When the transportation liquid device to the pole of the transportation liquid stand removing from fixing and the pole, because when the transportation liquid device is supported, the rotary knob the necessity to continue to turn many revolutions is gone, time loss of the nursing loyal retainer physical burden is held down to minimum. The clamp base revolution it provides the grip component where grips the other peripheral surface of 1 which formed the grip form section and the standing up form section which grip the peripheral surface of one side of the pole which possesses the diameter which differs the transportation liquid classified by stand and the pole possibly with the one end, at the same time in addition it has with the principal axis body 5 which, locks the rotary knob which it turns is operated in the edge by the fact that grip component 8 is moved attendant upon the revolution operation of reciprocal direction of rotary knob 9, the clamp device 20 which is put in grip state or a grip cancellation state for pole 30, it forms the screw on that inside perimeter surface,In order, at the same time the tubular screw component to become tooth combination state and a tooth combination cancellation state for 2 which does the principal axis body and the female screw section, in male screw scene directing 4 of the pair which is built in to the receipt section of the principal axis body, 4 and the rotary knob, movement it is arranged possibly with operative position and the alienation position which it is moved are operated it has the operation expedient 103 which possesses the function part 3f which puts the male screw scene of pair in tooth combination cancellation state.輸液装置を輸液スタンドのポールに固定およびポールから取り外すときに、輸液装置を支えた状態で、回転ノブを何回転も回し続ける必要がなくなるので、看護士の時間的損失と肉体的負担を最小限に抑える。輸液スタンド別に異なる直径を有するポールの一方の外周面を把持する把持形状部と起立形状部とを形成したクランプ基部1と、ポールの他方の外周面を把持する把持部材をその一端で回転可能に設け、かつその他端で回転操作される回転ノブを固定した主軸体5とを備え、回転ノブ9の正逆方向の回転操作にともない把持部材8を移動することで、ポール30に対する把持状態または把持解除状態にするクランプ装置20であって、ネジ部をその内周
