Movable obstetrical hook, long-handle pulling hook, long-handle embryo-breaking knife, long-handle pull-push device, joint lever, short-distance obstetrical hook, rope-guiding carrier, wire saw, embryo-breaking handle, joint lever of embryo-breaking device, fixation frame, rope guider, calf-pulling rope, blade-hiding knife, long-handle gloves, joint lever of peeling spade, trigical peeling spade, round peeling spade, horizon peeling spade, aluminium alloy case,etc.