A system for monitoring the sobriety of a user is provided. The system may include a testing device that generates a substance content signal. The testing device may further include a mouthpiece and a user identification device. The user identification device may generate user identification data in response to a user’s breath and may transmit it from the testing device to a monitoring station. The testing device may further include at least one of an LCD screen or a light-emitting diode (“LED”) light. At least one of the LCD screen or the LED light may display at least one randomly generated visible identification indicia.

Embodiments herein include a method for detecting a brain condition in a subject. The method can include obtaining a breath sample from the subject and contacting it with a chemical sensor element, where the chemical sensor element includes a plurality of discrete graphene varactors. The method can include sensing and storing capacitance of the discrete graphene varactors to obtain a sample data set and classifying the sample data set into one or more preestablished brain condition classifications. Other embodiments are also included herein.

A system for monitoring the sobriety of a user is provided. The system may include a testing device that generates a substance content signal. The testing device may further include a mouthpiece and a user identification device. The user identification device may generate user identification data in response to a user's breath and may transmit it from the testing device to a monitoring station. The testing device may further include at least one of an LCD screen or a light-emitting diode (“LED”) light. At least one of the LCD screen or the LED light may display at least one randomly generated visible identification indicia.

Detection systems and methods of use thereof, and, in particular, hyperspectral fluorescence systems and methods for detecting aerosolized viral biologics and/or carcinogenic compounds or elements. The system utilizes, and the method is, a non-invasive, immediate, and non-biohazard byproduct method (with the actual imaging to determination generally occurring in less than 3 seconds) with a throughput of the station in around ten seconds (which is allowing for sanitization of the station before and after each individual is tested).

Methods and devices are provided for analyzing acetone in breath. One such method comprises disposing a reactant in a reaction zone within the breath analysis device, wherein the reactant comprises a primary amine disposed on a surface, and wherein the reaction zone has an optical characteristic that is at a reference level. It also comprises pre-storing a liquid nitroprusside solution within the breath analysis device separately from the reactant. The method further comprises using the breath analysis device to cause the breath to contact the reactant in the reaction zone so that the acetone in the breath reacts with the reactant to form a reaction product and, after the reaction product has been formed, using the breath analysis device to cause the nitroprusside solution to contact and react with the reaction product and to facilitate a change in the optical characteristic of the reaction zone relative to the reference level. The method also comprises using the breath analysis device to detect the change in the optical characteristic to sense the acetone in the breath. Apparatuses that use these methods are also described.

An airway status evaluation apparatus includes a respiration monitoring unit, a data processing unit, an inflation/deflation unit, and an inflation/deflation control unit. The data processing unit is electrically connected to the respiration monitoring unit, collects a respiration parameter of a patient from the respiration monitoring unit when a cuff meets an evaluation state, and evaluates an airway status of the patient according to the respiration parameter. The inflation/deflation control unit is connected to the inflation/deflation unit and controls the inflation/deflation unit to inflate and deflate the cuff so as to enable the cuff to meet an evaluation state. In the present disclosure, inflation and deflation of the cuff are implemented in a full-automatic or semi-automatic control manner, the respiration parameter can be automatically monitored, and the evaluation result is automatically calculated, thereby achieving the automatic evaluation for the airway status of a patient.

An elbow configured to connect to a positive pressure ventilation mask and to a ventilator circuit that provides a source of pressurized air. The elbow includes an access valve that opens to provide access to the mouth of the patient without removing the mask and seals from ventilator pressure pushing the valve to the closed position.

A system for remote transdermal alcohol monitoring includes and/or interfaces with a transdermal alcohol sensing device. Additionally or alternatively, the system can include and/or interface with any or all of: a user device; a supplementary alcohol sensing device; a set of supplementary sensors; a computing subsystem; a user interface; and/or any other components. A method for remote transdermal alcohol monitoring includes: receiving a set of inputs; determining a set of outputs; and triggering an action based on the set of outputs.

An airway adaptor providing a measurement chamber for gas measurement by a mainstream gas analyzer includes a body having a first end and a second end and configured to connect in a ventilation circuit carrying ventilation gas to and from a patient. The body forms a primary path that includes the measurement chamber and is configured to allow ventilation gas to pass between the first end and the second end and at least one secondary path separated from the primary path and located on an outer perimeter of the primary path. The at least one secondary path is configured to contain liquid away from the measurement chamber.

Disclosed herein is a device detecting volatile organic compounds, such as acetone, using nanostructured K.sub.2W.sub.7O.sub.22 crystals. Methods for detecting a subject in a state of ketosis, such as diabetes, using a volatile organic sensing device are disclosed. A method for synthesizing K.sub.2W.sub.7O.sub.22 nanostructured sensing crystals is further disclosed.