PROBLEM TO BE SOLVED: To provide a safe chair for operator preventing a seat part from being lowered unintentionally.SOLUTION: A chair for operator includes a gas cylinder 10 in a support post supporting a seat part and can adjust height of the seat part by extending/contracting the gas cylinder 10 by pressing down a lifting/lowering pedal 20. A cover member 30 for preventing erroneous operation is arranged so as to advance/retreat in an upper part of the pedal 20. When height of the seat part is adjusted, the cover member 30 for preventing erroneous operation is rotated, the cover member 30 for preventing erroneous operation is locked at a position enabling the pedal 20 to be operated, locking is, after height adjustment, released by flipping the pedal 20 up, and the cover 30 for preventing erroneous operation is rotated to a position covering an upper part of the pedal 20. Accordingly, the pedal 20 is prevented from being pressed down unintentionally during an operation.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】意図せずに座部が下降することがない安全な術者用椅子を提供する。【解決手段】術者用椅子は、座部を支持する支柱部にガスシリンダ10を備え、昇降用のペダル20を押し下げることによってガスシリンダ10を伸縮させることで、座部の高さ調整が可能となっている。ペダル20の上部に誤操作防止用カバー部材30を進退可能に設けている。座部の高さ調整を行う場合は、誤操作防止用カバー部材30を回動させて、ペダル20が操作できる位置で誤操作防止用カバー部材30をロックし、高さ調整の後、ペダル20を跳ね上げることによってロックが解除され、誤操作防止用カバー部材30がペダル20の上方を覆う位置に回動される。これにより、術中に意図せずにペダル20が押し下げられるのを防止できる。【選択図】図4
