PROBLEM TO BE SOLVED: To provide a liquid injection part which has fewer number of components, saves priming volume of liquid in an injection tube, and does not cause residual blood, residual transfusion, and the like in the injection tube.SOLUTION: A connection member 21 projects a wing-shaped projection part 22 in s side part direction on a first end part side, the first end part side of the connection member 21 is integrally connected to the second end part side of a fixed part 13 of a communication member 11, and a wall on the first end part side of the connection member 21 forms a step part 1D between the first end part side of the connection member 21 and the second end part side of the fixed part 13, an injection tube ST is a continuous tube without joint from the first end part side to the second end part side, the communication member 11 is inserted into the inside on the second end part side of the injection tube ST from the first end part side to the second end part side, and all of outer peripheries in the longitudinal direction of the communication member 11 are covered with the second end part side of the injection tube ST.COPYRIGHT: (C)2012,JPO&INPIT【課題】部品点数が少なく、注入チューブ内の液体のプライミングボリュームを省力化し、注入チューブ内での血液の残血、輸液の残液等を生じることがない液体注入部品を提供すること。【解決手段】接続部材21は、第1端部側の側部方向に翼状の突起部22を突設し、接続部材21の第1端部側は、連通部材11の固定部13の第2端部側と一体に接続し、接続部材21の第1端部側の壁は、接続部材21の第1端部側と固定部13の第2端部側との間の段部1Dを形成し、注入チューブSTは、第1端部側から第2端部側にわたって継ぎ目のない連続したチューブであり、連通部材11は、第1端部側から第2端部側に亘って、前記注入チューブSTの第2端部側の内部に挿入して、連通部材11は、全ての長手方向の外周を前記注入チューブSTの第2端部側で覆った、液体注入部品1を提供すること。【選択図】図1
