Microfabricated staged preconcentration and parallel column for gas chromatography

    公开(公告)号:US10295511B2

    公开(公告)日:2019-05-21

    申请号:US15380064

    申请日:2016-12-15

    摘要: We disclose a microfabricated device for both extracting and preconcentrating samples for gas chromatography analysis. The device includes a conduit with at least two sections and multiple ports which may be connected to multiple gas chromatography columns. The inner surface of the conduit may be coated with multiple sorbents which bind volatile analytes with different affinities. The sections of the conduit may be divided by a thermal barrier which inhibits heat transfer between sections. Consequently, each section may be independently heated to encourage desorption of volatile analytes. The disclosed device separates and concentrates volatile analytes into different pools according to their chemical and physical properties before they enter a gas chromatography column that is optimized for that pool. The device reduces the amount of heat and time needed to perform gas chromatography analysis as well as avoids the need for purified gas sources typically used for the moving phase.

    Toilet with air sampling exhaust
    5.
    发明授权

    公开(公告)号:US10060111B2

    公开(公告)日:2018-08-28

    申请号:US15338861

    申请日:2016-10-31

    摘要: The present invention is directed to a device that measures volatile organic compounds (VOCs) emitted by an individual's urine, feces or present in flatulence for use in assessing the individual's health. The device may be part of a toilet. The device includes a gas sensor that measures VOCs in the air within the toilet bowl after waste is deposited therein. The device includes a manifold that keeps air from the toilet bowl separate from water and waste in the toilet bowl until the gas sensor has collected readings. Then the manifold combines the air, water, and waste before depositing the material into the sewer system. The gas sensor may be connected to a processor that analyses the gas sensor readings, provides a report of the analyzed data, and transmits the data to a network. A healthcare provider may download the data from the network to assess the individual's health.

    Microfabricated Staged Preconcentration and Parallel Column for Gas Chromatography

    公开(公告)号:US20180172646A1

    公开(公告)日:2018-06-21

    申请号:US15380064

    申请日:2016-12-15

    IPC分类号: G01N30/14

    摘要: We disclose a microfabricated device for both extracting and preconcentrating samples for gas chromatography analysis. The device includes a conduit with at least two sections and multiple ports which may be connected to multiple gas chromatography columns. The inner surface of the conduit may be coated with multiple sorbents which bind volatile analytes with different affinities. The sections of the conduit may be divided by a thermal barrier which inhibits heat transfer between sections. Consequently, each section may be independently heated to encourage desorption of volatile analytes. The disclosed device separates and concentrates volatile analytes into different pools according to their chemical and physical properties before they enter a gas chromatography column that is optimized for that pool. The device reduces the amount of heat and time needed to perform gas chromatography analysis as well as avoids the need for purified gas sources typically used for the moving phase.

    Medical toilet with user customized health metric validation system

    公开(公告)号:US10441252B2

    公开(公告)日:2019-10-15

    申请号:US15360101

    申请日:2016-11-23

    摘要: We disclose a medical toilet that includes a system for interpreting measurements collected by medical devices on or in the medical toilet and for customizing the measurements to each user. The system may use information about the user to selecting which measurements to perform, select or modify parameters that apply to the measurement techniques, and select follow-up measurements that may be performed based on the first set of measurements. These decisions may be made according to the user's physical, demographic, or medical status information that may be entered into a controller connected to the medical toilet. The controller may apply a set of rules to the measurements and thereby determine a value which provides an estimate of the validity of the measurements and which may be used to make adjustments to subsequent measurements.