One kind exempting from needle connector mould group,Including exempt from needle nut,Feather valve and dosing cap； Exempting from needle nut includes that hollow eedle and medical fluid flow into pipe,Hollow eedle has an at least aperture for an inner passage and indirect communication inner passage； This exempts from needle nut feather valve setting what,And it includes upper valve portion and have gradient flexibility valve portion,Upper valve portion has opposite closed end and open end,And closed end offers slit； Dosing cap has an opening and a hollow cavity,And the profile of the corresponding flexible valve portion of in-profile of hollow cavity； When injection needle tube insertion opening and when squeezing feather valve,Flexible valve portion deflection deformation and hollow eedle in hollow cavity pass through slit,Aperture appears on what outside the closed end of valve portion,Communicate injection needle tube with aperture,Liquid in injection needle tube flows through hollow eedle and enters medical fluid and flow into pipe.一種免針連接頭模組，包括免針螺帽、彈性閥及加藥帽；免針螺帽包含中空針形件及藥液流入管，中空針形件具有一內部通道及間接連通內部通道之至少一開孔；彈性閥設置於該免針螺帽上，且其包含上閥部及具梯度之撓性閥部，上閥部具有相對之封閉端及開放端，且封閉端開設有狹縫；加藥帽具有一開口及一中空腔，且中空腔之內部輪廓對應撓性閥部之輪廓；當注射針筒插入開口並擠壓彈性閥時，撓性閥部在中空腔內撓曲變形且中空針形件穿過狹縫，開孔顯露於上閥部之封閉端外，使注射針筒與開孔相通，注射針筒內的液體流過中空針形件而進入藥液流入管。
