Air pressure switch and infusion pipe with switch

摘要: The invention discloses an air pressure switch and infusion pipe with the switch. is composed of a sealed container changeable volume, body insulating wire, wherein arranged in container, one end wire connected to body, other led out provided connecting port communicated inner cavity butt joint pipeline, turned off when pipeline normal or positive; negative, decreased, originally turned-off on after being squeezed. A formed front inlet filter pipe. Through cooperative use pipe, nurse automatically called liquid medicine finished.