Flow indicators for ambulatory infusion

The present invention relates generally to flow indicators for intravenous infusion devices. An intravenous infusion flow indicator including a housing defining an infusion liquid inlet and an infusion liquid outlet, a hydrophilic membrane disposed in the housing and being operative, when wetted, for permitting liquid flow and preventing air flow therethrough to the liquid outlet, wherein the liquid flow may be observed as droplets, the housing defining at least one volume, whose size and configuration are selected such that irrespective of the orientation of the housing following priming, infusion liquid within the housing is always in touching relationship with the membrane, thereby permitting continued infusion liquid flow therethrough.