PROBLEM TO BE SOLVED: To provide a vibration type driving device that prevents an artifact from being generated in an image of a magnetic resonance imaging apparatus even when installed in the vicinity of or inside a gantry of the magnetic resonance imaging apparatus.SOLUTION: A vibration type driving device includes a piezoelectric element, an elastic member to which the piezoelectric element is fastened, a driven member in which a relative displacement occurs between the elastic member and itself by exciting vibration in the elastic member, and a contact member provided between the elastic member and the driven member. Each of the elastic member and the driven member is composed of a non-metal material, and the contact member is composed of a resin, a non-oxide ceramic, or a ceramic having a filler added thereto.COPYRIGHT: (C)2014,JPO&INPIT【課題】 本発明は磁気共鳴装置イメージング装置のガントリー近傍または内部に設置しても磁気共鳴イメージング装置の画像へアーチファクトを発生させることのない、振動型駆動装置を提供する。【解決手段】 圧電素子と、前記圧電素子が固着された弾性部材と、前記弾性部材に振動が励起されることによって、前記弾性部材との間に相対変位が生じる被駆動部材と、前記弾性部材と前記被駆動部材との間に設けられた接触部材と、を備え、前記弾性部材及び前記被駆動部材は、それぞれ非金属材料から成り、前記接触部材は、樹脂、非酸化物系セラミックス、または充填剤が添加されたセラミックスからなる振動型駆動装置を提供する。【選択図】 図2
