A power supply device includes: a power supply circuit configured to supply power to a vital sensor; a capacitor electrically connected to the power supply circuit; a connector configured to supply power for charging the capacitor; and a shield case covering at least the power supply circuit and the capacitor to shield an electromagnetic wave.

Breath is used to detect the presence of absence of viruses or bacteria in a test subject. A series of devices can be used to collect a breath specimen. The breath specimen is either passed through a liquid or mixed with a liquid, the liquid capturing the viruses or bacteria contained in the breath. Alternatively, the breath specimen passes a filter medium, and the filter medium captures the viruses or bacteria contained in the breath. Liquid is then passed by the filter medium and collected. Liquids captured by these methods can then be tested by a laboratory, for instance using PCR techniques.

A rapid testing mechanism for respiratory viral pathogens includes a filter material positioned to capture exhaled breath particles from a respiratory tract. A portion of the filter material is impregnated with a pathogen binding adsorptive reagent. When the exhaled breath particles pass through the filter material the following occurs: when the binding adsorptive reagent reacts, a positive test for respiratory viral pathogens is indicated by the filter material; and when pathogen binding adsorptive reagent does not react, a negative test for respiratory viral pathogens is indicated by the filter material.

A device, system and method related to a pneumatic system for fluid analysis. The device, system and method comprise a connection interface for a fluid analyzer unit, a connection interface for a pump unit, a flow sensor and a pressure sensor. The device, system and method further comprises a control unit for calculating a pump stroke force or amplitude, and/or pump frequency based on measurements from the flow sensor and the pressure sensor for obtaining a constant flow through the pneumatic system.

In examples, there is a device for converting ammonia (NH.sub.3) in a human breath sample to nitric oxide (NO). The device comprises a tube and a heater. The tube comprises an inlet, an outlet, and a wall defining an internal surface of the tube and an external surface of the tube. The wall comprises substantially the same material along a thickness from the internal surface of the tube to the external surface of the tube. The material is catalytic for conversion of ammonia to nitric oxide. The heater is configured to heat the wall.

A signal processing system includes an expiratory information acquisition unit and a nerve recognition uni. The expiratory information acquisition unit acquires expiratory information as a piece of biometric information about a person's expiratory volume. The nerve recognition unit recognizes, based on a dispersion in the expiratory information, a condition of the person's autonomic nervous system.

Disclosed herein are a non-invasive alcohol detection, identity management, access control, remote screening, and reporting systems.

Provided herein are apparatuses, systems, kits, and methods, for detecting a virus contained within human breath or ambient air. The apparatus includes a housing comprising a base and a cover, the base having a sample collection surface, and the cover having a port and substantially enclosing the sample collection surface thereby defining a sample collection chamber. The apparatus includes a tube extending through the port and configured to receive a gaseous sample containing moisture and direct the gaseous sample to the sample collection surface. The apparatus includes a cooling device configured to cool the gaseous sample and thereby condense the moisture on the sample collection surface and a sample collection material disposed on the sample collection surface. The sample collection material is configured to absorb the condensed moisture.

A system and method of monitoring sobriety using a hand-held breath testing device that, on receipt of a user's breath, generates a breath test signal comprising substance content data and user identification data, and wirelessly transmits the breath test signal to a breath test signal receiving station.

An oral appliance for treating sleep apnea in a user includes a mouthpiece configured for being positioned in an oral cavity of the user, and at least one pulse oximeter attached to the mouthpiece. According to an aspect, the pulse oximeter is configured to monitor actual oxygen saturation levels of hemoglobin of the user when the oral appliance is positioned in the oral cavity of the user. The oral appliance may include an additional sensor attached to the mouthpiece that includes at least one of an airflow sensor, a pressure sensor, a noise detector, and an actigraphy sensor.