In some embodiments, the medical fluid connector is configured to receive the emitter of the emitted therapeutic agent into a fluid path within the connector, wherein the medical fluid connector includes a proximal female end, an intermediate region, , A distal male end and a fluid path extending from the proximal female end through the intermediate region to the distal male end. The retaining structure is positioned within the intermediate region. The retaining structure is configured to transport the fluid traveling longitudinally through the fluid pathway directly into the proximal region of the emitter, to cause one or more sides of the emitter to go around and direct the fluid towards the distal male end Are configured to firmly receive the emitters of one or more therapeutic agents at the location and orientation at which the pathway is configured.いくつかの実施形態では、医療用流体コネクタは、放出される治療薬のエミッタをコネクタ内の流体経路に受け入れるように構成され、医療用流体コネクタは、近位側雌端部と、中間領域と、遠位側雄端部と、近位側雌端部から中間領域を通って遠位側雄端部まで延在する流体経路とを備える。保定構造が中間領域内に位置付けられる。保定構造は、流体経路を通って長手方向で移動する流体を直接エミッタの近位側領域内へ搬送し、エミッタの1つ以上の側面を巡らせ、遠位側雄端部へと向けるように流体経路が構成される位置および配向で、1つ以上の治療薬のエミッタをしっかりと受け入れるように構成される。
