In The present invention low frequency treatment device, and contact to the electrical connection by contacting the contact terminal to the conductive wire It provides the terminal structure. contact terminal structure of A low-frequency treatment instrument, the conductive wire 26 is provided on the surface, the upper surface 22a extending in the axial direction 0 one side of the axial direction from the end of the so as to project, the lower surface 12a away in the direction crossing the upper surface of uniaxially 0 is located on the flexible strip member 28b, and the first to be in contact with the surface of the opposed to strips on the lower surface It includes a second contact portion contact terminals 32 and 32b are formed opposite to the contact portion 32a and the top surface edge. The first contact portion 32a of the contact terminals, are pressing the surface of the piece member positioned on the lower surface so as to protrude from the end portion of the upper surface are electrically connected.BACKGROUND 3【課題】低周波治療器において、導電線に接触端子を接触して電気接続する接触端子構造を提供する。【解決手段】低周波治療器の接触端子構造は、導電線26が表面に設けられ、一軸方向に延びる上面22a0の端部から一軸方向の一側に突出して、上面から一軸方向に交差する方向に離間する下面12a0上に位置するフレキシブルな片部材28b、及び下面に対向して片部材の表面に当接する第1接触部32aと上面端部に対向する第2接触部32bとが形成された接触端子32を備える。接触端子の第1接触部32aにより、上面の端部から突出して下面上に位置する片部材の表面が押さえられて電気接続される。【選択図】図3