A personal protective device (PPE) comprising a face cover assembly and a bodysuit configured to be worn by a human user. The device protects users against airborne aerosol particles containing viruses or other infectious agents while enabling improved flexibility relative to prior art designs. The device includes a helmet-like” rotating face cover assembly that fits over the user's head and attaches to a collar on the biohazard bodysuit. This rotating face cover assembly has a plurality of different mask sides, each with differing geometries or other properties. The device enables a user to rotate (either manually or by electric motor) the masks and select a given mask side that best meets that user's needs. The different mask sides can accommodate different facial geometries, eyewear types, and use cases, such as operation in more hostile environments.

The invention can be used to produce personal protection systems of respiratory organs (RPE) and organs of vision from airborne and aerosol pathogens. Additionally, it can be used to create mobile low-power closed-type recirculation systems of UV cleaning and air disinfection in small rooms and volumes: salons and cabins of various vehicles, offices, classrooms, medical rooms, etc. According to the claimed characteristics, the invention provides a high level of bactericidal treatment of air flows, including human breathing, by irradiating the flow with UV radiation from UVC-LED source with the formation of multiple times amplified luminous flux in the multi-pass irradiation chamber. The technical result is expressed in a multiple increase in the bactericidal efficacy of the device compared to devices without such a chamber, as well as in the same reduction in the requirements for the radiation power of the primary radiators according to the required bactericidal efficacy of the device.

The invention can be used to produce personal protection systems of respiratory organs (RPE) and organs of vision from airborne and aerosol pathogens. Additionally, it can be used to create mobile low-power closed-type recirculation systems of UV cleaning and air disinfection in small rooms and volumes: salons and cabins of various vehicles, offices, classrooms, medical rooms, etc. According to the claimed characteristics, the invention provides a high level of bactericidal treatment of air flows, including human breathing, by irradiating the flow with UV radiation from UVC-LED source with the formation of multiple times amplified luminous flux in the multi-pass irradiation chamber. The technical result is expressed in a multiple increase in the bactericidal efficacy of the device compared to devices without such a chamber, as well as in the same reduction in the requirements for the radiation power of the primary radiators according to the required bactericidal efficacy of the device.

A powered air purifying respirator includes an inlet air filter; a flow generator configured to cause air from an ambient environment to flow through the inlet air filter and elevate pressure of the air to above ambient conditions; a mask in fluid communication with the flow generator and configured to fit tightly against a user's face or neck for delivery of the air to the user at the elevated pressure; and a one-way outlet valve configured to allow air exhaled by the user to be vented to the ambient environment. An outlet filter may be included to filter the air flowing through the one-way valve, and the outlet filter may be retrofit. The outlet filter may be preferred when filtration of both inlet and outlet air is desirable.

A powered air purifying respirator includes an inlet air filter; a flow generator configured to cause air from an ambient environment to flow through the inlet air filter and elevate pressure of the air to above ambient conditions; a mask in fluid communication with the flow generator and configured to fit tightly against a user's face or neck for delivery of the air to the user at the elevated pressure; and a one-way outlet valve configured to allow air exhaled by the user to be vented to the ambient environment. An outlet filter may be included to filter the air flowing through the one-way valve, and the outlet filter may be retrofit. The outlet filter may be preferred when filtration of both inlet and outlet air is desirable.

An oxygen mask assembly for assisting a user with breathing while wearing a mask includes a mask is wearable on a user's face such that the mask covers the user's mouth and nose. An oxygen tube extends through the mask to deliver oxygen to the user for breathing when the mask is being worn. An exhale valve is fluidly integrated into the mask and the exhale valve has a single direction of flow. In this way the exhale valve facilitates air exhaled by the user to pass through the exhale valve and inhibit air inhaled by the user from passing through the exhale valve. An oxygen reservoir containing gaseous oxygen is provided and the oxygen tube is fluidly coupled to the oxygen tank to deliver the gaseous oxygen to the user for breathing.

An oxygen mask assembly for assisting a user with breathing while wearing a mask includes a mask is wearable on a user's face such that the mask covers the user's mouth and nose. An oxygen tube extends through the mask to deliver oxygen to the user for breathing when the mask is being worn. An exhale valve is fluidly integrated into the mask and the exhale valve has a single direction of flow. In this way the exhale valve facilitates air exhaled by the user to pass through the exhale valve and inhibit air inhaled by the user from passing through the exhale valve. An oxygen reservoir containing gaseous oxygen is provided and the oxygen tube is fluidly coupled to the oxygen tank to deliver the gaseous oxygen to the user for breathing.

A magnetic quick connect for a fluid delivery system includes a male coupling member and a female coupling member. The male coupling member defines a first outer fluid communication path and includes a first magnetic material. A first inner member is disposed within the first outer fluid communication path and defines a first inner communication path. The female coupling member defines a second outer fluid communication path and includes a second magnetic material. A second inner member is disposed within the second outer fluid communication path and defines a second inner communication path. The male and female coupling members are detachably held together by an attractive force between the first and second magnetic materials such that the first and second outer communication paths are held in fluid communication, and the first and second inner communication paths are held in fluid communication.

A magnetic quick connect for a fluid delivery system includes a male coupling member and a female coupling member. The male coupling member defines a first outer fluid communication path and includes a first magnetic material. A first inner member is disposed within the first outer fluid communication path and defines a first inner communication path. The female coupling member defines a second outer fluid communication path and includes a second magnetic material. A second inner member is disposed within the second outer fluid communication path and defines a second inner communication path. The male and female coupling members are detachably held together by an attractive force between the first and second magnetic materials such that the first and second outer communication paths are held in fluid communication, and the first and second inner communication paths are held in fluid communication.

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.