Provided is a bipolar electrosurgical device that makes it possible to inexpensively achieve a configuration in which a large electrical current is not required and high-frequency energy is applied to living tissue in a uniform manner. The present invention is a bipolar electrosurgical device (100) that comprises a first gripping section (121) and a second gripping section (111) for gripping living tissue and that serves to fuse living tissue that is gripped by the first and second gripping sections. The bipolar electrosurgical device (100) is provided with: a planar first electrode that is arranged along the gripping surface of the first gripping section (121) and a roller-shaped second electrode (113) that moves over the second gripping section (111) so as to follow the gripping surface of the first gripping section (121) in a state in which living tissue is gripped by the first gripping section (121) and the second gripping section (111). The bipolar electrosurgical device (100) is characterized in that living tissue is fused at each position to which the roller-shaped second electrode (113) moves by energizing the interval between the roller-shaped second electrode (113) and the planar first electrode.Linvention concerne un dispositif électrochirurgical bipolaire qui permet dobtenir de manière peu coûteuse une configuration dans laquelle un courant électrique important nest pas requis et une énergie haute fréquence est appliquée à des tissus vivants de manière uniforme. La présente invention concerne un dispositif électrochirurgical bipolaire (100) qui comprend une première section de préhension (121) et une seconde section de préhension (111) destinées à saisir des tissus vivants et qui sert à fusionner les tissus vivants qui sont saisis à laide des première et seconde sections de préhension. Le dispositif électrochirurgical bipolaire (100) est équipé : dune première électrode plane qui est agencée le long de la surface de préhension de la première section de p
