| 摘要 |
A portable peak flow meter (10) for monitoring the expiratory flow rate of a user includes an in-line metering unit having a combination cover and handle. The metering unit, which has opposed mouthpiece and exit ends (14, 16), is of generally rectangular construction. A pair of opposed and hinged cover elements (24, 26) are pivotly mounted to the side walls of the metering unit, and pivot from a first position in which they embrace and cover the mouthpiece, to a second position perpendicular to the length of the metering unit in which they serve as a handle. The cover elements both maintain the mouthpiece in a sanitary condition when the unit is not in use and allows the unit to be held in a manner where the user's hand is distanced from the meter, thus preventing interference with operation of the unit.
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