Without the benign prostatic hyperplasia treatment instrument for performing the present invention relates transurethral resection of the prostate, is to replace the multiple instrument, it is to obtain a structure can be easily removed efficiently and prostate with less blood loss . [SOLUTION] prostatic hyperplasia treatment instrument (21), which is provided rod-shaped electrode (22), the pressure side tip portion rod-shaped electrode (22), the pressing portion for pressing the prostate and (23), the pressing portion ( provided on the pressing side end portion of the 23), I am a protruding electrode of a discharge can be protruded, and (24) with respect to the prostate. Projection electrodes (24), from the pressing side tip portion pressing portion (23), the front end portion of the pressing direction projecting protrusion electrodes in (24), the pressing direction in a direction intersecting the pressing direction pressing portion (23) when viewed from the direction perpendicular to and located inwardly of the pressing portion (23). [Selection Figure] Figure 3【課題】経尿道的前立腺切除術を行うための前立腺肥大症治療器具において、複数の器具の交換を行うことなく、少ない出血量で前立腺を効率良く且つ容易に除去可能な構成を得ることにある。【解決手段】前立腺肥大症治療器具(21)は、棒状電極(22)と、棒状電極(22)の押圧側先端部分に設けられ、前立腺を押圧する押圧部(23)と、前記押圧部(23)の押圧側先端部分に設けられ、前記前立腺に対して放電可能な突起状の突出電極(24)と、を備える。突出電極(24)は、押圧部(23)の押圧側先端部分から、押圧部(23)の押圧方向と交差する方向に突出し、突出電極(24)における押圧方向の前端部分は、前記押圧方向に対して直交する方向から見て、押圧部(23)の内方に位置する。【選択図】図3
