pH BUFFER MEASUREMENT SYSTEM FOR HEMODIALYSIS SYSTEMS
First Claim
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1. A pH-buffer measurement system, comprising:
- at least one source for modifying the pH of a fluid entering the system, the source selected from an acid source and a base source wherein the acid source adds an acid equivalent to provide an acid reacted fluid and the base source adds a base equivalent to provide a base reacted fluid wherein the source is in fluid communication with a flow path; and
a component for determining a fluid characteristic of the acid reacted fluid or the base reacted fluid;
wherein the fluid characteristic that is measured is any one of a gas phase pressure, an electrical conductivity, or thermal conductivity.
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Abstract
A pH-buffer measurement system that has at least one source for modifying the pH of a fluid entering the system, the source selected from an acid source and a base source. The acid source adds an acid equivalent to provide an acid reacted fluid and the base source adds a base equivalent to provide a base reacted fluid. The source is in fluid communication with a flow path and a component for determining a fluid characteristic of the acid reacted fluid or the base reacted fluid. The fluid characteristic that is measured is any one of a gas phase pressure, an electrical conductivity, or thermal conductivity.
81 Citations
47 Claims
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1. A pH-buffer measurement system, comprising:
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at least one source for modifying the pH of a fluid entering the system, the source selected from an acid source and a base source wherein the acid source adds an acid equivalent to provide an acid reacted fluid and the base source adds a base equivalent to provide a base reacted fluid wherein the source is in fluid communication with a flow path; and a component for determining a fluid characteristic of the acid reacted fluid or the base reacted fluid;
wherein the fluid characteristic that is measured is any one of a gas phase pressure, an electrical conductivity, or thermal conductivity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method for determining a pH or buffer content of a fluid, comprising the step of:
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modifying the pH of the fluid by adding an acid equivalent to provide an acid reacted fluid or adding a base equivalent to provide a base reacted fluid; and determining at least one fluid characteristic of the acid reacted fluid or the base reacted fluid by taking a difference between a first value of the fluid characteristic and a second value of the fluid characteristic of the acid reacted fluid or the base reacted fluid. - View Dependent Claims (34, 35, 36, 37)
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38. A fluid therapy system comprising:
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a fluid flow path in fluid communication with a dialyzer, a sorbent regeneration unit, and a fluid characteristic management unit, the fluid characteristic management unit being positioned between the sorbent regeneration unit and the dialyzer along a fluid flow. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification