A deflection device of steerable endoscope includes a first base, a second base, elastic reposition members and tendon wires. The second base is located above the first base along the endoscope center axis. The elastic reposition members are inlaid between the first and the second bases. Each elastic reposition member includes a first plate connecting to the first base, a second plate connecting to the second base, and a waveform bar connecting the first and the second plates. The amplitude of the waveform bar is not parallel to the endoscope center axis. The tendon wires are located on the two opposite sides of each elastic reposition member. The tendon wires are parallel to and distant from the endoscope center axis. Bending of the steerable endoscope is precisely controlled, and structure of the deflection device is simplified in the invention.本發明揭露一種內視鏡轉向裝置，包括第一基座、第二基座、複數個彈性復位件與線體。第二基座沿著內視鏡中心軸方向而位於第一基座上方。彈性復位件嵌於第一與第二基座之間。各彈性復位件包括連接於第一基座之第一板體、連接於第二基座之第二板體，與連接於第一與第二板體間之波形條。各波形條之振幅方向不平行於內視鏡中心軸方向。線體平行於內視鏡中心軸方向而設置於各彈性復位件兩側，且線體與內視鏡中心軸間有一徑向間距。本發明利用具波形條之彈性復位件搭配線體進行轉向驅動，可精準控制內視鏡轉向操作，且能精簡裝置零件。
