The invention relates to a male connector for use in a connector system for connecting conduits for fluid flow there between. The system comprises a male connector and a female connector and the connectors are releasably interengageable to form a fluid-tight connection. The male connector is adapted to connect only to a standard female slip Luer connector. The invention also relates to an infusion set including the male connector.本發明係關於一種公端連接器適用於一連接器系統,用於讓流體在連接之導管間流動,該系統包含一公端連接器以及一母端連接器,該些連接器可卸下地彼此接合以形成一流體密閉連接,該公端連接器設置以僅與一標準母端滑動Luer連接器連接。本發明也相關於一輸液器包含該公端連接器。2‧‧‧套管2a‧‧‧套管內表面2b‧‧‧套管外表面4‧‧‧突起7‧‧‧圓盤12‧‧‧氣體導管12a‧‧‧內部表面12b‧‧‧外部表面B‧‧‧阻礙件