A combined exhaled air and environmental gas sensor apparatus for mobile respiratory equipment includes a housing, wherein the housing includes a port aperture, a connector configured to attach the port aperture to a respiratory exhaust port, and at least an ambient aperture connecting to an exterior environment, a sensor positioned within the housing, the sensor configured to detect a carbon dioxide level and generate sensor outputs indicating detected carbon dioxide level, a processor communicatively connected to the sensor, the processor including a memory, a breath analysis mode and an environmental analysis mode, wherein the processor is configured to receive a plurality of sensor outputs from the sensor, match the plurality of sensor outputs to mode parameter profile, and switch between the breath analysis mode and the environmental analysis mode as a function of the mode parameter profile.

The present invention describes an apparatus and method for determining the energy expenditure of a subject by indirect calorimetry where respiratory gases O.sub.2 and CO.sub.2 are captured in a tent mask coupled through a pneumotach flow meter to a vacuum inlet of a blower fan whose speed is controlled by a computer running a program that ensures that the bias flow being drawn through the mask always exceeds the subject's peak expiratory flow. VO.sub.2 and VCO.sub.2 and flow values are measured on a breath-by-breath basis and used in arriving at a bias flow adjustment voltage to be applied to the blower fan for adjusting its speed.

A multifunctional breath analyzer includes a receptor unit for receiving a breath sample from a test subject, a sensing unit providing a signal corresponding to the concentration of at least one volatile substance within the sample, elements for providing a signal indicative of the dilution of the breath sample, and an analyzing unit/processing unit for the identification and quantification of the volatile substance of the breath sample. The signal processing unit is configured to perform at least two different calculations for the quantification, and the signal processing unit is also configured to automatically display the result of a selected calculation, the selection being based on the signal indicating dilution.

Features for assessing patient compliance with therapeutic usage of an inhaler, such as a nebulizer, are disclosed. Nebulizer therapy accessories include mouthpiece, mask and adaptor (i.e. an attachment to a mouthpiece or mask) that may be coupled with the nebulizer. The nebulizer therapy accessory includes at least one sensor that detects a physical parameter generated by a user's body and generates a signal. The signal is used to determine therapy compliance, which may be communicated to the patient and/or the patient's physician.

The invention relates to a monitoring and/or respiratory assistance apparatus that can be used during a cardiopulmonary resuscitation (CPR) with successive chest compressions of duration (dt) performed on the patient and with relaxations, said apparatus comprising a CO.sub.2 content measurement sensor (10) a graphical user interface (14), and signal-processing system (11) configured to process the CO.sub.2 content measurement signals in such a way as to determine at least one maximum CO.sub.2 content value (Vmax) and at least one minimum CO.sub.2 content value (Vmin), during at least one duration (dt) of at least one chest contraction, and then to calculate at least one airway opening index AOI or mean index AOI.sub.mean on the basis of the CO.sub.2 content values. Said one or more indices are displayed on the GUI in the form of numerical values or graphical representations, especially curves or pictograms.

Medical devices can perform a plurality of functions, such as sensing, monitoring, deriving and/or calculating various physiological statuses of a patient (e.g., blood pressure, temperature, respiration rate, etc.). Medical devices can also be used to image part or all of a patient's body, to deliver a treatment, or to manage information related to a patient's care. The present disclosure is directed at one or more devices that perform these functions using a plurality of processing circuits, wherein each processing circuit has a timing circuit with a local clock. These processing circuits can be connected via a network, and each timing circuit can communicate with at least one other timing circuit in order to detect and correct time-differences between their local clocks. In this way, multiple processing circuits can be synchronized with each other to facilitate diagnosis or treatment of a patient's condition, or other aspects of a patient's care.

A nasal adaptor includes: an oral expiration guiding portion which has an opposing portion that is to be opposed to the mouth of a living body, and in which a mouth-side guide path that guides expiration that is expired from the mouth to the opposing portion is formed; and an attaching portion which is placed above the oral expiration guiding portion with respect to the living body, and to which a holding member that holds a sensor for measuring the expiration guided by the oral expiration guiding portion is attached. The oral expiration guiding portion is integrally connected to the attaching portion, and has positioning changing portions that change the distances between connecting portions connected to the attaching portion, and the opposing portion, thereby changing the positioning of the opposing portion.

The present invention relates to a new system for measuring, recording and monitoring the splanchnic tissue perfusion and the pulmonary physiological dead space in an automated way, both continuously and intermittently, and in real time, which is easy to manage and generates information easy to interpret. Said system comprises at least four measuring devices of medical parameters, connected to a device receiving, converting, storing, integrating, processing, and allowing the management and display of the data recorded in the measurements and the parameters estimated by the same. For this purpose, said device comprises a specific computer program of estimation of parameters related to the measurement of the splanchnic tissue perfusion and the pulmonary physiological dead space, from the data derived from the measuring devices. Likewise, the present invention is related to the use of a device for measuring, recording and monitoring of the splanchnic tissue perfusion and the pulmonary physiological dead space.

Immediately after airway placement and/or following any patient transfer, an automated program may be activated in a CO2 monitoring device to provide an airway device placement check. The automated program needs time to determine if the airway placement has been successful or not. During analysis of CO2 respiration data by the program, real-time feedback is displayed to the user as soon as the airway check program is activated until the time that a final decision on the success of airway placement is made. The real-time feedback displays one or more indicators of the progress of the program toward a determination of a successful or failed placement.

Disclosed are methods and devices for analyzing aerosol particles in exhaled breath using diagnostic tools that enable rapid, low cost and autonomous point of care assays for several diseases including respiratory tract diseases. Disclosed are methods and devices for capturing exhaled breath aerosols in a packed bed column and analyzing exhaled captured breath aerosols for tuberculosis diagnosis.