PROBLEM TO BE SOLVED: To provide a needleless connector with a new structure in which an inlet and an outlet of a medical solution passage are provided on one side and the other side of a housing in a lengthwise direction and the back-flow of blood and the like can be prevented.SOLUTION: In a needleless connector in which a medical solution passage 14 is provided inside a housing 12, an elastic body storage part 54 is provided in the housing 12, a bag-shaped elastic body 70 is disposed in the elastic body storage part 54, the elastic body storage part 54 comprises a support part for supporting an underside of the bag-shaped elastic body 70, and the medical solution passage 14 is formed on the outer peripheral side of the bag-shaped elastic body 70. Thus, the volume of the medical solution passage 14 can be increased by pressing and elastically deforming the bag-shaped elastic body 70 by a male lure 94 inserted through an inlet 16, and the increased volume of the medical solution passage 14 can be decreased by pulling out the male 94 and restoring the elastic deformation of the bag-shaped elastic body 70.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】ハウジングの長さ方向の一方側と他方側に薬液流路の入口と出口が設けられ、且つ、血液等の逆流が防止され得る、新規な構造のニードルレスコネクターを提供すること。【解決手段】ハウジング12内に薬液流路14が設けられているニードルレスコネクターにおいて、前記ハウジング12に弾性体収容部54を設けると共に、袋状の弾性体70を該弾性体収容部54に配置する一方、該弾性体収容部54において該袋状弾性体70の下面を支持する支持部を有し且つ該袋状弾性体70の外周側に前記薬液流路14を形成した。これにより、前記入口16から挿し入れられる雄ルアー94で該袋状弾性体70を押して弾性変形させることで該薬液流路14の容積を増大させると共に、該雄ルアー94が抜き取られて該袋状弾性体70の弾性変形を復元解消させることで該薬液流路14の増大した容積を縮小させるようにした。【選択図】図4
