Abstract: An automatic ventilator for cardio-pulmonary resuscitation (CPR) comprising: an automatic ventilating circuit adapted for delivering two cycles of positive pressure breathable gas flow ventilation to a patient's airway; and a CPR timing circuit adapted to emit timed signals over a CPR period, after said two cycles, to guide an operator to time chest compressions applied to a patient.

Abstract: The invention provides an in-line low supply pressure alarm device powered solely by supply flow of pressurized gas from a gas supply for providing an alarm signal when supply gas pressure is below a selected minimum pressure. The alarm device includes a manifold having an input port for communicating with the supply gas supply, an output port for conducting the gas downstream and a manifold chamber disposed therebetween. Gas powered alarms such as an audible reed alarm or a visual pneumatic alarm are connected to the manifold chamber via an alarm supply conduit, and produce an alarm signal when pressurized gas passes to the alarms. An supply gas pressure sensor, in communication with the manifold chamber, produces an actuating flow of pressurized gas by activating a pressure switch, in response to sensing of an supply gas pressure below the selected minimum pressure.

Abstract: An automatic resuscitation device for administering a breathable gas under pressure to a patient by an operator where all operating controls and alarms are powered by the pressurized gas in a manual override mode, a patient breathing deemed override mode, and an automatic mode. The device uses no power source other than the pressurized gas to drive alarms and the entire control system. The controls include pneumatic valves and pneumatic alarms as follows: a breathing circuit integrity alarm for notifying the operator that an integrity condition has been detected; a power fail alarm for notifying the operator that the source of pressurized gas has a pressure below a selected source input valve; and pressure relief alarm for notifying the operator that the patient's airway is above the selected pressure relief value.

Abstract: The personal emergency breathing system includes a canister carrying a layered filtration unit, a mouthpiece, a hood, a cover and a lid at opposite ends. Upon removal of the cover, the mouthpiece and hood are deployed. By placing the mouthpiece in the user's mouth and donning the hood, the user may breathe filtered ambient air. At the opposite end of the canister is a demand valve having an oxygen supply line. Upon removal of the lid at the opposite end of the canister and coupling the supply line to an oxygen bottle, oxygen may be supplied the user, augmenting the supply of ambient filtered air. Thus, the user may clip the oxygen bottle along with the canister to his/her belt and escape from toxic gases and smoke-filled environments. The demand valve supplies oxygen to the user only upon inspiratory effort and closes upon exhalation, thereby extending a given supply of oxygen up to 150% as compared to a continuous supply of oxygen.

Abstract: An automatic resuscitation apparatus for administering a breathable gas to a patient that can be held in one hand, and containing the necessary valves and controls, and operable in automatic mode, demand mode, and manual mode, and having, a flow chamber for a breathable gas, a patient mask connector at an outlet of said flow chamber, a chamber valve within the flow chamber for permitting passage of breathable gas from the chamber to the mask connector, a exhaust for exhausting exhaled breath exteriorly of the flow chamber, a breathable gas supply to the flow chamber, a supply valve operable to provide an on-off control of the breathable gas supply, and, a timing valve responsive to flow of gas to the flow chamber, to move at predetermined intervals between on/off positions, the timing valve being connected to the supply valve, so as to procure on-off operation of the supply valve in timed relation to the timing valve.