Patent ID: 6558346
Filing Date: 2003-05-06
Classification: A61M

Abstract:
A portable intravenous infusion apparatus comprising: an infusion liquid container; an infusion liquid tube communicating with said infusion liquid container, said infusion liquid tube being provided with an air vent means immediately under said infusion liquid container; an infusion needle mounted to a tip end of said infusion liquid tube; and a means for applying a substantially constant pressure to said infusion liquid container, wherein said pressure-applying means comprises (a) a pressurizing bag inflatable by charging air; (b) a sheet member having each side end fixed to each side end of said pressurizing bag, a width of said sheet member being slightly larger than a lateral width of said pressurizing bag in a deflated state; (c) an air tube communicating with said pressurizing bag; (d) an air-supplying means mounted to said air tube; (e) and a safety valve mounted to said air tube, wherein said infusion liquid container is disposed in a space between said pressurizing bag and said sheet member, and wherein said pressurizing bag is inflated by the introduction of air by said air-supplying means, whereby a substantially constant pressure is applied to said infusion liquid container to cause an infusion liquid to flow therefrom.