Sampling of breath gas
AssigneeInternational Business Machines Corporation
InventorsAkihiro Horibe, Kuniaki Sueoka, Toru Aihara
Life of this patent
Estimating the term…
Abstract
A method for sampling breath gas, includes collecting a first breath sample in a first bag. The first breath sample is an initial part of expired gas expired after inspiration. Additionally, the method includes collecting a second breath sample in a second bag. The second breath sample is a latter part of the expired gas. The method includes subtracting first mass spectral data obtained by mass spectroscopy of the first breath sample collected in the first bag from second mass spectral data obtained by mass spectroscopy of the second breath sample collected in the second bag.
Claims20
A method for sampling breath gas, the method comprising:
- collecting a first breath sample in a first bag, the first breath sample being an initial part of expired gas expired after inspiration;
- collecting a second breath sample in a second bag, the second breath sample being a latter part of the expired gas;
- and
- subtracting first mass spectral data from second mass spectral data, the first mass spectral data being obtained by mass spectroscopy of the first breath sample collected in the first bag, the second mass spectral data being obtained by mass spectroscopy of the second breath sample collected in the second bag.
An apparatus for sampling breath gas, the apparatus comprising:
- a first bag;
- a second bag;
- and
- a controller for controlling a first breath sample to flow in the first bag and controlling a second breath sample to flow in the second bag so that first mass spectral data is subtracted from second mass spectral data, the first breath sample being an initial part of expired gas expired after inspiration, the second breath sample being a latter part of the expired gas, the first mass spectral data being obtained by mass spectroscopy of the first breath sample in the first bag, the second mass spectral data being obtained by mass spectroscopy of the second breath sample in the second bag.
A system for analyzing breath gas, the system comprising:
- a bag unit which includes a first bag and a second bag, the first bag being a bag in which a first breath sample is collected, the first breath sample being an initial part of expired gas expired after inspiration, the second bag being a bag in which a second breath sample is collected, the second breath sample being a latter part of the expired gas;
- a mass spectrometer which obtains first mass spectral data and second mass spectral data, the first mass spectral data being obtained by mass spectroscopy of the first breath sample collected in the first bag, the second mass spectral data being obtained by mass spectroscopy of the second breath sample collected in the second bag;
- and
- a data processor which subtracts the first mass spectral data from the second mass spectral data.
Dependencies are inferred from the claim text.