Analysis of gases
First Claim
1. A method comprising:
- using photoacoustic spectroscopy to determine data describing infrared absorption at a collection of wavelengths of a gas sample taken from an individual;
based on the data describing the infrared absorption, determining measurements of concentrations of a plurality of different non-aqueous species in the gas sample taken from the individual;
receiving, by a data processing device, the measurements of concentrations of the plurality of different non-aqueous species in the gas sample taken from the individual;
correlating, by the data processing device, the concentration measurements with a medical condition of the individual; and
making a result of the correlation available over an output device of the data processing device,wherein analysis information is used, by the data processing device, in conjunction with concentration measurement results to characterize a medical condition of the individual, the analysis information including generalized information, the generalized information reflecting a correlation between concentrations of the non-aqueous species in gas samples associated with a population of individuals and a medical condition of the population,wherein the concentrations of the non-aqueous species in gas samples is compared, by the data processing device, with the generalized information until sufficient gas samples have been taken and analyzed to assemble a statistically useful database of individualized information for a given individual, and comparing the concentrations of the non-aqueous species also with the individualized information once such a database has been assembled.
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Accused Products
Abstract
Systems and techniques for the analysis of gases for medical purposes are described. In one aspect, a system includes a sample collector to collect a physical sample associated with an individual and present a gas sample for analysis, a gas analysis device to analyze the gas sample presented by the sample collector to determine a concentration of one or more non-aqueous gases in the gas sample, a data storage device that includes information reflecting a correlation between concentration of the one or more non-aqueous gases in the gas sample and a disease state, and a data analysis device to determine a medical condition of the individual based on the concentration of one or more non-aqueous gases in the gas sample and the information.
21 Citations
22 Claims
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1. A method comprising:
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using photoacoustic spectroscopy to determine data describing infrared absorption at a collection of wavelengths of a gas sample taken from an individual; based on the data describing the infrared absorption, determining measurements of concentrations of a plurality of different non-aqueous species in the gas sample taken from the individual; receiving, by a data processing device, the measurements of concentrations of the plurality of different non-aqueous species in the gas sample taken from the individual; correlating, by the data processing device, the concentration measurements with a medical condition of the individual; and making a result of the correlation available over an output device of the data processing device, wherein analysis information is used, by the data processing device, in conjunction with concentration measurement results to characterize a medical condition of the individual, the analysis information including generalized information, the generalized information reflecting a correlation between concentrations of the non-aqueous species in gas samples associated with a population of individuals and a medical condition of the population, wherein the concentrations of the non-aqueous species in gas samples is compared, by the data processing device, with the generalized information until sufficient gas samples have been taken and analyzed to assemble a statistically useful database of individualized information for a given individual, and comparing the concentrations of the non-aqueous species also with the individualized information once such a database has been assembled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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measuring infrared absorption of a first gas sample associated with an individual using photoacoustic spectroscopy; receiving, by a data processing device, data representing the infrared absorption of the first gas sample associated with the individual; correlating, by the data processing device, the data representing the infrared absorption of the first gas sample with a medical condition of the individual based on generalized information reflecting a correlation between characteristics of gas samples associated with a population of individuals and a medical condition of the population; adding, by the data processing device, information describing the infrared absorption to a collection of individualized information reflecting a correlation between characteristics of gas samples associated with the individual and a medical condition of the individual; measuring infrared absorption of a second gas sample associated with the individual using photoacoustic spectroscopy; receiving, by the data processing device, data representing the infrared absorption of the second gas sample associated with the individual; and subsequently correlating, by the data processing device, the data representing the infrared absorption of the second gas sample with a medical condition of the individual based on the collection of individualized information, wherein analysis information is used, by the data processing device, in conjunction with concentration measurement results to characterize a medical condition of the individual, the analysis information including generalized information, the generalized information reflecting a correlation between concentrations of non-aqueous species in gas samples associated with a population of individuals and a medical condition of the population, wherein the concentrations of the non-aqueous species in gas samples is compared, by the data processing device, with the generalized information until sufficient gas samples have been taken and analyzed to assemble a statistically useful database of individualized information for a given individual, and comparing the concentrations of the non-aqueous species also with the individualized information once such a database has been assembled. - View Dependent Claims (13, 14, 15)
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16. A method implemented in a data processing system, comprising:
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using photoacoustic spectroscopy to determine data describing infrared absorption at a collection of wavelengths of a gas sample taken from an individual; based on the data describing the infrared absorption, determining measurements of concentrations of a non-aqueous species in the gas sample taken from the individual; receiving, by the a data processing system, the measurements of concentrations of the non-aqueous species in the gas sample taken from the individual; correlating, by the data processing system, the concentration measurements with a medical condition of the individual; and making a result of the correlation available over an output device of the data processing system, wherein analysis information is used in conjunction with concentration measurement results to characterize a medical condition of the individual, the analysis information including generalized information, the generalized information reflecting a correlation between concentrations of the non-aqueous species in gas samples associated with a population of individuals and a medical condition of the population, the method further comprising identifying, by the data processing system, a disease state of the individual based on the concentration of the non-aqueous species in the gas sample and the generalized information, wherein the concentrations concentration of the non-aqueous species in gas samples is compared with the generalized information until sufficient gas samples have been taken and analyzed to assemble a statistically useful database of individualized information for a given individual, and comparing the concentrations of the non-aqueous species also with the individualized information once such a database has been assembled. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification