In some examples, a dual mode respirator comprises a face piece; an inhalation port; an exhalation port; and a port closure movable to close the exhalation port and switch the dual mode respirator from a source control mode to a free exhalation mode of the dual mode respirator.

A facial mask having pathogen inactivation capabilities is disclosed. One embodiment comprises a mask and a pathogen inactivation system coupled to the mask. The pathogen inactivation system is configured to heat and inactivate bacteria and viruses.

A protective helmet, such as an antivirus helmet with a viewing window completely encloses the user's head. The entire helmet is airtight except for an air inlet and air outlet on its side wall. In order to prevent the viewing window from fogging by the user's exhaled gas, the window is made of sandwich glass with central heater wire to warm the glass. The air needed for the user to breathe is supplied by an external high pressure air reservoir. The air undergoes a pressure reduction and cooling process. Such an antivirus helmet provides safe and comfortable air for medical staff to breathe during their work in an infectious disease ward.

The invention relates to the respiratory organs protection technical means that provide human with life support in the atmosphere unsuitable for breathing. Insulating breather with closed breathing mixture circulation loop (self-contained self-rescue, SCSR) is equipped with a cylinder (15) containing pressurized oxygen. The breather has increased effectiveness of the treatment of the exhaled gas mixture and improved quality of the inhaling gas mixture by using the breathing mixture circulation loop of the present invention and using means for simultaneous mechanical pressing on the breath-out bag (4) and the breath-in bag (8) and the additional cooling.

A portable air treatment system configured to be carried by an individual and deliver air, via a mask, to the individual, is provided. The system includes an air inlet allowing atmospheric air to enter at an air flow rate ranging between 2 liters/min to 10 liters/min, an air compression system connected with the air inlet for compressing the incoming air, thereby increasing the temperature of the air to a minimum temperature of 170° C., a hot air chamber connected with the air compression system for receiving the heated air from the air compression system and retaining the heated air for a period of 30-100 milliseconds, an air decompression system connected with the heated air chamber for expanding the heated air thereby decreasing the temperature of the heated air to a temperature ranging between 14° C. to 45° C., and an air outlet connected with the air expansion system for directing the cooled air to the individual via the mask.

A powered air purifying respirator (PAPR) with an active heating system. The PAPR includes a powered air component designed to be carried by a user of the PAPR, the powered air component including a fan and a filter, wherein the fan draws air from a user's environment through the filter. The PAPR further includes an electronically controlled active heating element and a control system. The control system varies the power provided to the heating element and further disables the heating element when potential overheating of the heating element is detected. The present invention further includes a heating module for use with a PAPR. The heating module includes an electronically controlled active heating element. The heating element is disabled when the fan in the PAPR is not rotating.

A cooling element (100) for use within a cooling device (600) of a closed-circuit respirator (690), includes a plate shaped cooling element housings (110, 120), each with a respective liquid-tight closure (112, 122) filled or to be filled with a coolant (211). The cooling element housings (110, 120) each have a plate outer wall (114, 124) and a plate inner wall (116, 126) arched in the direction of the plate outer wall, which form, together with additional side walls (115, 125), cooling element volumes (118, 128) for the coolant. The plate shape cooling housings can be fastened or are fastened to each other such that the one plate inner wall and another plate inner wall are located opposite each other and are arched away from one another.

A de-misting system for goggles includes a supply connector, a de-mist tube, and a diffuser. The supply connector is connectable to a de-misting gas source, and the de-mist tube is in fluid communication with the supply connector. The diffuser is in fluid communication with the de-mist tube, and the diffuser may be coupled to an orifice of the goggles to supply a de-misting gas to an interior volume of the goggles.

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 system for thermal regulation of a nebulizer is provided that is structured to deliver a chilled mist to the snout, muzzle, beak, or trunk of an animal. The system includes a container to house a nebulizer and a thermal material together and a mask to deliver the chilled mist to an animal. The thermal material acts to chill a liquid located inside the nebulizer in order to deliver a chilled mist to the animal for therapeutic purposes, such as initiating therapeutic hypothermia, or treating various respiratory illnesses such as croup, laryngobronchitis, and smoke inhalation.