PROBLEM TO BE SOLVED: To provide a clamp, when occluding a flow path of a tube, capable of reliably occluding the flow path of the tube without applying strong force.SOLUTION: The clamp includes a base part 2 and a movable part 3, where the movable part 3 includes a pressing assistance part (10 or 20) formed on an upper part U side. The pressing assistance part (10 or 20) has at least any of a crest portion (10T or 20T) and a top surface portion (10PL or 20PL). Alternatively, the pressing assistance part (10 or 20) has both of the crest portion (10T or 20T) and a top surface portion (10PL or 20PL). When having the crest portion (10T or 20T), the clamp has a base end-side inclined portion (10TPE or 20TPE) at the base end PT side of the crest portion (10T or 20T).COPYRIGHT: (C)2016,JPO&INPIT【課題】チューブの流路を閉塞する際に、強い力を加えなくてもチューブの流路を確実に閉塞できるクランプを提供すること。【解決手段】基部2と可動部3とを有し、可動部3は、上部U側に押圧補助部(10、20)を形成し、押圧補助部(10、20)は、少なくとも頂部(10T、20T)もしくは天面部(10PL、20PL)のどちらか一方を有する。または頂部(10T、20T)と天面部(10PL、20PL)の両方を有してもよい。頂部(10T、20T)を有する場合は、当該頂部(10T、20T)の基端PE側に基端側傾斜部(10TPE、20TPE)を有する。【選択図】図1