A clip (10; 30; 40; 50; 70; 150a, 150b, 150c, 150d; 160) for gripping tissue having a first arm (12; 32; 42; 152; 162; 172; 182; 192; 202) with a first claw at a distal end of the first arm (12; 32; 42; 152; 162; 172; 182; 192; 202), and a second arm (13; 33; 43) with a second claw at a distal end of the second arm (13; 33; 43), and a pressing tube (16; 66; 116; 156; 206) in which the clip (10; 30; 40; 50; 70; 150b, 150c, 150d; 160) can slidably retract to close the clip (10; 30; 40; 50; 70; 150a, 150b, 150c, 150d; 160), wherein the first arm (12; 32; 42; 152; 162; 172; 182; 192; 202) and the second arm (13; 33; 43) are connected to each other and configured to move in a direction toward each other to close the clip (10; 30; 40; 50; 70; 150a, 150b, 150c, 150d; 160); and wherein the clip (10; 30; 40; 50; 70; 150b, 150c, 150d; 160) includes a first anchor (14a; 34a; 44a; 64a; 74a; 84a; 94a, 94b; 104a; 114; 114a; 124a; 134a; 144; 154) protruding from the first arm (12; 32; 42; 152; 162; 172; 182; 192; 202) in a direction other than the direction that the first arm (12; 32; 42; 152; 162; 172; 182; 192; 202) and the second arm (13; 33; 43; 150b, 150c, 150d) are configured to move toward each other to close the clip (10; 30; 40; 50; 70; 150a, 150b, 150c, 150d; 160) and a second anchor (14b; 34b; 44b; 64b; 74b; 84b; 94c, 94d; 104b; 114b; 124b; 134b) protruding from the second arm (13; 33; 43) in a direction other than the direction that the first arm (12; 32; 42; 152; 162; 172; 182; 192; 202) and the second arm (13; 33; 43) are configured to move toward each other to close the clip (10; 30; 40; 50; 70; 50a, 150b, 150c, 150d; 160), characterized in that the first anchor (34a; 44a) protrudes through a slit (35; 45) in the first arm (32; 42); and the second anchor (34b; 44b) protrudes through a slit in the second arm (33; 43), wherein the first anchor (34a; 44a) and the second anchor (34b; 44b) are connected to the clip by flexible members (31a, 31b, 41a, 41b), respectively, wherein the first anchor (34a; 44a) and the second anchor (34b; 44b) are shielded by inner surfaces of the first arm (32; 42) and the second arm (33; 43) when the clip is in a closed state, and wherein, when the clip is in an opened state, the first anchor (34a; 44a) protrudes through the slit (35; 45) in the first arm (32; 42) and the second anchor (34b, 44b) protrudes through the slit in the second arm (33; 43). wherein the first arm (12; 32; 42; 152; 162; 172; 182; 192; 202) and the second arm (13; 33; 43) are connected to each other and configured to move in a direction toward each other to close the clip (10; 30; 40; 50; 70; 150a, 150b, 150c, 150d; 160); and wherein the clip (10; 30; 40; 50; 70; 150b, 150c, 150d; 160) includes a first anchor (14a; 34a; 44a; 64a; 74a; 84a; 94a, 94b; 104a; 114; 114a; 124a; 134a; 144; 154) protruding from the first arm (12; 32; 42; 152; 162; 172; 182; 192; 202) in a direction other than the direction that the first arm (12; 32; 42; 152; 162; 172; 182; 192; 202) and the second arm (13; 33; 43; 150b, 150c, 150d) are configured to move toward each other to close the clip (10; 30; 40; 50; 70; 150a, 150b, 150c, 150d; 160) and a second anchor (14b; 34b; 44b; 64b; 74b; 84b; 94c, 94d; 104b; 114b; 124b; 134b) protruding from the second arm (13; 33; 43) in a direction other than the direction that the first arm (12; 32; 42; 152; 162; 172; 182; 192; 202) and the second arm (13; 33; 43) are configured to move toward each other to close the clip (10; 30; 40; 50; 70; 50a, 150b, 150c, 150d; 160), characterized in that the first anchor (34a; 44a) protrudes through a slit (35; 45) in the first arm (32; 42); and the second anchor (34b; 44b) protrudes through a slit in the second arm (33; 43), wherein the first anchor (34a; 44a) and the second anchor (34b; 44b) are connected to the clip by flexible members (31a, 31b, 41a, 41b), respectively, wherein the first anchor (34a; 44a) and the second anchor (34b; 44b) are shielded by inner surfaces of the first arm (32; 42) and the second arm (33; 43) when the clip is in a closed state, and wherein, when the clip is in an opened state, the first anchor (34a; 44a) protrudes through the slit (35; 45) in the first arm (32; 42) and the second anchor (34b, 44b) protrudes through the slit in the second arm (33; 43).