US Patent 7717914 Treatment device

A treatment device of this invention has a pair of first, second jaws capable of opening/closing with respect to each other at the tip end portion and comprises a tissue pressing portion in the relatively dull shape provided on a surface portion of the first jaw opposite to the second jaw and having a projection portion formed projecting toward the second jaw side, a receiving member provided on a surface portion of the second jaw opposite to the first jaw at a position opposite to the tissue pressing portion, and a plurality of electrode portions provided at least at one of the first jaw and the second jaw so that a high-frequency current flows through a living tissue compressed by the tissue pressing portion and the receiving member.