PROBLEM TO BE SOLVED: To provide a high frequency treatment instrument for an endoscope which prevents an insulation coating from peeling by bringing a treatment part having a pair of grip pieces into contact with a holding frame while supporting the treatment part with the holding frame.SOLUTION: A high frequency treatment instrument 100 for an endoscope comprises: an operation wire 30 a treatment part 10 having a pair of grip pieces (scissor pieces 12, 22) which are pivotally supported by a rotary shaft 29 so as to be openable and closable, comprise blade parts 13, 23, and in which the substantially whole area of a peripheral surface excluding the blade parts 13, 23 is covered with insulation coatings 18, 28 a connection terminal 52 for applying a high frequency voltage to the blade parts 13, 23 an operation part 50 for operating the treatment part 10 by the operation of the operation wire 30, and opening and closing the grip pieces (the scissor pieces 12, 22) a holding frame 20 for accommodating a part of the treatment part 10 inside a pair of arm parts 16, and holding both ends of the rotary shaft 29 and a spacer part 15, which is disposed between an inner surface 152 of the arm part 16 and an opposing surface 154 facing the inner surface 152 of the arm part 16 of the treatment part 10 accommodated in the arm part 16, for separating the inner surface 152 and the opposing surface 154.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】一対の把持片を備える処置部が、保持枠によって支持されつつも処置部が保持枠と接触することで絶縁性被膜が剥離することが防止された内視鏡用高周波処置具を提供する。【解決手段】内視鏡用高周波処置具100は、操作ワイヤ30と、回動軸29により開閉動作可能に軸支され刃部13、23を備え刃部13、23を除いた周面の略全面が絶縁性被膜18、28で被覆された一対の把持片(鋏片12、22)を備えた処置部10と、刃部13、23に高周波電圧を印加する接続端子52と、操作ワイヤ30の操作で処置部10を操作し把持片(鋏片12、22)を開閉させる操作部50と、一対の腕部16の内側に処置部10の一部を収容すると共に回動軸29の両端を保持する保持枠20と、を有し、腕部16の内側面152と、腕部16に収容された処置部10の腕部16の内側面152に対向する対向面154と、の間に配置され、内側面152と対向面154とを離間させるスペーサ部15を備える。【選択図】図3
