PROBLEM TO BE SOLVED: To provide a female connector, a male connector, a connection structure, a liquid feed circuit including the female connector, and a medical container including the male connector, allowing reduction of cost, improvement of connection operability between the female connector and the male connector, and improvement of connection workability of a liquid feed tube to the female connector, without impairing liquid tightness.SOLUTION: This female connector 125 has a stair structure where a surface of an engagement wall 517 facing an engagement claw 124 in a state that the female connector 125 is connected to the male connector 120 includes a first inclined surface 522b, a second inclined surface 522a, and a first step difference surface 522c continuing to the first inclined surface and the second inclined surface. The engagement claw 124 includes a third inclined surface 124b facing the first inclined surface, a fourth inclined surface 124a facing the second inclined surface, and a second step difference surface 124c facing the first step difference surface, in a state that the female connector is connected to the male connector.COPYRIGHT: (C)2013,JPO&INPIT【課題】液密性を損なうことなく、コスト低減、メス型コネクタとオス型コネクタとの接続操作性の向上、および、メス型コネクタへの送液チューブの接続作業性の向上を可能とする、メス型コネクタ、オス型コネクタ、接続構造、メス型コネクタを含む送液回路、およびオス型コネクタを含む医療用容器を提供する。【解決手段】メス型コネクタ125は、メス型コネクタ125がオス型コネクタ120に接続された状態で係合壁517の係合爪124に面する面が、第1傾斜面522bと、第2傾斜面522aと、第1傾斜面と第2傾斜面との間において両者に連続する第1段差面522cと、を含む階段構造をしており、係合爪124は、メス型コネクタがオス型コネクタに接続された状態で、第1傾斜面に対向する第3傾斜面124bと、第2傾斜面に対向する第4傾斜面124aと、第1段差面に対向する第2段差面124cとを含む。【選択図】図22A
