Arrangement for intravenous administration or the like

摘要: The arrangement comprises a passageway for receiving liquid intravenous administration (IV) or the like. A hydrophilic microporous membrane having first pore size is disposed in at point so that all passes through said point. filter below to passing second has bubble high enough withstand expected head of it (the gravity IV set). Should from source as proceeds be exhausted, then when air gas reaches flow stopped because upper, acts an automatic shut-off valve. Air does not pass wet long pressure exceed its Accordingly there no danger arriving air-lock lower passageway. bellows drip chamber may arranged immediately and act chamber. further embodiment such adjacent membrane, branch section between which used application secondary auxiliary solution. In case, if solution higher than primary solution, will preferentially administered. There back-flow trapped lock prevent backward cannot upper by above it.