Abstract: Described embodiments include a therapeutic oxygen supply apparatus. The apparatus includes at least two components, including an intake manifold component configured to receive concentrated oxygen, a compressor component configured to compress concentrated oxygen, an oxygen tank component configured to store concentrated oxygen, a patient manifold component configured to supply concentrated oxygen, or a control structure component configured to route a flow of concentrated oxygen. A sensor circuit acquires data indicative of a respective operational state of the at least two components. A rule-based engine selects a next operational state of a component in response to (i) the acquired data indicative of the respective operational states of the at least two components and (ii) a rule database having at least one rule responsive to an objective providing a therapeutic flow of oxygen to the patient. A configuration manager circuit generates a control signal implementing the selected next operational state.

Abstract: Disclosed embodiments include apparatuses for compressing dry ice. In an illustrative embodiment, an apparatus for compressing dry ice includes: a hollow cylinder; a post disposed coaxially in the cylinder; a piston defining an opening therein and being slidably disposed in the cylinder, the opening slidably receiving the post therein; a biasing device operatively coupled to the piston; an inlet port connectable to a source of liquid carbon dioxide and configured to introduce liquid carbon dioxide into the cylinder, the inlet port being further configured to expand liquid carbon dioxide to dry ice and to gaseous carbon dioxide; and an openably closable lid positionable among a first closed position configured to vent gaseous carbon dioxide from the cylinder, a second closed position configured to leakably close the cylinder to permit carbon dioxide flakes to be compressed in the cylinder, and an open position.

Abstract: Described embodiments include a therapeutic oxygen supply apparatus. The apparatus includes at least two components, including an intake manifold component configured to receive concentrated oxygen, a compressor component configured to compress concentrated oxygen, an oxygen tank component configured to store concentrated oxygen, a patient manifold component configured to supply concentrated oxygen, or a control structure component configured to route a flow of concentrated oxygen. A sensor circuit acquires data indicative of a respective operational state of the at least two components. A rule-based engine selects a next operational state of a component in response to (i) the acquired data indicative of the respective operational states of the at least two components and (ii) a rule database having at least one rule responsive to an objective providing a therapeutic flow of oxygen to the patient. A configuration manager circuit generates a control signal implementing the selected next operational state.

Abstract: Devices and systems for dry ice production are described, including a lid structure sized for placement over a storage container, an input tube sized to traverse a first opening in the lid structure and forming a flow conduit for pressurized carbon dioxide into the storage container, a vent tube sized to traverse a second opening in the lid structure and forming a flow conduit for gaseous carbon dioxide, a first end of the vent tube sized to fit into the storage container, a lower vent tube sized to fit in the storage container, the lower vent tube coupled to the first end of the vent tube and having openings to vent gaseous carbon dioxide from the storage container and into the vent tube.

Abstract: A device for application of even pressure on a plunger head includes: a center rod with a pressure plate affixed at a first end and a back plate positioned adjacent to a second end; a positioning spring adjacent to the pressure plate at a surface distal to the center rod; a positioning plate adjacent to an end of the positioning spring distal to the pressure plate; a housing including an aperture at a position adjacent to a distal surface of the positioning plate; a main spring surrounding the center rod between the back plate and the pressure plate; and a mechanism positioned to move the center rod between the pressure plate and the back plate, the mechanism positioned to compress the main spring between the pressure plate and the back plate in response to force applied by a user.