Disclosed are biofeedback methods and devices suitable for providing biofeedback useful for helping a user control an own breathing, for example, to help in inducing deep breathing, and such biofeedback devices further comprising a dispenser for dispensing an inhalable substance.

A capnography system includes a CO.sub.2 sensing system having a CO.sub.2 sensor configured to measure a CO.sub.2 concentration in exhaled breath of a subject, a processor configured to derive one or more breath related parameters based on the measured CO.sub.2 concentration, and a communication unit. The capnography system includes a tubing system configured to allow flow of respiratory gasses therethrough. The tubing system includes a connector configured to connect the tubing system to the CO.sub.2 sensing system and a communication component configured to provide an indication of a type of the tubing system to the communication unit. The communication unit is configured to transfer data to the processor based on the indication obtained from the communication component, and the processor is configured to change or suggest a change of an operation mode of the CO.sub.2 sensing system based on the data.

An inhalation system comprising an inhalation device and a flowmeter (12) that comprises a flow chamber (15), a resistor body (20) and a flow indicator (21), wherein said flow chamber (15) comprises an inlet opening (17) that can be connected to the surroundings, an outlet opening (18) that can be connected to an interior of the inhalation device, and a flow resistance device, said inhalation system being configured to guide supply air through the inlet opening (17) into the flow chamber (15), through the outlet opening (18) out of the flow chamber (15) and into the interior of the inhalation device, said resistor body (20) being configured to be able to assume different positions in the flow chamber (15), and said flow indicator (21) being configured to indicate a position of the resistor body (20) in the flow chamber (15).

The present system is directed in various embodiments to devices, systems and methods for detection, evaluation and/or monitoring olfactory dysfunction by measuring and determining the patient's olfactory detection threshold for the left and the right nostril. More specifically, the present invention relates to devices, systems and methods for detecting an asymmetric differential in a patient's olfactory detection threshold (left vs right nostril) which, when present, may be used as a device to detect, diagnose and/or monitor olfactory deterioration resulting from certain neurodegenerative disorders such as Alzheimer's disease.

The present invention provides a spacer device having a flow rate spirometer. The flow rate indicator allows users to use a measured, consistent flow rate leading to improved synchronicity and actuation.

Disclosed are biofeedback methods and devices suitable for providing biofeedback useful for helping a user control an own breathing, for example, to help in inducing deep breathing, and such biofeedback devices further comprising a dispenser for dispensing an inhalable substance.

A method for pulmonary testing includes, while a patient inspires through the testing device, injecting a test gas at a selected flowrate toward an open end of the testing device. The method also includes measuring a flow rate of the inspired gas, which comprises the test gas. The method further includes measuring a concentration of a selected test gas component in the inspired gas.

A method for pulmonary testing includes, while a patient inspires through the testing device, injecting a test gas at a selected flowrate toward an open end of the testing device. The method also includes measuring a flow rate of the inspired gas, which comprises the test gas. The method further includes measuring a concentration of a selected test gas component in the inspired gas.

A pump device, a respiratory device and a method for providing a respiratory gas. A specially formed rotor and a corresponding pump chamber are used so that an approximately sinusoidal flow of an out-flowing fluid is possible. With the combination of two pump chambers with rotors driven in a 180° phase-shifted manner to one another, an almost constant flow can be created at a common outlet. In addition, the system is designed to be highly dynamic with simultaneously relatively low energy consumption.

Disclosed are biofeedback methods and devices suitable for providing biofeedback useful for helping a user control an own breathing, for example, to help in inducing deep breathing, and such biofeedback devices further comprising a dispenser for dispensing an inflatable substance.