A portable oxygen generating system is provided that comprises a reaction chamber, a feed system for providing and controlling hydrogen peroxide solution to the reaction chamber, and a cooling/condensing system for cooling the hot oxygen and water vapor leaving the reactor and condensing and removing water. The portable chemical oxygen generation system produces humidified, breathable oxygen, that is substantially free of hydrogen peroxide and other contaminants, at a controlled flow and temperature over an extended period of time.

Apparatus for treatment of obstructive sleep apnea includes a CPAP device and a detachable humidifier. The humidifier includes a tank that is removably insertable into a humidifier base. A sealed air flow path from the CPAP device and through the water tank is established when the water tank is placed in the humidifier base.

A sterilization germ killing comfort mask, including mask layers held in the mask with a fixed belt. There is a sterilization filter layer, an electrostatic layer, a far-infrared superfine calcium layer, and a facial protection layer from outside to inside of mask body. In use, the outside air passes through a first sterilization filter layer, the preliminary filtration sterilization filter layer removes larger grains of dust and sterilization, electrostatic layer can filter through the sterilization of dust. Superfine calcium far-infrared layer removes acidic dust, bacteria and oily molecular adsorption, and neutralize the acid molecules, sterilization and decomposition of oily molecules absorbed. Facial protection layer strengthen filtering and protection of facial skin. This mask for the various molecules in air dust filtration and sterilization, sterilization dust removal ability, remove the inclusion of peculiar smell in the air at the same time, guarantee the quality of air that users breathe, and the user to wear comfortable, strong practicability.

A CPAP device for delivering pressurized, humidified breathable gas for a patient includes a flow generator configured to pressurize a flow of breathable gas. The flow generator includes an air outlet and a removable water container configured to humidify the pressurized breathable gas received from the flow generator. The water container includes an air inlet and an air outlet. The CPAP device further includes a first elastomeric face seal configured to sealingly abut against a substantially flat portion of the water container surrounding the water container air inlet, the first elastomeric face seal being located at an intermediate position between the flow generator air outlet and the water container air inlet when the water container is placed into position to pneumatically communicate with the flow generator. In addition, the CPAP device includes a second elastomeric face seal, a portion of which is configured to sealingly abut against a substantially flat external surface portion of the water container surrounding the water container air outlet.

A personal alert safety system comprises a housing adapted to be worn by a user. An accelerometer is in the housing. An alarm device is operatively associated with the housing. A control in the housing is operatively connected to the accelerometer and the alarm device. The control is configured to operate the alarm device responsive to select acceleration movement of the housing sensed by the accelerometer.

A respirator system having a vortex tube with an arcuate hot leg. A respirator helmet has an inlet hose. A vortex tube with an arcuate hot leg and an inlet port is coupled to the respirator helmet. A compressed air source is coupled to the inlet port to supply air to the vortex tube in the range of 110 liter/minute (l/min) to 425 l/min and in the range of 40 pounds per square inch (psi) and 80 psi. This portable arrangement provides effective temperature control within the respirator system.

An environment control system utilizes oxygen and humidity control devices that are coupled with an enclosure to independently control the oxygen concentration and the humidity level within the enclosure. An oxygen depletion device may be an oxygen depletion electrolyzer cell that reacts with oxygen within the cell and produces water through electrochemical reactions. A desiccating device may be g, a dehumidification electrolyzer cell, a desiccator, a membrane desiccator or a condenser. A controller may control the amount of voltage and/or current provided to the oxygen depletion electrolyzer cell and therefore the rate of oxygen reduction and may control the amount of voltage and/or current provided to the dehumidification electrolyzer cell and therefore the rate of humidity reduction. The oxygen level may be determined by the measurement of voltage and a limiting current of the oxygen depletion electrolyzer cell. The enclosure may be a food or artifact enclosure.

This disclosure relates to a regenerable, heat-abating, humidity-neutralizing, carbon dioxide removal system for a self-contained breathing apparatus. The self-contained breathing apparatus can include a carbon dioxide removal unit that scrubs carbon dioxide out of exhaled air from a user to provide humidified, scrubbed exhaled air. The self-contained breathing apparatus can further include a heat and humidity removal unit that is configured to receive the humidified, scrubbed exhaled air, and is configured to remove water vapor and heat associated with the water vapor from the humidified, scrubbed exhaled air in order to provide cooled, dehumidified inhalation air. The cooled, dehumidified air can be supplemented with oxygen and returned to the user at a comfortable temperature. In some implementations, the heat and humidity removal unit can replace conventional heat exchange and energy storage units, including heat exchange and energy storage units that use phase change materials.

A self-contained re-humidification mask (1) having locating means (6) to enable the mask to be supported in an operative position on a user (4) is provided. The mask has a wall (2) shaped as a moulded domed mask configured to cover the face of a user from the nose to the chin. An endless peripheral edge is shaped and configured to generally anatomically follow the contours of a face of a user to define, with the face of a user, an air pocket (24). The mask has a single inlet-outlet aperture (8) located generally opposite a position occupied in use by a mouth of a user, and at least one re-humidification assembly (9) located in the inlet-outlet aperture such that it substantially fills the aperture. The re-humidification assembly includes a coil (17) of corrugated hygroscopic paper having an axis of the coil extending in the direction of fluid flow through the inlet-outlet aperture. The re-humidification mask preferably has a wall formed from a non-woven synthetic fibre sheet that is press moulded and heat set to the domed shape thereof.

A CPAP device for delivering pressurized, humidified breathable gas for a patient includes a flow generator configured to pressurize a flow of breathable gas. The flow generator includes an air outlet and a removable water container configured to humidify the pressurized breathable gas received from the flow generator. The water container includes an air inlet and an air outlet. The CPAP device further includes a first elastomeric face seal configured to sealingly abut against a substantially flat portion of the water container surrounding the water container air inlet, the first elastomeric face seal being located at an intermediate position between the flow generator air outlet and the water container air inlet when the water container is placed into position to pneumatically communicate with the flow generator. In addition, the CPAP device includes a second elastomeric face seal, a portion of which is configured to sealingly abut against a substantially flat external surface portion of the water container surrounding the water container air outlet.