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5390665 |
Anaesthetic vaporizer having a pressure sensitive diaphragm connecting the anaesthetic reservoir and vaporizing chamber
An anaesthetic vaporizer includes a passageway 10, 30 for directing carrier gas through a fixed laminar restrictor 32 to a vaporizing chamber 26. Liquid anaesthetic agent is injected into the...
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5386824 |
Lightweight breathing device
A lightweight breathing device for underwater use, and in contaminated air is disclosed. The device employs a one-way valve which requires only one hand to effect operation, and a closure stem...
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5385141 |
Speech diaphragm and exhalation valve
A combined speech diaphragm and exhalation valve for a respirator is formed as a unitary sub-assembly whereby the speech diaphragm is movable in unison with the exhalation valve.
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5383449 |
Ventilator control system for mixing and delivery of gas
The ventilator control system for delivery respiratory gas to a patient involves an apparatus which includes a pressure sensor for measuring the pressure within a gas containment vessel, the...
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5379762 |
Mouthpiece unit of diving respirator
A mouthpiece unit of a diving respirator wherein a device for opening and closing an aperture of a mouthpiece side of a mouthpiece unit body is provided, and a part of a respirable gas for...
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5379761 |
First stage scuba regulator
A first stage pressure regulator for use with a high pressure source of breathable gas includes a housing and either a yoke arrangement for connection to the conventional U.S. high pressure gas...
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5368020 |
Automatic breathing apparatus for underwater immersion at medium and great depth
The disadvantages of operation "rigidity" found in automatic breathing apparatus according to the prior art are overcome by means of a regulator group made in a number of versions and capable of...
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5368018 |
Breathing apparatus mouthpiece
A breathing apparatus mouthpiece which is reversibly switchable between an open circuit and a closed circuit system by rotating a special valve in the mouthpiece. The breathing apparatus mouthpiece...
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5368022 |
In-line first stage air pressure regulator for use in scuba diving
An in-line air pressure regulator for scuba diving is designed to augment an independent air supply system in the event of a failure of the primary pressure regulator. The in-line air pressure...
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5360000 |
Pneumatic demand oxygen valve
A compact, simplified, totally pneumatic demand valve designed for coupling between a source of pressurized gas and a recipient user is provided which achieves a high degree of sensitivity and flow...
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5357950 |
Breath actuated positive pressure demand regulator with override
A positive pressure demand regulator having a housing with a connection for delivering breathing gas with an outlet connected to the housing for attachment to a mask. A diaphragm is mounted in the...
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5357949 |
Breathing protection installation for aircraft passengers
An oxygen breathing apparatus for protection of aircraft passengers against aircraft depressurization has a pressurized oxygen storage and a distribution unit operated responsive to loss of...
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5357951 |
Cardiac pulmonary resuscitator apparatus valve with integral air sampling port
The cardiac pulmonary resuscitator improved patient valve has a top and bottom portion joined together forming a cylindrical housing. A diaphragm is mounted between the housing top and bottom...
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5355875 |
Protective garment using one-way valves
An anti-contamination suit having one-way valves for use in expelling air from the suit of protective clothing so that a constant flow of air from an outside source can supply fresh, uncontaminated...
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5351682 |
Breathing demand regulations
An aircrew breathing regulator having facility for mixing ambient air with oxygen-enriched breathing gas in supplying breathing gas to an end user, includes a demand valve connected between an...
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5348001 |
Oxygen breathing controls
The oxygen breathing control of the present invention for supplying oxygen to a user employs a first stage regulation module, a valving module which couples with the first stage regulation module,...
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5345930 |
Method and apparatus for assisting expulsional movement of pulmonary secretions via supramaximal flows
There is described a non-invasive device designed to assist expectoration pulmonary secretions in humans, particularly in those whose natural exhalation and natural coughing ability are impaired....
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5343858 |
Second stage demand breathing regulator
A second stage demand regulator is disclosed which has a regulator body with a spring loaded poppet valve mounted therein. A diaphragm mounted in said regulator body responds to pressure...
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5339807 |
Exhalation valve stabilizing apparatus
The movements of an exhalation valve are damped at a variable rate to control pressure oscillations within a ventilation system. The exhalation valve is damped as a function of its velocity at a...
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5335652 |
Gas ratio control device for anesthetic apparatus
A gas ratio control device for anesthetic apparatus with an anesthetic gas feed line 1, which has a control valve 12 and a first measuring resistance 6, and an oxygen feed line 2 with a second...
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5333606 |
Method for using a respirator accessory access port and adaptor therefore
An endotracheal respiration system is disclosed which includes a respirator manifold which includes a port for attachment and detachment of an accessory device thereto without interruption of...
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5329921 |
Endotracheal tube
An improved endotracheal tube and an adapter for a standard endotracheal tube allow the performance of various medical procedures while maintaining continuity of respiration and protecting the...
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5323773 |
Throttle valve of diving respirator
A throttle valve of a diving respirator, wherein an orifice valve is inserted slidably in a hole of a cylindrical valve body, an orifice is formed in said valve body so as to communicate a gas...
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5318019 |
Emergency portable oxygen supply unit
An emergency portable oxygen supply unit for use in assisting a person to breath in an oxygen depleted environment such as that present within a structure during a structural fire. The unit has a...
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5315990 |
Method for delivering incremental doses of oxygen for maximizing blood oxygen saturation levels
Methods for automatically maximizing blood oxygenation saturation or maintaining blood oxygen saturation levels in adult patients having an oxygen requiring pulmonary disease and infant patients...
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5315989 |
Medical ventilator
A medical ventilator is provided which continuously controls both inspiratory and expiratory flow and pressure, including positive end expiratory pressure (PEEP), through control of a single...
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5313938 |
Valved resuscitation pump having secretion removal means
A cardiopulmonary resuscitating pump, comprising, a housing having a top wall (20), a bottom wall (21) and a side wall (22) in the form of a bellows which is capable of contracting and expanding...
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5309904 |
Insufflating/suctioning valve
An insufflating/suctioning valve having a valve body containing fluid flow controlling members which are two resilient plastic tubes, a spring-biased actuating mechanism having three positions to...
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5303699 |
Infant ventilator with exhalation valves
A ventilator device for artificial ventilation use in infant and pediatric wards, and which may be adapted for use with adult patients as well. The ventilator device comprises a pressure control...
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5301667 |
Pressure limiting valve for ventilation breathing bag apparatus
Pressure limiting valve for being inserted into ventilation gas apparatus which valve includes a first vent for venting ventilation gas present in the apparatus above a first pressure to provide...
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5299568 |
Method for controlling mixing and delivery of respiratory gas
The ventilator control method for delivery of respiratory gas to a patient involves an apparatus which includes a pressure sensor for measuring the pressure within a gas containment vessel, the...
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5293864 |
Emergency breathing apparatus
An EBA system is provided which includes a primary source of pressurized air, a secondary source of pressurized air, hoses leading the primary and secondary sources of pressurized air to an EBA...
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5280784 |
Device in particular and inhalating device for treating the lung and the respiratory tracts
An inhaling device for treating the lungs and respiratory tracts of humans or animals has a pressurized gas source, an atomizer connected to the gas source in a pressure conveying manner, a...
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5280780 |
Oxygen delivery and conserving device
An apparatus for conserving oxygen delivered to a patient including a flat annular housing with an interior chamber having an outlet and inlet port, with the outlet port affixed to a flow check...
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5275153 |
Demand valve having reaction load means and an insertable trigger element
Emergency breathing equipment intended to provide short term life support by ducting breathable gas from a small capacity source to a user via a restricted flow path that allows only limited flow...
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5271390 |
Positive pressure breathing assembly and demand regulator therefor
A self-contained breathing assembly of the positive pressure type including a remotely positioned improved pressure demand regulator for substantially instantaneous response for breathing air...
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5269295 |
Aircraft aircrew life support apparatus
A breathing demand regulator for use in aircrew life support apparatus has an aneroid capsule 56 coacting with a valve head 50 to restrict outflow from a breathing pressure control chamber 32. The...
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5265594 |
Apparatus for regulating the flow-through amount of a flowing medium
An apparatus, such as a ventilator, for regulating the flow-through amount of a flowing medium, such as a gas, has a valve with a variable orifice operated by a first regulating circuit with...
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5265597 |
Passenger oxygen mask having a plurality of fingers and recesses for mounting the mask to an oxygen bag
A lightweight, easily maintainable passenger oxygen mask is provided with a face mask sized to cover the mouth and nose of a passenger and a reservoir bag in communication with the face mask....
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5265593 |
Balloon-tipped catheter ventilation system and method for using same having rhythmically inflated and deflated balloon
A catheter system for ventilating patients experiencing severe respiratory distress. The system comprises a balloon-tip catheter, means for supplying a stream of oxygen gas at a controlled pressure...
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5265596 |
Device for feeding breathing gas
The expansion valve unit, coupled to a lever of a diaphragm by means of a rod unit extending through the internal cavity of the housing, includes heat exchange with the surrounding medium, a rod...
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5263477 |
Chemical and biological warfare filter injector mechanism
An injector mechanism uses breathing system gas to entrain cabin air to demist and defog the hood and visor of an aircrew chemical and biological warfare ("CBW") suit. The injector includes a...
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5261396 |
Divers' snorkel purge reservoir
The specification discloses a diver's snorkel having an elongated tube with a fitting at the end incorporating a mouthpiece. Distal from the mouthpiece is a water drainage purge chamber extending...
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5259375 |
Second stage scuba regulator with balanced piston volume control
A second stage scuba regulator is provided which includes inlet for receiving a supply of compressed air and a piston valve in communication with the inlet for causing air flow through the...
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5259374 |
Diver adjustable control for underwater breathing apparatus
A control device for an air inlet valve to a second stage regulator for an underwater breathing apparatus which allows a diver, while wearing the apparatus, to adjust the amount of suction pressure...
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5255676 |
Safety sealed tracheal suction system
A unitized ventilating system with front, side, and rear swivel connections and a sealed suction catheter assembly permitting continuous ventilation of a patient and combined suctioning ability....
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5255687 |
Zero dead space respiratory exercise valve
A pulmonary valve for use with fitness level respiratory testing equipment, having a tubular silicone rubber body member. Formed at one end of this member is a mouth seal which is subsequently...
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5251618 |
Regulator second stage for scuba
The regulator second stage for scuba incorporates a pneumatically balanced valve mechanism of high flow capacity which operates without significant influence from friction. The compression spring...
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5247926 |
Aircrew breathing gas regulators
A breathing gas regulator for regulating delivery of breathing gas to an aircrew member wearing a liquid filled G-suit includes a relay valve having a diaphragm mounted valve plate for sensing...
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5245997 |
Valve cartridge assembly for a pressure regulator of supplied air breathing apparatus
A cartridge valve assembly is slidably and sealingly receivable in a recess therefor in the housing of a pressure regulator for supplied air breathing apparatus. The cartridge valve is preassembled...
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