudinal direction of the insertion section;
• and
• an assistant arm movably inserted into the passage and manipulated by a control device,
• wherein the assistant arm includes
• forceps capable of gripping a human body tissue,
• a bending section bent by the control device to pull the human body tissue gripped by the forceps, and
• a flexible tube connecting the bending section and the control device,
• wherein a holder maintaining a linear form of the flexible channel at a portion where the flexible tube is inserted into the passage,
• wherein the holder includes a base forming a linear type mounting groove into which the flexible channel is inserted, and a body formed above the base and gripped by a user so as to adjust a position and a direction of the mounting groove,
• wherein the body forms a symmetric form based on a reference surface to be gripped with any one of both hands, and
• the mounting groove includes a first mounting groove having a spacing angle with the reference surface, and a second mounting groove having a symmetric form with the first mounting groove based on the reference surface.