Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2005-01-04
2005-01-04
Bennett, Henry (Department: 3743)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S204230, C128S204260
Reexamination Certificate
active
06837244
ABSTRACT:
A small oxygen enriching apparatus which can supply oxygen-enriched gas at high flow rate without imparting unnatural sensation to a user, as well as a controller and recording medium therefore. In step100, a judgment is made as to whether a flow rate set by use of a flow-rate setting unit47is equal to or less than a continuous base flow rate (2 liters/min). When the set flow rate is a low flow rate of not greater than 2 liters/min, breath-synchronized operation is not performed (continuous supply is to be performed), and therefore, in step110, oxygen-enriched gas is supplied continuously at the set flow rate. When the set flow rate is a high flow rate of greater than 2 liters/min, breath-synchronized operation is to be performed (supply during the inhalation period only of each breathing cycle), and therefore, in step120, oxygen-enriched gas is continuously supplied at the continuous base flow rate. In step140, in order to perform breath-synchronized operation, control for opening and closing an electromagnetic valve45is performed. That is, oxygen-enriched gas is supplied during the inhalation period only of each breathing cycle, and supply of oxygen-enriched gas is stopped during the exhalation period.
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Akiyama Junichi
Kojima Takahito
Yagi Hideaki
Bennett Henry
NGK Spark Plug Co. Ltd.
Ragonese Andrea M.
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