The present invention I provide an endoscope cleaning sheath tensile strength in the direction parallel to the longitudinal axis is secured. An endoscope cleaning sheath 3, the sheath body 21 (the multi-lumen tube), the distal end-side fixing portion 22 which is fixed to the distal end of the sheath body, the proximal end being secured to the proximal end of the sheath body It includes a side fixed part 23,. The endoscope cleaning sheath is fixed to the tip distal end-side fixing portion in the distal end side connecting position P1, and a linear portion which base end is fixed to the base end side fixing part at the proximal end side connection position P2, the front end It extends along the line center axis L between the side connection position and a proximal end side connection position, the tensile strength in the direction parallel to the longitudinal axis C, with a high linear part 51 from the sheath body. .BACKGROUND 2【課題】長手軸に平行な方向についての引張り強度が確保された内視鏡洗浄シースを提供する。【解決手段】内視鏡洗浄シース3は、シース本体21(マルチルーメンチューブ)と、シース本体の先端部に固定される先端側固定部22と、シース本体の基端部に固定される基端側固定部23と、を備える。内視鏡洗浄シースは、先端側接続位置P1で先端が先端側固定部に固定され、基端側接続位置P2で基端が基端側固定部に固定される線状部であって、先端側接続位置と基端側接続位置との間で線芯軸Lに沿って延設され、長手軸Cに平行な方向についての引張り強度がシース本体より高い線状部51を備える。【選択図】図2
