PROBLEM TO BE SOLVED: To provide a resin-made medical clip which can be used in an endoscope clip device and which can be stably opened and closed. A medical opening / closing clip (1A) comprising a resin clip body (10) and a resin caulking ring (2) fitted onto the clip body (10), wherein the clip body (10) includes a pair of opposed arm portions (11). A connecting portion 12 that connects the base ends of the arm portions 11 is provided. Each arm portion 11 has a curved portion 14 on the base end side, a holding portion 15 on the distal end side, and an intermediate portion between the bending portion 14 and the holding portion 15. Have 16. The curved portion 14 is curved in an arc shape, and the thickness of the intermediate portion 16 is larger than the thickness of the curved portion 14. The clip body 10 is closed when the crimp ring 2 is fitted onto the clip body 10 on the side of the connecting portion 12 with respect to the bending portion 14, and is opened when the crimp ring 2 is sliding from the connecting portion 12 to the bending portion 14 to perform the crimp ring. 2 is slid from the curved portion 14 to the intermediate portion 16 and is closed. [Selection diagram] FIG. 1A【課題】内視鏡用クリップ装置でも使用することのできる樹脂製の医療用クリップであって、安定に開閉できるものを提供する。【解決手段】樹脂製のクリップ本体１０とクリップ本体１０に外嵌する樹脂製のカシメリング２を備えた医療用の開閉クリップ１Ａであって、クリップ本体１０は一対の対向するアーム部１１と、各アーム部１１の基端を繋ぐ連結部１２を有し、各アーム部１１は、基端側に湾曲部１４、先端側に挟持部１５、湾曲部１４と挟持部１５との間に中間部１６を有する。湾曲部１４は弧状に湾曲しており、中間部１６の厚さは湾曲部１４の厚さより大きい。クリップ本体１０は、カシメリング２が湾曲部１４より連結部１２側でクリップ本体１０に外嵌した状態で閉じ、カシメリング２が連結部１２から湾曲部１４へ摺動した状態で開き、カシメリング２が湾曲部１４から中間部１６へ摺動した状態で閉じる。【選択図】図１Ａ
