Multiple chamber container for delivering liquid under pressure Patent #: 4270533
ApplicationNo. 06/164105 filed on 06/30/1980
US Classes:604/28, Method604/123, From pump injection device604/151, Material impelled by pump604/155, With threaded drive means604/31, By self-acting means or condition responsive sensor604/507Therapeutic material introduced into or removed from vasculature
ExaminersPrimary: Yasko, John D.
Attorney, Agent or Firm
International ClassesA61M 5/148 (20060101)
A61M 5/145 (20060101)
AbstractA positive displacement intravenous infusion pump device and method are disclosed to precisely meter intravenous fluid to a patient. Intravenous fluid to be injected into the vein of a patient is placed in a closed rigid fluid container, and a variable (but fixed for each administration) quantity of incompressible material, stored in a separate receptacle, is introduced into the fluid container to cause displacement of fluid from the container to thereby inject the fluid into the vein of the patient. Introduction of incompressible material is controlled so that the intravenous fluid is injected in a controlled manner into the vein of the patient.