The present invention comprises: (a) a device body comprising a first fixing mechanism for fixing the proximal end of the first elongated member of the accessory device to the device body； (b) a second elongated member of the operation mechanism and the accessory device A drive comprising a second fixing mechanism for fixing the proximal end of the bar-like member to the drive, and the operating mechanism moving the second elongated member relative to the first elongated member (c A) a mounting device for attaching the device body to the endoscope； The present invention further provides an endoscope system comprising a drive device in the form of a combination of an endoscope and an accessory device, and provides a kit consisting of such drive device and one or more accessory devices. .本願発明は、（ａ）付属装置の第１長尺状部材の近位端を装置本体に固定する第１固定機構を備えた装置本体と、（ｂ）操作機構と付属装置の第２長尺状部材の近位端を駆動装置に固定する第２固定機構とからなる駆動装置と、操作機構が、第１長尺状部材に対して第２長尺状部材を移動することと、（ｃ）装置本体を内視鏡に取り付ける取付け具と、からなる駆動デバイスを提供する。本願発明は、内視鏡と付属装置とを組み合わせた形式からなる駆動デバイスを備える内視鏡システムをさらに提供し、かつこの種の駆動デバイスと１つ以上の付属装置とから成るキットを提供する。
