A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/90
A61M 5/14 (2006.01) A61M 5/165 (2006.01)
Patent
CA 1140018
NEH:em #3629 APPARATUS FOR CONTROLLABLY ADMINISTERING A PARENTERAL FLUID Abstract of the Disclosure An apparatus for administering parenteral liquids from a parenteral fluid container which provides a sufficient quantity of parenteral liquid to be admin- istered at a slower than normal rate so as to afford a keep-vein-open (KVO) means. The apparatus utilizes a conduit in a reservoir chamber with a single orifice or a series of continuous orifices in the conduit to provide an inlet means. The inlet means provides a faster flow rate through portions of the orifice proximate the upper end wall of the chamber than through portions remote therefrom. The preferred inlet means is covered by a filter and extends perpendicularly over a portion of the side wall of the chamber as well as over a portion of the end wall thereof. When the parenteral liquid is maintained in the reservoir in contact with the entire surface of the inlet, liquid will pass therethrough at a predetermined regular rate. When liquid no longer contacts the entire surface, as when the fluid container is gradually depleted of liquid, the liquid will then contact less area of the inlet surface to afford a slower rate of liquid until a new container can be supplied.
347353
Abbott Laboratories
Macrae & Co.
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