Grip portion provided so as to be connected insertion portion to be inserted into a body cavity (42), the proximal end insertion portion (42) and (400), an endoscopic treatment instrument (41), the tip lens (54b) wiping unit for wiping by rotating the (418) deposits that adhere to (54b) the observation surface is arranged in, is arranged at the distal end insertion portion (42) and (417), the insert shaft member is inserted through the (42), are linked dispel portion (417) and (500), the entire circumference tip grip portion (400) of (400f) in the circumferential direction of the longitudinal grip portion (400) is disposed across, and coupled with (500) axis member, and includes an operation unit for operating the (417) wiping portion through the (500) axis member, and (419). Central axis operation unit (419) to (501a), while the endoscope (51) is inserted through the gripping portion (400) insertion portion (42), the central axis endoscope (51) ( It is coaxial with 501b).内視鏡処置具(41)は、体腔内に挿入される挿入部(42)と、挿入部(42)の基端に連設される把持部(400)と、レンズ(54b)の先端部に配設されている観察面(54b)に付着する付着物(418)を回動することで払拭し、挿入部(42)の先端に配設されている払拭部(417)と、挿入部(42)を挿通し、払拭部(417)と連結している軸部材(500)と、把持部(400)の長手方向の周方向において把持部(400)の先端(400f)の全周に渡って配設され、軸部材(500)と連結し、軸部材(500)を介して払拭部(417)を操作する操作部(419)と、を具備する。操作部(419)の中心軸(501a)は、内視鏡(51)が把持部(400)と挿入部(42)とを挿通している状態で、内視鏡(51)の中心軸(501b)と同軸である。
