One kind exempting from needle connector mould group (two),To connect an injection needle tube and a guide wire,Including one exempt from needle nut,One feather valve and a dosing cap； Exempt from needle nut and include a partition and a coaming plate,One medical fluid of a surface forming of partition flows into pipe,A cavity is formed with inside feather valve,Feather valve is provided with a counterflow-preventing valve body,The top of feather valve offers a slit,Dosing cap sleeve is set what feather valve and is mutually assembled with needle nut is exempted from,Dosing cap has the opening and hollow cavity being inserted into for injection needle tube； When injection needle tube insertion opening and when squeezing feather valve,The deflection deformation in hollow cavity of the top of feather valve,Injection needle tube, which supports, pastes and struts the slit,Penetration by liquid gravity in the injection needle tube is entered in the guide wire by the counterflow-preventing valve body.一種免針連接頭模組(二)，用以連接一注射針筒及一導引管，包括一免針螺帽、一彈性閥及一加藥帽；免針螺帽包含一隔板及一圍板，隔板的一表面成型一藥液流入管，彈性閥內部形成有一容腔，彈性閥設置有一防逆流閥體，彈性閥之頂部開設有一狹縫，加藥帽套置於彈性閥且與免針螺帽相互組接，加藥帽具有供注射針筒插入的開口及中空腔；當注射針筒插入開口並擠壓彈性閥時，彈性閥之頂部在中空腔內撓曲變形，注射針筒抵貼並撐開該狹縫，所述注射針筒內的液體透過重力通過該防逆流閥體而進入所述導引管內。
