PROBLEM TO BE SOLVED: To provide a needleless connector with a novel structure in which inlet and outlet ports of a chemical solution flow path are disposed on one side and the other side of the longitudinal direction of a housing respectively, and blood is prevented from reversely flowing.SOLUTION: A needleless connector includes a structure in which a chemical solution flow path 14 is formed in a housing 12, an elastic valve 62 having a slit 64 is attached to an inlet port 16, the slit 64 of the elastic valve 62 is opened by inserting a male lure 94 into the inlet port 16 of the chemical solution flow path 14, and thus the chemical solution flow path 14 is switched from a disconnected state to a communication state. In the connector, an elastic body housing section 54 is formed on the housing 12, and a bag-like elastic body 70 is disposed on the elastic body housing section 54. With this configuration, the bag-like elastic body 70 is pushed by the male lure 94 pressed thereinto from the inlet port 16 to elastically deform it, thereby increasing the volume of the chemical solution flow path 14, and the male lure 94 is pulled out to restore the bag-like elastic body 70 into an original state, thereby decreasing the increased volume of the chemical solution flow path 14.COPYRIGHT: (C)2013,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が設けられていると共に、スリット64を有する弾性弁体62が入口16に装着されており、該薬液流路14の該入口16に雄ルアー94が挿し入れられることにより該弾性弁体62の該スリット64が開かれて該薬液流路14が遮断状態から連通状態に切り換えられ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
