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Flow regulation device for breath analysis and related method

  • US 10,226,201 B2
  • Filed: 10/31/2016
  • Issued: 03/12/2019
  • Est. Priority Date: 10/29/2015
  • Status: Active Grant
First Claim
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1. A breath analyte capture and analysis system for determining a concentration of an analyte in a breath sample from a user, comprising:

  • a cartridge having a chamber containing an interactant material;

    a mouthpiece device configured to receive and fluidly connect to the cartridge, the mouthpiece device configured to enable the user to exhale a portion of the breath sample through the chamber such that the portion passes through the interactant material under an exhalation force created by the user, causing the interactant material to absorb the analyte, the mouthpiece device comprising;

    an influent flow port into which the user exhales the breath sample;

    a first flow path coupled to the influent flow port, the first flow path extending into the chamber when the cartridge is positioned in the mouthpiece device;

    a second flow path coupled to the influent flow port; and

    a valve that is manually switchable by the user, by application of a depressive force by the user, between a first orientation in which breath entering the influent port travels through the second flow path and a second orientation in which breath entering the influent port travels through the first flow path, the valve enabling the user to manually route the portion of the breath sample exhaled into the mouthpiece device through the chamber of the cartridge to cause the portion to be exposed to the interactant material; and

    a base unit configured to receive and analyze the cartridge after the portion of the breath sample has been routed through the chamber of the cartridge using the mouthpiece device, the base unit comprising a sensor that senses the concentration of the analyte in the portion of the breath sample, wherein the base unit is physically separate from the mouthpiece device such that the user can exhale the portion of the breath sample into the mouthpiece device and cartridge at a location that is remote from the base unit.

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