Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1995-09-22
1997-08-26
Lewis, Aaron J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820128, A62B 902
Patent
active
056601727
ABSTRACT:
An auxiliary breathing apparatus comprising, in accordance with a preferred embodiment, an interface assembly removably interposed and coupled between a compressed gas source and a mouthpiece. The interface assembly includes a pair of vertically-opposed actuators pivotally mounted relative to a valve remotely-located from the compressed gas source. The vertically-opposed actuators extend partially through the interface assembly and partially through the mouthpiece for receipt by a user's teeth. The remotely-located valve connects to a body portion having an insert which receives the remotely-located valve and places it into fluid communication with the compressed gas source. A valve actuator, residing within the insert and having a bore, depresses a valve stem of a source valve which extends partially into the insert at one end and partially into the compressed gas source at an opposite end. In accordance with a preferred method of the present invention, the vertically-opposed actuators enable a user to continually control the release of breathable gas from the remotely-located valve and, hence, the compressed gas source by the application of biting force to only one of the actuators. By varying the mount of biting force, the user continuously controls the quantity of breathable gas provided to the mouthpiece for inhalation by the user. The valve actuator and its bore, acting in cooperation with a plurality of bores defined by the insert, reduces the pressure and velocity of the breathable gas supplied by the compressed gas source to levels acceptable for human interface and consumption without employing a diaphragm-type regulator. Upon exhalation by the user, exhaust gases are directed from the mouthpiece and into the surrounding environment by a plurality of exhaust ports having exhaust flaps which flex away from the exhaust ports to "open" the exhaust ports and, thereby enable the release of the exhaust gases into the environment.
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Coursey R. Stevan
Lewis Aaron J.
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