Signals and indicators – Indicators – Fluid flow
Reexamination Certificate
2006-11-14
2010-06-08
Smith, R. A. (Department: 2841)
Signals and indicators
Indicators
Fluid flow
C116S264000, C116S112000, C128S205230
Reexamination Certificate
active
07730847
ABSTRACT:
A personal gas flow indicator is disclosed in which a flow indicator is interposed between the proximal end of a gas delivery cannula that conducts breathing-gas from a breathing-gas source to an airway interface device (AID) for introducing the breathing-gas into the airway of an patient. By having the gas flow indicator positioned at the proximal end of the gas delivery cannula, the patient or some other person in visual contact with the patient can easily determine whether or not breathing-gas is flowing through the gas delivery cannula. The flow indicator is sufficiently lightweight that it can be worn by the patient. It is both disposable and portable and can be easily retrofit into existing-gas delivery systems. The flow indicator can be incorporated into an AID, into a gas delivery cannula, or it can be easily retrofit into one-piece gas delivery cannulas.
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Redd Iris H.
Redd John L.
Courson Tania C
Smith R. A.
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