From compound dropping funnel subassembly of exhaust formula

The utility model discloses a from compound dropping funnel subassembly of exhaust formula, including last bi -pass, dropping funnel and bi -pass down, lower bi -pass is compound bi -pass down, and compound bi -pass down is including compound bi -pass oversheath down, compound bi -pass inner core down, and compound bi -pass down bonds in the exit of blowing dropping funnel lower part, and the lower pipe connection mouth on the compound bi -pass inner core down adopts the chamfer bevel design. The utility model discloses rely on the liquid surface tension and the adhesive force of bi -pass pipe wall down, stop in tiny bubble gets into the transfusion system downcomer along with the liquid medicine, eliminated the potential safety hazard that the bubble that exists led to the fact the patient in time infusion pipe, reduced doctors and patients' dispute, lightened nurse's intensity of labour greatly, saved operating time and medical resource.