Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2005-04-05
2005-04-05
Dawson, Glenn K. (Department: 3731)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S202270, C128S912000, C128S204220, C600S532000
Reexamination Certificate
active
06874502
ABSTRACT:
A gas circuit has an outlet and an inlet. Circuit adapters are provided. An anesthesia breathing circuit has tubular breathing circuit hoses, a Y connector and a connecting elbow. The breathing circuit has an electronically conductive system of wires and contacts to form two unconnected parallel electric circuits. An endotracheal tube has a conductive strip. A capnograph has a sampling tube coupled to the breathing circuit. The capnograph is electrically coupled to the separate electric circuits. The capnograph begins an adjustable timer when the endotracheal connector completes the electrical circuit by connecting the endotracheal tube to the breathing circuit. The timer provides for the transmission of an alarm when the circuit had been completed and no carbon dioxide was detected in the breathing hoses within a predetermined amount of time. The timer also provides for the transmission of an alarm when the circuit had been completed and had been disconnected.
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Dawson Glenn K.
Dutkiewicz Edward P.
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