Differential fluid parameter determination
AssigneeGambro AB
InventorsJames M. Brugger, George W. Buffaloe IV, Francis T. Ogawa
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Abstract
Methods and apparatuses for determining a fluid parameter in a vessel by altering a property of the fluid, sensing the difference in the property after the fluid is altered, particularly as related to the property in an unaltered portion of the fluid.
Claims27
A method for quantitatively determining a parameter of a fluid having a physical property, said fluid being disposed in a vessel into which flows a first portion of said fluid having a first value of said physical property, and out of which vessel flows a second portion of said fluid having a corresponding second value of said physical property, said method comprising:
- altering the first value of said physical property of the first portion of said fluid;
- measuring the difference between the first and second values of said physical property;
- and
- interpreting the difference between the first and second values of said physical property in a manner which provides for quantitatively determining a parameter of said fluid.
An apparatus for quantitatively determining a parameter of a fluid having a physical property, said fluid being disposed in a vessel into which flows a first portion of said fluid having a first value of said physical property, and out of which vessel flows a second portion of said fluid having a corresponding second value of said physical property, said apparatus comprising:
- means for altering the first value of said physical property of the first portion of said fluid;
- and
- means for measuring the difference between the first and second values of said physical property;
- and
- means for interpreting the difference between the first and second values of said physical property to quantitatively determine a parameter of said fluid.
Dependencies are inferred from the claim text.