A kind of precision filter infusion set,Include: a dropping funnel,The dropping funnel covers unification hollow cylinder by a upper cover and is composed,The upper cover projection has a conveying tube head,The first end of the delivery pipe links a perfusion tube with what,The other end of the conveying tube head then enables the liquid in the perfusion tube flow out； The hollow cylinder accommodates the liquid that the perfusion tube is oozed with what,And downward one output shaft hole of projection in bottom of the hollow cylinder,The output shaft hole links another perfusion tube with what,The liquid in the dropping funnel is exported by the perfusion tube that the output shaft hole links to syringe needle； One crosses filter infusion apparatus,It is in shell that this, which crosses filter infusion apparatus,In-between position is equipped with a chamber film,To cross in filter infusion apparatus and be separated out two chambers at this,And the one side for crossing filter infusion apparatus forms several exhaust gas filter holes,Wherein it is poor to form a distance for the exhaust gas filter hole and the bottom for crossing filter infusion apparatus,And the another side for crossing filter infusion apparatus then forms a screen pipe,This is crossed in the filter infusion apparatus position what hollow cylinder,The screen pipe and the output shaft hole for linking the dropping funnel bottom end； So that the extra air in the dropping funnel is discharged to the external world from the exhaust gas filter hole via the chamber film upper end,Reach need not move through manual operation can self-bleeding state.一種精密過濾輸液器，包含：一滴斗，該滴斗由一上蓋套合一中空柱體組合而成，該上蓋突伸有一輸送管頭，該輸送管頭一端用於連結一輸液管，該輸送管頭的另一端則令該輸液管內的液體流出；該中空柱體用於容置該輸液管所滴出的液體，且該中空柱體的底部向下突伸一輸出軸孔，該輸出軸孔用於連結另一輸液管，已將該滴斗內的液體藉由該輸出軸孔連結的輸液管輸出至針頭處；一過濾輸液器，該過濾輸液器呈殼體，其中間部位設有一腔膜，以在該過濾輸液器內隔出兩腔室，且該過濾輸液器的一面形成數個排氣過濾孔，其中該排氣過濾孔與該過濾輸液器的底部形成一段距離差，而該過濾輸液器的另一面則形成一過濾管，該過濾輸液器位於該中空柱體內，該過濾管並連結該滴斗底端的該輸出軸孔；使得該滴斗內的多餘的空氣經由該腔膜上端從該排氣過濾孔排出到外界，達到不需要經過人為操作即可自動
