Patent ID: 7789883

Claim:
A treatment system which applies energy to a living tissue to perform a treatment, comprising: an energy source which supplies the energy; a pair of holding portions which hold the living tissue, at least one of the holding portions being configured to relatively move with respect to the other holding portion; an output portion disposed on at least one of the holding portions and connected with the energy source, the output portion being configured to thermally denature the living tissue by the energy supplied from the energy source; and a cooling section which inhibits the spread of heat in a direction away from the output portion; wherein the cooling section includes a circulating-type conduit having a thermal conductivity so that, when a fluid for cooling is passed through the cooling section, the heat of the fluid is transferred to the outside of the conduit, and the conduit surrounds the exterior of the holding portions, and is in intimate contact with the living tissue when the living tissue is held by the holding portions.