PROBLEM TO BE SOLVED: To provide a drip tube in which a downstream side opening of the drip tube can be reliably maintained in a closed state upon completion of drip infusion, even if the drip tube is shaken.SOLUTION: A drip tube includes: a base part 8 fixed in the peripheral edge of a downstream side opening 4b2 of a tube body 4a in a lower part in a tube body 4a, and formed of a though-hole 7 of substantially the same diameter or a little smaller diameter as/than a tube 3 in the center and a flowing interruption part 9 integrally formed in a portion of the though-hole 7 of this base part 8, and inserted in the tube 3 connected to the downstream side opening 4b2. The drip tube is provided with an opening/closing member 6 for opening and closing the downstream side opening 4b2. As a result, when the infusion in the tube body 4a is used up, a pressure in the tube 3 connected to the downstream side opening 4b2 becomes higher than the inside of the tube body 4a of a drip tube 4 by the pressure of the vein in a human body, and the flowing interruption part 9 is easily deformed flatly, and thereby the downstream side opening 4b2 is reliably closed and the regurgitation of the blood is prevented.COPYRIGHT: (C)2016,JPO&INPIT【課題】点滴筒が揺らされても、点滴が終了すると点滴筒の下流側開口を確実に閉塞状態に保持できるようにする。【解決手段】筒本体4a内の下部に、筒本体4aの下流側開口4b2の周縁に固着され中央にチューブ3とほぼ同径もしくは少し小なる径の透孔7が透設された基部8と、この基部8の透孔7部分に一体に形成され下流側開口4b2に接続されたチューブ3内に挿入された通流断続部9とを備え、下流側開口4b2を開閉する開閉部材6を設ける。これにより、筒本体4a内の輸液がなくなると、下流側開口4b2に接続されたチューブ3内部の圧力が人体の静脈の圧力によって点滴筒4の筒本体4a内部よりも高くなって通流断続部9が扁平に容易に変形し、下流側開口4b2を確実に閉塞し、血液の逆流が防止される。【選択図】図3
