The present invention has an object of providing a medical instrument capable of estimating the timing of bending operation easily, wherein an operating line for towing is buried inside. The medical instrument has a medical instrument body, the first marker and the second marker. The first marker and the second marker are arranged in the distal end portion of the medical instrument body. The second marker is arranged closer to the proximal end portion of the medical instrument body than the first marker. The tip of the operating line is fixed to the portion which is closer to the distal end portion of the medical instrument body than the second marker.本發明之目的在於提供一種醫療機器，其係將牽引操作用之操作線埋設於內部者，可容易地判斷進行彎曲操作之最佳時機。醫療機器包含醫療機器本體、操作線、第1標記物、及第2標記物。第1標記物及第2標記物設置於醫療機器本體之遠端部。第2標記物設置於較第1標記物靠醫療機器本體之近端側之部分。操作線之前端部被固定於該醫療機器之較第2標記物靠遠端側之部分。
