Abstract: A scrubber-heating apparatus for a diving rebreather includes an oxygen supplying element. The oxygen supplying element has a gas mixing portion connected thereto. The gas mixing portion has a breath connecting element connected thereto. The breath connecting element has a scrubber connected thereto. The scrubber is provided with an absorbent heating element and a temperature detecting component. The temperature detecting component has a state display connected thereto. The absorbent heating element and the state display are electrically connected to a power supplying portion. Thereby, the scrubber can recycle gas exhaled by a user to prolong the duration of use of the rebreather. Additionally, the absorbent heating element increases the temperature in the scrubber, thereby enhancing the adsorption efficiency and prolonging the overall duration of use.

Abstract: A medication delivery apparatus and system for the application of a medical agent to a treatment site, such as an airway, and method for use of same are disclosed. In one embodiment of the medication delivery apparatus and system, a reservoir supplies a medical agent to a lower chamber of a housing wherein an ultrasonic transducer applies ultrasonic energy thereto, thereby nebulizing the medical agent. A control valve is interposed between a source of positive pressure air and an upper chamber of the housing to selectively apply positive air pressure to the upper chamber. Upon the application of positive air pressure, the airflow delivers the nebulized medical agent to a target location, such as the airway.

Abstract: A device, system, and method for isolating a ventilator from one or more patients in which the delivery conditions of gas delivered to an isolation device from a ventilator may drive the delivery of breathing-gas delivered to one or more patients, the breathing-gas having the same or different delivery conditions. In one embodiment, an isolation device may have a housing and a movable partition. The movable partition may be joined to the housing, The movable partition may have a patient side on a first side of the partition and an actuating side on a second side of the partition. The isolation device may include an inlet pressure regulator on the actuating side and/or an exhaust pressure regulator on the patient side. These regulators may alter the delivery conditions (including, but not limited to, pressure and volume) of breathing-gas delivered to a patient.

Abstract: An adjustable volume control manual resuscitation bag assembly includes a resuscitation bag, a volume control knob, a traction assembly operating in response to adjustment of the control knob, and a follower assembly including a bag compression limiting member and a follower which are moved in response to operation of the traction assembly to adjust and limit the volume of gas delivered by compression of the bag.

Abstract: A method and/or system for a breathable air safety system for both emergency and civilian personnel are disclosed. In one embodiment, a safety system includes a supply unit of a structure to facilitate delivery of a breathable air from a source of compressed air to an air distribution system of the structure, a civilian air supply enclosure of the structure to provide a civilian pressure of the breathable air such that the civilian pressure is suitable for direct human consumption through a civilian breathable air apparatus coupled with the civilian air supply enclosure, a firefighter air supply enclosure of the structure to provide a high-pressure of the breathable air such that the high-pressure is suitable to fill the breathable air in a firefighter breathable air apparatus through a RIC/UAC connector of the fill panel and/or a CGA connector.

Abstract: In a method, ventilator and ventilator control unit for determining an end-expertorial lung volume (EELV) for a mechanically ventilated patient, a breathing gas is provided to the patient that has a first fixed N2/O2 gas composition, at least until the N2/O2 gas composition in air expired from the patient is constant. At least once, at a first predetermined point in time, the N2/O2 gas composition in the breathing gas is changed to a second fixed composition. The change in the N2/O2 gas composition exhaled by the patient for each breath is measured until a second point in time at which the level of expired O2 in at least two subsequent breadths is substantially stable. The measurement is made downstream of the expiratory tube of the ventilator. The total gas volume is determined for each breath, and the EELV of the patient's lungs is determined based on the change in O2 level between the first and second points in time.

Abstract: The invention relates to a respiratory protection mask for a compressed air breathing apparatus comprising a pulmonary machine which is controlled by a control membrane when the wearer of the mask breathes in. According to the invention, the air outlet of the expiratory valve and the control membrane are covered by a common cover, forming a rinsing area on the outside of the control membrane through which homogeneously temperate, clean rinsing air flows from the air outlet to the air discharge openings in the cover, thereby ensuring high functionality and high service life of the membrane-controlled pulmonary machine despite extreme environmental conditions.

Abstract: A continuous positive airway pressure device which includes:—an inflatable breathable air reservoir provided with an air inlet/outlet;—a pressurized gas reservoir arranged to apply a predetermined substantially constant pressure on the breathable air reservoir, irrespective of the degree of inflation of the breathable air reservoir.

Abstract: A unidirectional valve, wherein the valve comprises a valve body including a frame, a valve opening through the frame, and a valve seat extending from the frame and at least partially surrounding the valve opening. The valve further includes a valve flap having a first portion attached to the frame and an adjacent second portion free to move from a first position where the second portion is in contact with at least a part of the valve seat to a second position where at least part of the second portion is spaced from the valve seat, wherein the valve flap has a contour profile. The contoured profile may be along the length of the valve flap, between the point of attachment of the flap to the frame and the flap end, or from one flap side edge to a second side edge.

Abstract: In one embodiment, the invention provides a device for decreasing intracranial or intraocular pressures. The device comprises a housing having an inlet opening and an outlet opening that is adapted to be interfaced with a person's airway. The device further includes a valve system that is operable to regulate respiratory gas flows through the housing and into the person's lungs during spontaneous or artificial inspiration. The valve system assists in lowering intrathoracic pressures during each inspiration to repetitively lower pressures in the venous blood vessels that transport blood out of the head to thereby reduce intracranial or intraocular pressures.

Abstract: A respirator for a compressed air breathing apparatus including a lung machine controlled by a control membrane and an expiratory valve with an air outlet. The air outlet of the expiratory valve and the control membrane of the lung machine are covered by a common lid spaced from the expiratory valve and control membrane, with there being at least one air discharge opening on the lid that forms a purging space around the control membrane through which air from the air outlet passes so as to move against the control membrane and to the at least one discharge opening.

Abstract: A ventilation device is disclosed including a self-inflating bag which when compressed produces an outgoing flow, an inlet and an outlet and at least one valve connected to the inlet and/or outlet. The valve is disposed to control the flow out of the air outlet. One or more sensors positioned to sense air flow through the inlet or outlet produce outputs that are used by a controller to control opening and closing of the at least one valve to reduce hyperventilation.

Abstract: A container (1) having a first compartment (3) and a second compartment (5) separated by a movable gas impermeable partition (7) is used for storing and dispensing a gas for use in a process and receiving and storing a gas recovered from the process. Fresh gas is dispensed (9) from the first compartment (3) for use in a process and recovered gas is fed (11) to the second compartment (5), whereby a volume of the second gas displaces a volume of the first gas by movement of the partition (7) to enlarge the second compartment (5) relative to the first compartment (3).

Abstract: A combination of a bellows structure (12), volume restrictor, and pressure restrictor for use on a hand-operated resuscitator is provided to enable delivery of ventilation within specific volume and pressure limitations specified by the operator. The bellows structure (12) consistently provides predictable and uniform generation of gas flow for ventilation without regard to one or two-handed technique, hand placement, or hand size. The volume restrictor, primarily comprising of an inflow obturator (20), outflow obturator (22), and placement cam (34), enables the physician to specify a specific tidal volume to be delivered, which constitutes a volume-controlled cycling capability of the invention. The pressure restrictor, primarily comprising of an outer housing (40), stopper housings (41), and a stopper (50), enables the physician to specify a specific maximum airway pressure to be exposed to the patient, which constitutes a pressure-controlled cycling capability of the invention.

Abstract: An oxygen therapy face mask has a face engaging portion and a valve assembly connected thereto. The valve assembly has a first passage communicating with the interior of the face engaging portion from which gas can flow into the face engaging portion and into a patient's mouth and nose and which can also receive gas from a patient's mouth and nose and the interior of the face engaging portion. A first one-way valve is associated with the first passage and a second passage connectable to an oxygen reservoir bag and to an external source of pressurized oxygen. The first one-way valve is operable to permit flow of gas from the second passage to the first passage and to prevent flow of gas from the first passage to the second passage. A second one-way valve is associated with the first passage and is operable to permit flow of gas from the first passage to the external atmosphere and to prevent flow of gas from the external atmosphere to the first passage.

Abstract: A breathing gas feed assembly for the flight crew of an airplane comprises an emergency breathing mask and a stowage box for the mask. The box is adapted to receive the mask diagonally and it is closed by two doors hinged about respective hinge axes situated on two adjacent edges of the box.

Abstract: Isolation devices and methods of controlling a partition are disclosed. Devices according to the invention have a housing disposed about a movable partition. The housing has respirator and patient sides on respective first and second sides of the partition. The housing also has: (a) a respirator orifice on the respirator side, adaptable to be in pneumatic communication with a respirator; (b) a patient inspiration orifice on the patient side, adaptable to be in pneumatic communication with a patient; (c) a bias inflow orifice on the patient side, adaptable to be in pneumatic communication with a source of inspiratory gas; and, (d) an expiration return orifice on the patient side. The devices may further include a partition position sensor, a CO2 scrubber, and a controller operable to regulate gas flow to the bias inflow orifice based on partition position.

Abstract: A ventilator circuit is provided for use with a ventilator and a low pressure low flow oxygen source to provide a hyper-oxygenated mixture of air and oxygen at the onset of inspiration. The ventilator circuit achieves this result by using its inspiratory limb to store oxygen between breaths. As a result, the oxygen content of dead space gas is increased before delivery to the distal alveoli of the patient. Accordingly, the ventilator circuit achieves an efficient use of available oxygen and requires less oxygen to a desired oxyhemoglobin percentage at the patient.

Abstract: Provides an emergency air supply system that is worn around the arm, presumably the wrist, and intended for use in air restrictive emergency conditions. Primarily it has been designed for the need to improve safety for water recreation or water sports where an individual is often caught gasping for air. This device is purposely designed to be no more obtrusive than a piece of clothing, such as a bathing suit, or a watch band would be, in order that it does not unduly restrict the water activity or water sport or any other potentially air restrictive activity you may engage in. The design is intended to encourage usage and increase safety, by way of its structural design that uses the strap-band itself as the mechanical structure of the entire mechanism. Thus creating a unique compact design, that is convenient to wear and provides air when you most need it.

Abstract: A squeeze bag resuscitator has a flow diverter push fitted onto its exhaust outlet in any desired orientation. The diverter has a color change carbon dioxide indicator strip fixed to the inside surface of a transparent deflector plate. The indicator is protected from light externally by an opaque elastomeric strip attached by engaging surface formations to the outside of the plate. The indicator is also protected on the interior of the plate by an opaque strip, which projects from the diverter so that it can be removed by pulling on the free end.

Abstract: Breathing equipment with a circuit for breathing gas and with a flat calcium hydroxide absorber (1) is cooled by an evaporating agent with improved cooling. A gas volume flow of at least 60 L per minute is admitted to the outer surface (14) of the calcium hydroxide absorber (1) receiving the evaporating agent by at least one gas delivery device (5). The evaporating agent is delivered to the outer surface (14) of the calcium hydroxide absorber (1) by an admitted pressure from an evaporating agent reservoir (10) via at least one connection line (12).

Abstract: A respirator with a tidal volume-measuring device (6) between a respiration bag (8) and a patient adapter (2) provides accurate metering of the tidal volume. The device includes a first pressure-measuring device (4) and a breathing gas interruptor (5) in series sequence between the patient adapter (2) and the tidal volume-measuring device (6). A second pressure-measuring device (7) is provided between the tidal volume-measuring device (6) and the respiration bag (8). A control unit (20) is connected with the tidal volume-measuring device (6) and the pressure-measuring devices (4, 7) and sends control signals in such a way that when a predetermined tidal volume is reached, the breathing gas interrupter (5) is switched to the closed position, and that the closed position is eliminated when the pressure p2 measured with the second pressure-measuring means (7) has dropped below the pressure p1 determined with the first pressure-measuring means (4).

Abstract: The present invention provides a lung simulator comprising a substantially-rigid, fluid-tight, translucent housing simulating a human thoracic cavity and at least one flexible air-tight bag simulating a lung having a plurality of simulated lung lobes, and a corresponding plurality of valves, each of the plurality of valves coupled to a one of the plurality of simulated lung lobes and configured to simulate varying degrees of fluid flow resistance. In a preferred embodiment, the substantially-rigid, fluid-tight, transparent housing has isolated simulated left and right thoracic cavities therein and the at least one flexible air-tight bag is located within one of the simulated thoracic cavities. The present invention further provides a method of manufacturing a lung simulator.

Abstract: A pressurized gas supply system includes a pressurized container which expands and contracts. The container includes a one-piece liner molded from a polymer which is reinforced by a high tensile fiber such as KEVLAR®. A valve is molded into the liner, and a regulator is connected to the valve. A hose, having a conserver positioned therealong, extends between the regulator and a fitting allowing a user to inhale gas from the container. The container is carried in a carrying bag, which can be in the form of a carrying case, a purse, or a back-pack.

Abstract: The inventions relates to a small light device (1) for inhaling medicaments using supported pressure respiration, comprising a mouthpiece (2), a reservoir (5; 12), which has a variable volume for receiving respiratory gas and which can be connected to the mouthpiece (2) and into the flow either directly or using a distributor (3), an adjustable, gas-tight closer (8) between the mouthpiece (2) and the reservoir (5; 12) and at least one connecting element (10; 17) for the medicament supply to the reservoir, (5; 12), said medicament being supplied either directly or indirectly, using a distributor (3). The reservoir (5; 12) has a wall which adjusts to its change in volume. Said wall can be expanded against a restoring force by the pressurised influx of respiratory gas, in such a way that the supported pressure respiration take place using the effect of the restoring force during inhalation of the respiratory gas which contains the medicament.

Abstract: An isolation device is disclosed. The isolation device may have a movable partition and a housing disposed about the movable partition. The isolation device may have a partition biaser joined to the partition, and a CO2 scrubber. A method of delivering inspiratory gas to a patient is also disclosed.

Abstract: A pressurized gas supply system includes a pressurized container which expands and contracts. The container includes a one-piece liner molded from a polymer which is reinforced by a high tensile fiber such as KEVLAR®. A valve is molded into the liner, and a regulator is connected to the valve. A hose, having a conserver positioned therealong, extends between the regulator and a fitting allowing a user to inhale gas from the container. The container is carried in a carrying bag, which can be in the form of a carrying case, a purse, or a back-pack.

Abstract: A system and method for storage and delivery of a cryogenic mixed gas is disclosed, the storage apparatus including a compact and lightweight dewar for containing cryogenic temperature mixed gas at supercritical pressure. Different heat exchangers associated with the dewar provide for heat input to the dewar to maintain gas therein in a single phase and provide continued expulsion energy. A backpack receives the dewar and includes means for quick connect of the dewar with an end use outlet, intermediate heat exchangers in the backpack conditioning the mixed gas for end use. No electrical input for fluid circulation is required.

Abstract: A breathing apparatus comprises at least one spherical container (15) for breathable gas attached to a harness (1,9,20,21) (5) (109) for securing the same to a user. Each container may be located within a protective casing (14,14′) and is preferably formed of composite material.

Abstract: An inhalation device has a container 2 for an aerosol volume inhaled via a channel 15 and a mouthpiece 14, the container being located within a housing 12. The aerosol, in particular vitamin A, is introduced from a cartridge 17 into the interior of the container 2 via a nebulizer 18. The breath flow in the inhalation device is controlled via a control means 5 that keeps the inhalation flow essentially constant during the entire inhalation period.

Abstract: An improved manual pump is disclosed. The manual pump comprises a pair of side plates (10), a flexible cylindrical wall (15), a pump chamber (21), an axial shaft (11), a coil spring (12) and a pair of handle bars (16) secured to the side plates (10). When the handle bars (16) are grabbed and clutched with a hand, the side walls (10) are turned in opposite directions, twisting the pump chamber (21) to discharge fluid. The coil spring (12) assists to restore the original shape of the pump chamber (21) to charge fluid.

Abstract: A gas concentrator adaptable for use within a breathing apparatus, particularly for use within a resuscitator, Trach T, patient tee, or a high oxygen concentration mask. The gas concentrator distributes gas into the resuscitating device through a substantially elongated member that has a number of perforations at one end and a stopper at an opposite end. In addition, the gas concentrator has one or more air check valves that are in fluid communication with the reservoir of the resuscitating device and the atmosphere. A front manifold is used to couple the reservoir to a patient breather apparatus which regulates the flow of oxygen or gas to the patient.