A sheath body (5) having an elongated rotating portion (5A) on the distal end side and a fixed portion (5B) on the proximal end side connected to be relatively rotatable about a longitudinal axis (A) A first passage formed along the first passage, a second passage formed in parallel with the passage in the main body, and a second passage formed in the main body along the radial direction, , The proximal end portion of the injection needle (1) inserted into the passage (8) is drawn out, and the needle (1) is opened in accordance with the relative rotation between the fixed portion (5B) and the rotating portion (5A) (3) provided with a needle (1) in a circumferential direction at an interval from the fixed part (5B) and a withdrawal opening ) Is fixed in the circumferential direction with respect to the fixed portion (5B) at a position where the needle (1) protrudes from the distal end of the main body (5), and the needle (1) (5) to provide an endoscope-covering sheath (2) comprising a plurality of holding portions (61, 63) and to release in the position to be housed in.長手軸(A)回りに相対回転可能に連結された先端側の細長い回転部(5A)と基端側の固定部(5B)とを有するシース本体(5)と、該本体(5)に軸(A)に沿って形成された第1の通路(7)と、本体(5)に通路(7)と並列に形成された第2の通路(8)と、本体(5)の半径方向外側において開口し、通路(8)内に挿入されている注射針(1)の基端部分が引き出されるとともに、固定部(5B)と回転部(5A)との相対回転に伴って針(1)の引き出し位置を固定部(5B)に対して周方向に変更可能な引出口(9)と、固定部(5B)に周方向に間隔を空けて設けられ、針(1)を有する注射器(3)を、針(1)が本体(5)の先端から突出する位置において固定部(5B)に対して周方向に固定し、針(1)が本体(5)内に収納される位置において解放する複数の保持部(61,63)とを備える内視鏡用シース(2)を提供する。
