An apparatus is provided to change the absolute humidity of a flow of air for delivery to an entrance of the airways of a patient, the change being compared to the absolute humidity of ambient air. The apparatus has a reservoir configured to hold a volume of liquid. A heating element creates vapour from the liquid. A chamber is provided to mix the flow of air with the vapour. The apparatus has a body having a first wall structure with a chamber inlet port. A closure element having an air inlet port for pneumatically connecting to a source of the flow of air is secured to the body to provide a sealed gas flow path between the air inlet port and the chamber inlet port, and a liquid trap in the gas flow path.

A modularized respiratory treatment apparatus provides various respiratory pressure treatments. The apparatus may be formed by discrete connectable modules such as a flow generator module, alarm module and/or humidifier module. Each module may include its own external casing or housing to independently retain or enclose the respective components that serve the function of the module. Different modules may be adapted with different components and functionalities and may be readily coupled using standardized gas and electrical connection configurations that have flow and communication paths that extend through the modules. When coupled, operation of the respiratory treatment apparatus may be controlled by detection of different modules, such as the alarm module that generates visual and/or audible alarms based on detected conditions, so as to selectively enable or disable different respiratory treatments. The discrete modules of the medical treatment apparatus may include tamper resistant locking mechanisms to impede unauthorized separation of some modules.

A patient interface for delivery of a supply of pressurised air or breathable gas to an entrance of a patient's airways comprising: a cushion member that includes a retaining structure and a seal-forming structure permanently connected to the retaining structure; a frame member attachable to the retaining structure; and a positioning and stabilising structure attachable to the frame member.

A patient interface for delivery of a supply of pressurised air or breathable gas to an entrance of a patient's airways comprising: a cushion member that includes a retaining structure and a seal-forming structure permanently connected to the retaining structure; a frame member attachable to the retaining structure; and a positioning and stabilising structure attachable to the frame member.

The disclosure relates to a breathing tube arrangement for a lung function diagnostics device, comprising a breathing tube defining a guiding path for breathing air to be analyzed by a lung function diagnostics device, the breathing tube having a proximal end, a distal end and an analysis zone located between the proximal end and the distal end. According to an aspect of the disclosure, the breathing tube arrangement comprises a filter element having a filter material, a breathing air releasing region arranged distally of the filter material, and a diffusor zone arranged proximally of the filter material, wherein the diffusor zone comprises a proximal end having a first proximal cross-sectional area and a distal end having a first distal cross-sectional area that is bigger than the first proximal cross-sectional area, and wherein the breathing air releasing region has a second distal cross-sectional area, wherein the second distal cross-sectional area is bigger than the first proximal cross-sectional area and at least as big as the first distal cross-sectional area, wherein a ratio between the first proximal cross-sectional area and the second distal cross-sectional area lies in a range of between 1:2 to 1:20.

A CPAP flow driver is adapted to split supplied breathable fluid into a first portion delivered to a venturi throat to generate a pressure drop to draw in ambient air to create a CPAP flow And a second portion that is delivered to a nebulizer to drive the nebulizer.

Provided are a humidification device and a humidification system, the humidification device includes a desorption structure, where the desorption structure includes a first housing, a heating layer and a desorption metal organic framework (MOF) portion; the first housing is provided with an air inlet and an air outlet; the heating layer is arranged in an inner side of the first housing; the desorption MOF portion is arranged inside the first housing and attached to the heating layer, where a temperature of the desorption MOF portion is adjusted based on a temperature of the heating layer, and the desorption MOF portion is of a preset moisture. The humidification device provided by the present disclosure can realize precise control on the humidity of the air, and have the properties of ease of use, high capacity, portability and low cost.

A portable oxygen concentrator designed for medical use where the sieve beds, adsorbers, are designed to be replaced by a patient. The concentrator is designed so that the beds are at least partially exposed to the outside of the system and can be easily released by a simple user-friendly mechanism. Replacement beds may be installed easily by patients, and all gas seals will function properly after installation.

A portable oxygen concentrator designed for medical use where the sieve beds, adsorbers, are designed to be replaced by a patient. The concentrator is designed so that the beds are at least partially exposed to the outside of the system and can be easily released by a simple user-friendly mechanism. Replacement beds may be installed easily by patients, and all gas seals will function properly after installation.

A novel oxygen pulse therapy methods of treating subjects suffering from COVID19 and other respiratory and others diseases are provided. Aspects of the methods including administering to the subjects an effective amount of oxygen as pulses through the respiratory tract are included. Also provided are methods of assessing severity of the disease, mild, moderate, severe, or critical, and oxygen doses and frequencies. The method can be applied to viral, bacterial, fungal or parasitic respiratory and others diseases infections such as corona virus (SARS-CoV-2), influenza virus such as influenza A or rotavirus, bacterial pneumonia and meningitis such as Streptococcus pneumonia or parasitic and other diseases such AIDS, Ebola, tuberculosis and malaria.