A spirometer includes a housing, a mouthpiece coupled to the housing, and a measurement unit. The measurement unit is configured to receive air expelled by a user, and generate an electrical quantity corresponding to a peak expiratory flow or a forced expiratory volume based on the expelled air. The spirometer also includes a processing module supported by the housing, and configured to receive the electrical quantity from the measurement unit, a display coupled to the measurement unit to display an indication of the peak expiratory flow or the forced expiratory volume, and an energy harvester. The energy harvester is coupled to the measurement unit and the processing module, and is configured to receive energy from one of a group consisting of the measurement unit and an energy sensor, store the received energy in an energy storage device, and transfer the energy to the processing module.

A spirometer includes a housing, a mouthpiece coupled to the housing, and a measurement unit. The measurement unit is configured to receive air expelled by a user, and generate an electrical quantity corresponding to a peak expiratory flow or a forced expiratory volume based on the expelled air. The spirometer also includes a processing module supported by the housing, and configured to receive the electrical quantity from the measurement unit, a display coupled to the measurement unit to display an indication of the peak expiratory flow or the forced expiratory volume, and an energy harvester. The energy harvester is coupled to the measurement unit and the processing module, and is configured to receive energy from one of a group consisting of the measurement unit and an energy sensor, store the received energy in an energy storage device, and transfer the energy to the processing module.

A device for delivering medication to a user may include a circular or elliptical body that include a mouthpiece, a flexible strip of medication, a lever, and a mouthpiece cover, where the mouthpiece cover is rotatable about the body. The electronics module may include a communication circuit, a sensor system, and a switch. The lever may be configured to actuate the switch when the lever is moved from a closed position to an open position. The lever is configured to advance a dose of medication on the flexible strip when moved from the closed position to the open position. When actuated, the switch may be configured to switch the electronics module from an off state to an active state wen the lever is actuated for a first time by a user. Thereafter, the electronics module is configured to not return to the off state.

A device for delivering medication to a user may include a circular or elliptical body that include a mouthpiece, a flexible strip of medication, a lever, and a mouthpiece cover, where the mouthpiece cover is rotatable about the body. The electronics module may include a communication circuit, a sensor system, and a switch. The lever may be configured to actuate the switch when the lever is moved from a closed position to an open position. The lever is configured to advance a dose of medication on the flexible strip when moved from the closed position to the open position. When actuated, the switch may be configured to switch the electronics module from an off state to an active state wen the lever is actuated for a first time by a user. Thereafter, the electronics module is configured to not return to the off state.

A modular breath tracking and training system having a primary housing with an interactive airway chamber with an airflow responsive element in the airflow path of the chamber with at least one sensor element positioned to detect signals from the airflow responsive element with the primary housing being removably coupled to at least one respiratory orifice interface and operable to direct air between at least one respiratory orifice and the interactive airway chamber of the primary housing during use wherein a user may be guided to perform one or more breathwork exercises through one or more feedback devices.

A modular breath tracking and training system having a primary housing with an interactive airway chamber with an airflow responsive element in the airflow path of the chamber with at least one sensor element positioned to detect signals from the airflow responsive element with the primary housing being removably coupled to at least one respiratory orifice interface and operable to direct air between at least one respiratory orifice and the interactive airway chamber of the primary housing during use wherein a user may be guided to perform one or more breathwork exercises through one or more feedback devices.