Disclosed are an electrode for high-frequency surgery, a high-frequency surgery device, and a method for controlling same, wherein the electrode for high-frequency surgery can be easily inserted and moved inside the lumens inside the body, and can expand a conduction area of a high-frequency current after reaching an area to be treated. The electrode for the high-frequency surgery, according to the present invention, comprises: a balloon and a conductive structure, which is arranged on the outside of the balloon and the exterior shape of which varies according to the volume of the balloon.Cette invention concerne une électrode pour chirurgie à haute fréquence, un dispositif pour chirurgie à haute fréquence et une méthode de commande associée. Lélectrode de linvention est facile à insérer et à déplacer dans les lumières de lorganisme, et peut développer une zone de courant à haute fréquence après avoir atteint la zone à traiter. Lélectrode de linvention comprend un ballonnet et une structure conductrice disposée à lextérieur du ballonnet, la forme extérieure de la structure variant en fonction du volume du ballonnet.신체 관강 내에도 삽입 및 이동이 용이하고, 시술부위에 도달한 후에는 고주파 전류의 통전부위를 확장시킬 수 있도록 한 고주파 수술용 전극, 고주파 수술장치 및 이의 제어방법이 개시된다. 본 발명에 따른 고주파 수술용 전극은 벌룬 및 상기 벌룬의 외측에 배치되어 상기 벌룬의 부피에 따라 외형이 가변되는 전도체를 포함한다.
