Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1988-05-13
1990-02-06
Burr, Edgar S.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820524, 12820512, 12820511, A62B 902, A61M 1608, A61M 1620
Patent
active
048981672
ABSTRACT:
The system includes a remote variable volume bellows that is pumped by the rescuers weight, a suction collection option, an oxygen enrichment venturi valve, and a face mask AIDS Protector Valve that is opened and closed by the rescuer's hand. The system, in its normal configuration, allows for a rescuer to pump ventilation air through an air delivery tube into a valve and through the valve into the face mask and lungs of a victim. The pump is a variable volume spring loaded bellows that works for either an infant, child or adult. It can utilize a venturi tube oxygen connector that insures that maximum supplemental oxygen is fed into the air delivery tube. It also has a pressure relief valve to insure that excess pressure is not placed on the victims lungs. When ventilating, an air delivery tube connects to a valve which is opened or closed by the rescuer placing a hand over the exhaust port. This valve can be used by itself, but it has optional inserts for improved performance. One insert is spring loaded and it opens and closes over the air input port to insure that fluids and exhaust air from the victim do not go back into the fresh air line toward the bellows. Another option has separate internal fresh air and exhaust air chambers to ensure that fresh air does not mix with bad air before reaching the face mask. By injecting fresh air and leaving the exhaust port momentarily open, this latter insert can effectively be used to purge bad/toxic air from a face mask prior to the closing of the exhaust port and full ventilation. This bellows and valve system allows a rescuer to easily perform two person CPR on a patient without having fatigue or mouth and lung contact with the victim. The bellows system has a valve system at the normal air input port that can be set to convert the bellows into sucking in air through the air delivery tube. When this tube is attached to a suction fluid collection container the bellows acts as a source of vacuum and allows removal of fluid from a patient.
REFERENCES:
patent: 1202125 (1916-10-01), Tullar
patent: 2073192 (1937-03-01), Connell
patent: 2428451 (1947-10-01), Emerson
patent: 2969789 (1961-01-01), Morch
patent: 4297999 (1981-11-01), Kitrell
patent: 4354520 (1982-10-01), Easley, Jr.
patent: 4655213 (1987-04-01), Rapoport et al.
Pierce Richard S.
Van Leeuwen Willem J.
Asher Kimberly
Burr Edgar S.
Pakam Data Systems Inc.
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