| 摘要 |
<p>A system ( 1 ) for metering and delivering a liquid medium, in particular for enteral nutrition in medical applications, comprises a storage container ( 3 ) having a certain volumetric capacity and a supply device ( 4 ) and a discharge device ( 5 ) for the medium, whereby the supply and discharge of the medium to and from the storage container ( 3 ) is effected by the force of gravity. A detecting device, e.g. in the form of a pair of spaced diode measuring devices ( 6, 7 ) serves for determining at least a lower and at least an upper filling level ( 8, 9 ) of the medium in the storage container ( 3 ) and for delivering appropriate detection signals. Controllable actuating organs ( 10, 11 ) serve for closing or opening the supply device ( 4 ) and the discharge device ( 5 ), whereby the detection signals from the detecting device ( 6, 7 ) are applicable to an internal or external control unit in order to deliver setting signals to the controllable actuating organs ( 10, 11 ) according to a given program sequence in dependence on the detection signals. The system enables enteral nutrients to be supplied to a patient with a precise volumetric dosage. It does not need a feed pump.</p> |
