Portable unit for metabolic analysis
First Claim
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1. A portable unit for metabolic analysis of a test subject, comprising:
- a device configured to close the test subject'"'"'s nose and allow the test subject to only breath through the mouth;
a first pipe in air flow communication with the mouth of the test subject;
a first manifold portion and a second manifold portion both extending and both bifurcating from the first pipe;
a first bi-directional air flow path within the first pipe comprising inhalation air flow towards the mouth of the test subject and exhalation air flow from the mouth of the test subject;
a second and third bi-directional air flow path within the first and second manifold portions, respectively;
wherein during exhalation of the test subject, exhaust air travels from the mouth of the test subject unidiretionally through the first pipe along the first bi-directional air flow path and is bifurcated and travels unidirectionally through the first and second manifold portions along the second and third bi-directional air flow paths;
wherein during inhalation of the test subject, inhalation air travels towards the mouth of the test subject unidiretionally through the first and second manifold portions along the second and third bi-directional air flow paths and combines to flow unidirectionally through the first pipe along the first bi-directional air flow path;
a carbon dioxide sensor subsystem disposed in the first manifold portion;
an oxygen sensor subsystem disposed in the first manifold portion;
an airflow rate sensor disposed in the second manifold portion; and
a computer connected to the carbon dioxide sensor subsystem, the oxygen sensor subsystem, and the airflow rate sensor for receiving data signals from the carbon dioxide sensor subsystem, the oxygen sensor subsystem, and the airflow rate flow sensor and for digitizing the data signals and wirelessly conveying the digitized data to another computer which stores the digitized data for display and analysis.
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Abstract
The Portable Unit for Metabolic Analysis measures human metabolic function. The compact invention attaches to the face of a subject and it is able to record highly time-resolved measurements of air temperature and pressure, flow rates during inhalation and exhalation, and oxygen and carbon dioxide partial pressure. The device is capable of ‘breath-by-breath’ analysis and ‘within-breath’ analysis at high temporal resolution.
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Citations
20 Claims
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1. A portable unit for metabolic analysis of a test subject, comprising:
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a device configured to close the test subject'"'"'s nose and allow the test subject to only breath through the mouth; a first pipe in air flow communication with the mouth of the test subject; a first manifold portion and a second manifold portion both extending and both bifurcating from the first pipe; a first bi-directional air flow path within the first pipe comprising inhalation air flow towards the mouth of the test subject and exhalation air flow from the mouth of the test subject; a second and third bi-directional air flow path within the first and second manifold portions, respectively; wherein during exhalation of the test subject, exhaust air travels from the mouth of the test subject unidiretionally through the first pipe along the first bi-directional air flow path and is bifurcated and travels unidirectionally through the first and second manifold portions along the second and third bi-directional air flow paths; wherein during inhalation of the test subject, inhalation air travels towards the mouth of the test subject unidiretionally through the first and second manifold portions along the second and third bi-directional air flow paths and combines to flow unidirectionally through the first pipe along the first bi-directional air flow path; a carbon dioxide sensor subsystem disposed in the first manifold portion; an oxygen sensor subsystem disposed in the first manifold portion; an airflow rate sensor disposed in the second manifold portion; and a computer connected to the carbon dioxide sensor subsystem, the oxygen sensor subsystem, and the airflow rate sensor for receiving data signals from the carbon dioxide sensor subsystem, the oxygen sensor subsystem, and the airflow rate flow sensor and for digitizing the data signals and wirelessly conveying the digitized data to another computer which stores the digitized data for display and analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification