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US 7,611,667 B2Granted
Apparatus for controlling the concentration of a sterilant chemical in a fluid
AssigneeSTERIS Inc.
InventorMichael A. Centanni
Life of this patent
Estimating the term…
Abstract
A sterilization system that includes a sensor for determining the concentration of a liquid sterilant in a sterilant fluid. The sterilant fluid is comprised of a blend of sterilant fluids from a plurality of sterilant supplies. The concentration of the liquid sterilant differs in each of the sterilant supplies. The sensor allows a controllable concentration of liquid sterilant to be supplied to a vaporizer.
Claims11
A decontamination system comprising:
- a first source of a first liquid sterilant including a sterilant chemical at a first concentration;
- a second source of a second liquid sterilant including said sterilant chemical at a second concentration;
- first regulating means for regulating a flow rate of the first liquid sterilant;
- second regulating means for regulating a flow rate of the second liquid sterilant;
- a controller including a data storage device for storing a plurality of data values indicative of an electrical property of a first sensor when exposed to a plurality of known concentrations of the sterilant chemical, wherein said controller is programmed to:
- control said first and second regulating means to produce a blended liquid sterilant comprised of the first and second liquid sterilant;
- determine the concentration of the sterilant chemical in the blended liquid sterilant by use of:
- (a) a signal generated by the first sensor when exposed to the blended liquid sterilant, and
- (b) the plurality of data values stored in the data storage device;
- and
- control the first and second regulating means to produce a blended liquid sterilant having the sterilant chemical at a desired concentration;
- a vaporizer for vaporizing said blended liquid sterilant having the sterilant chemical at the desired concentration to produce a vaporized sterilant;
- and
- a chamber for receiving said vaporized sterilant.
11 more elements
Dependencies are inferred from the claim text.