A device for generating oxygen comprising at least one reaction chamber for housing a composition for generating oxygen, the composition comprising a combination of constituents consisting of at least one oxygen source, at least one ionic liquid, and at least one metal oxide compound, means for maintaining at least one of the oxygen source, the ionic liquid and the metal oxide compound physically separated from the remaining constituents, means for establishing physical contact of the oxygen source, the ionic liquid and the metal oxide compound, and means for allowing oxygen to exit the reaction chamber, wherein the metal oxide compound is an oxide of a single metal or of two or more different metals, said metal(s) being selected from the metals of groups 2 to 14 of the periodic table of the elements, and wherein the oxygen source comprises a peroxide compound.

A highly automated, fully-closed circuit rebreather and methods for operating the device by users with limited training and limited skill development are disclosed. Advanced sensors, electronics, software, assembly methods, and disposable cartridges dramatically reduce the skills required for assembly, operation, and maintenance of the unit. The use of the rebreather apparatus is primarily for recreational diving applications, but may be used for additional applications where the presence of breathable air may be absent or limited, such as hazardous duty applications, high altitude applications, no-atmosphere or low-atmosphere applications, and the like.

A patient interface of a respiratory therapy system is provided, and includes a mask body; a mask seal secured to the mask body and configured to form a seal with the user's face, at least around the user's mouth; the mask body and mask seal being arranged to define an interior breathing chamber of the patient interface; and an inlet to the breathing chamber configured to receive a flow of breathable gases into the breathing chamber. To assist in allowing a user to speak clearly whilst wearing/using the patient interface, a user actuatable speech valve is provided on the patient interface and is operable to selectively occlude and open a speech flow path from the breathing chamber to atmosphere when the user wishes to speak.

A patient interface of a respiratory therapy system is provided, and includes a mask body; a mask seal secured to the mask body and configured to form a seal with the user's face, at least around the user's mouth; the mask body and mask seal being arranged to define an interior breathing chamber of the patient interface; and an inlet to the breathing chamber configured to receive a flow of breathable gases into the breathing chamber. To assist in allowing a user to speak clearly whilst wearing/using the patient interface, a user actuatable speech valve is provided on the patient interface and is operable to selectively occlude and open a speech flow path from the breathing chamber to atmosphere when the user wishes to speak.

Various systems and devices for generating nitric oxide are disclosed herein. According to one embodiment, the device includes a body having an inlet, an outlet, and a porous solid matrix positioned with the body. The porous solid matrix is coated with an aqueous solution of an antioxidant, wherein the inlet is configured to receive a gas flow and fluidly communicate the gas flow to the outlet through the solid matrix to convert nitrogen dioxide in the gas flow into nitric oxide. The porous solid matrix allows the device to be used in any orientation. Additionally, the porous solid matrix provides a rigid structure suitable to withstand vibrations and abuse without compromising device functionality.

Various systems and devices for generating nitric oxide are disclosed herein. According to one embodiment, the device includes a body having an inlet, an outlet, and a porous solid matrix positioned with the body. The porous solid matrix is coated with an aqueous solution of an antioxidant, wherein the inlet is configured to receive a gas flow and fluidly communicate the gas flow to the outlet through the solid matrix to convert nitrogen dioxide in the gas flow into nitric oxide. The porous solid matrix allows the device to be used in any orientation. Additionally, the porous solid matrix provides a rigid structure suitable to withstand vibrations and abuse without compromising device functionality.

An emergency elevator includes a door frame installed on upper, left and right sides of an entrance of an elevator platform, an elevator car configured to vertically move along an elevator passage and provided with a pair of elevator doors, a pair of platform doors installed in the door frame, a lower frame installed on a lower side of the entrance of the elevator platform and configured to slidably support the platform doors, an upper door rim installed on an upper side of the platform doors, a side door rim vertically installed at a lateral end of the platform doors, an oxygen supply device configured to supply oxygen to a patient in the elevator car, an emergency ventilation device configured to supply a purified air into the elevator car, and a filter device provided in the blowing duct so as to remove harmful substances introduced into the elevator car.

An emergency elevator includes a door frame installed on upper, left and right sides of an entrance of an elevator platform, an elevator car configured to vertically move along an elevator passage and provided with a pair of elevator doors, a pair of platform doors installed in the door frame, a lower frame installed on a lower side of the entrance of the elevator platform and configured to slidably support the platform doors, an upper door rim installed on an upper side of the platform doors, a side door rim vertically installed at a lateral end of the platform doors, an oxygen supply device configured to supply oxygen to a patient in the elevator car, an emergency ventilation device configured to supply a purified air into the elevator car, and a filter device provided in the blowing duct so as to remove harmful substances introduced into the elevator car.

A composition for generating oxygen, comprising at least one oxygen source includes at least one ionic liquid, and at least one metal salt, wherein the oxygen source comprises a peroxide compound, the ionic liquid is in the liquid state at least in a temperature range from 10 C. to +50 C., and the metal salt has an organic and/or an inorganic anion, and comprises one single metal or two or more different metals. The present invention also relates to methods for generating oxygen, and to the use of ionic liquids in oxygen generating compositions.

A composition for generating oxygen, comprising at least one oxygen source includes at least one ionic liquid, and at least one metal salt, wherein the oxygen source comprises a peroxide compound, the ionic liquid is in the liquid state at least in a temperature range from 10 C. to +50 C., and the metal salt has an organic and/or an inorganic anion, and comprises one single metal or two or more different metals. The present invention also relates to methods for generating oxygen, and to the use of ionic liquids in oxygen generating compositions.