Abstract: The present disclosure pertains to a portable handheld pressure support system configured to deliver a pressurized flow of breathable gas to the airway of a subject. The pressure support system is configured to treat COPD and/or other patients suffering from dyspnea and/or other conditions. The pressure support system is configured to be small and lightweight so that a subject may carry the system and use the system as needed without requiring a device to be worn on the face. The present disclosure contemplates that the portable handheld pressure support system may be used to treat symptoms and/or conditions related to dyspnea, and/or for other uses. In one embodiment, the system comprises one or more of a pressure generator, a subject interface, one or more sensors, one or more processors, a user interface, electronic storage, a portable power source, a housing, a handle, and/or other components.

Abstract: In certain embodiments, a system for providing respiratory therapy is provided. The system comprises a pressure generator for generating a pressurized flow of breathable gas; a subject interface for guiding the pressurized flow of breathable gas to a point of delivery at or near the airway of the subject, wherein the subject interface causes a pressure drop between an output of the pressure generator and the point of delivery; one or more sensors for generating output signals conveying information related to gas parameters of the pressurized flow of breathable gas; one or more processors configured to adjust one or more model parameters of a parameter-based model that models the subject interface; estimate the pressure drop between the output of the pressure generator and the point of delivery based on the adjusted model parameters; and adjust levels of the gas parameters based on the estimated pressure drop.

Abstract: Systems and methods for providing respiratory therapy overcome various effects of transport delay within tubing of a respiratory therapy device by virtue of estimating and compensating for, e.g., a pressure drop in such tubing.

Abstract: A respiratory interface apparatus (6) is provided that includes a patient contacting portion (21) structured to engage a face of the patient, a common chamber (30) fluidly coupled to the patient contacting portion (21), a first control chamber (26), a first flow regulating mechanism (32) provided between the first control chamber (26) and the common chamber (30), a second control chamber (28), and a second flow regulating mechanism (34) provided between the second control chamber (28) and the common chamber (30).

Abstract: An improved patient interface assembly and pressure support system integrate a pressure sensor and a valve into the patient interface assembly and employs closed loop control between the sensor and the valve in order to limit delay between the time at which a condition indicative of abnormal breathing or flow load during normal breathing is experienced by a patient and the time at which altered pressure support is received by the patient.

Abstract: Systems and methods to provide light therapy to a subject use one or more light sources configured to emit electromagnetic radiation in multiple stages using multiple wavelengths. By virtue of the emitted electromagnetic radiation impinging on the subject, the phase of the circadian rhythm of the subject is modified.

Abstract: Systems and methods to provide light therapy to a subject use a light source configured to emit pulses of electromagnetic radiation consisting substantially of blue light. By virtue of the emitted pulses of electromagnetic radiation within a particular range of wavelengths impinging on an eye or eyelid of the subject, the phase of the circadian rhythm of the subject is shifted. Such a shift may be accomplished in such a way that the level of melatonin production is not substantially suppressed.

Abstract: A pressure support system configured to provide pressure support therapy includes a humidifier that holds an enhanced amount of liquid while enhancing the power consumption of the pressure support system and enabling relatively rapid adjustments to humidity level. The humidifier includes a humidification chamber and a holding chamber, and a partition that divides the holding chamber from the humidification chamber such that liquid from the holding chamber replenishes liquid held in the humidification chamber. The partition, however, also provides a level of thermal isolation for the humidification chamber from the holding chamber.

Abstract: Systems and methods for providing respiratory therapy overcome various effects of transport delay within tubing of a respiratory therapy device by virtue of estimating and compensating for, e.g., a pressure drop in such tubing.

Abstract: The present disclosure pertains to a portable handheld pressure support system configured to deliver a pressurized flow of breathable gas to the airway of a subject. The pressure support system is configured to treat COPD and/or other patients suffering from dyspnea and/or other conditions. The pressure support system is configured to be small and lightweight so that a subject may carry the system and use the system as needed without requiring a device to be worn on the face. The present disclosure contemplates that the portable handheld pressure support system may be used to treat symptoms and/or conditions related to dyspnea, and/or for other uses. In one embodiment, the system comprises one or more of a pressure generator, a subject interface, one or more sensors, one or more processors, a user interface, electronic storage, a portable power source, a housing, a handle, and/or other components.

Abstract: An improved patient interface assembly and pressure support system integrate a pressure sensor and a valve into the patient interface assembly and employs closed loop control between the sensor and the valve in order to limit delay between the time at which a condition indicative of abnormal breathing or flow load during normal breathing is experienced by a patient and the time at which altered pressure support is received by the patient.

Abstract: A pressure support device configured to provide pressure support therapy includes a humidifier that holds an enhanced amount of liquid without significantly mitigating sensitivity of respiratory event detection. The humidifier includes a chamber configured to hold liquid, and a partition that divides the chamber such that the volume of the chamber through which a flow of gas generated by the pressure support device flows is reduced. The reduction in the volume of the chamber through which the flow of gas flows preserves respiratory event detection sensitivity.

Abstract: A respiratory interface apparatus (6) is provided that includes a patient contacting portion (21) structured to engage a face of the patient, a common chamber (30) fluidly coupled to the patient contacting portion (21), a first control chamber (26), a first flow regulating mechanism (32) provided between the first control chamber (26) and the common chamber (30), a second control chamber (28), and a second flow regulating mechanism (34) provided between the second control chamber (28) and the common chamber (30).

Abstract: A pressure support system configured to provide pressure support therapy includes a humidifier that holds an enhanced amount of liquid while enhancing the power consumption of the pressure support system and enabling relatively rapid adjustments to humidity level. The humidifier includes a humidification chamber and a holding chamber, and a partition that divides the holding chamber from the humidification chamber such that liquid from the holding chamber replenishes liquid held in the humidification chamber. The partition, however, also provides a level of thermal isolation for the humidification chamber from the holding chamber.