Cutting device, forceps and gripping/cutting method

A cutting device comprising:

• a contact mechanism, including at least a first contact member and a second contact member, configured to rotate the first contact member toward the second contact member to bring the first contact member and the second contact member into contact with a living tissue, and
• a cutting mechanism, including at least a cutter, that is configured to cut the living tissue in a state where the first contact member and the second contact member are in contact with the living tissue by the contact mechanism,
• wherein the first contact member and the second contact member are served as a first gripping member and a second gripping member that are both configured to grip the living tissue, and the contact mechanism is served as a gripping mechanism in which the first gripping member is rotated toward the second gripping member to grip the living tissue by the first contact member and the second contact member,
• wherein the cutting mechanism includes the cutter attached alongside an outermost lateral surface of the first gripping member and the second gripping member, and, in a state in which the living tissue is gripped by the first gripping member and the second gripping member of the gripping mechanism, the cutter is rotated along the outermost lateral surface of the first gripping member in the same direction as the rotation of the first gripping member, and joined to the second gripping member, thereby cutting the living tissue.