A portable re-breathing apparatus is proposed. the portable re-breathing apparatus includes a mask configured to be worn on face of a user to correspond to mouth thereof and connected to a main hose through which air flows, a first oxygen mixing part connected to the main hose and through which exhalation flows, a second oxygen mixing part (200) configured to remove carbon dioxide (CO2) in the exhalation and to provide oxygen to the mask through the main hose, an air movement part connecting the first oxygen mixing part to the second oxygen mixing part (200), an oxygen supply unit including an oxygen container compress-storing oxygen and configured to supply oxygen to the second oxygen mixing part (200), and a controller (500) connected to the first and second oxygen mixing parts and the oxygen supply unit and configured to regulate CO2 and oxygen density to allow the user to breath.

A facemask includes integrated actuating modules having sensors and other mechanisms. The facemask has one or more sockets into which various modules may be inserted. The facemask itself or the modules may include air filters and check valves to regulate airflow along or through the various modules. The modules may detect various substances either in the ambient air or the air exhaled by the wearer. The facemask also includes modules for measuring pulmonary and/or cardiovascular exertion, lung capacity and other physiological metrics. Other modules may provide supplements, vitamins or other substances such as tobacco smoke or vapor from vaporizers to the wearer. The modules may include microcontrollers in wireless communication with software applications on electronic devices so that the facemask may also serve as a cellular phone.

An air purification apparatus for nasal application is provided for purifying and/or reducing undesirable materials from air intended to enter a nasal cavity. The air purification apparatus for nasal application may include an air purification apparatus, housing component, power component, fan component, filtration component, germicidal irradiation component, aroma component, nose plug component, monitoring component, and case.

The air purification face mask structure of the present invention, which includes a body, a fan, a filter, an outer cover, an air deflector, an ultrasonic vibration device, a face mask body and a strap, in which external air is guided into the face mask by the fan and the air deflector, and a solution like an enzyme or essential oil in a container is converted into an atomized state by the ultrasonic vibration device for spraying towards the mouth and the nose of a user, thereby achieving anti-bacterial and anti-inflammation effects.

A soft medical silicone edged cushion may significantly reduce air leakage and provide comfort to a wearer of a face mask, for example, when the face mask is continually worn by a healthcare worker for a twelve-hour shift of medical duty. The cushion may preferably be U-shaped and comprise a cross-section for holding an extra soft silicone gel or air, yet be sufficiently hard and elastic and of predetermined circumference to be adaptable to self-installation to the lateral edges of a face mask and coatable to protect from the escape of air and fit comfortably on a face despite the use of elastic straps with the face mask or the presence of solid plastic lateral edges of an oxygen mask or a ventilator mask. The cushion may be used to cushion a solid plastic laterally edged oxygen or ventilator mask against the use of elastic ties to tie the face mask around a patient's head. The face mask may comprise a UVC source of ultraviolet light controlled by buttons/displays/battery/USB charging port on the cushion or on a UVC cartridge replacing a filter of an N95 mask.

A flow through photochemistry apparatus and methods of use are disclosed in the present application. One or more reactant materials are passed through a reaction chamber and are exposed to electromagnetic radiation. The reaction chamber has reflective walls arranged to reflect electromagnetic radiation across the volume of the chamber a plurality of times, thereby increasing the probability of the electromagnetic radiation interacting with the reactive materials. The reaction chamber may be used for sterilization and photochemistry applications.

A powered air-purifying respirator has a blower unit with an inlet and an outlet. The blower unit draws air through the inlet and out of the outlet. A filter assembly is removably connected on the outlet end of the blower unit. The filter assembly has a first end and a second end. The first end is removably connected to the outlet of the blower unit, and the second end of the filter assembly is adapted and configured to be coupled to a breathing hose.

A powered air-purifying respirator has a blower unit with an inlet and an outlet. The blower unit draws air through the inlet and out of the outlet. A filter assembly is removably connected on the outlet end of the blower unit. The filter assembly has a first end and a second end. The first end is removably connected to the outlet of the blower unit, and the second end of the filter assembly is adapted and configured to be coupled to a breathing hose.

A removable mask airflow device, comprising a first portion constructed and arranged to be positioned at an exterior surface of a facemask, the first portion comprising an opening and at least one flow processing device disposed at the opening and a second portion constructed and arranged to be positioned at an interior surface of the facemask. The at least one flow processing device is configured to process fluid flow through the opening. The second portion is constructed and arranged to couple with the first portion with a portion of the facemask being between the first portion and the second portion.

A removable mask airflow device, comprising a first portion constructed and arranged to be positioned at an exterior surface of a facemask, the first portion comprising an opening and at least one flow processing device disposed at the opening and a second portion constructed and arranged to be positioned at an interior surface of the facemask. The at least one flow processing device is configured to process fluid flow through the opening. The second portion is constructed and arranged to couple with the first portion with a portion of the facemask being between the first portion and the second portion.