Apparatus and method for non invasively identifying components of liquid medium within a bag
First Claim
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1. An apparatus for non-invasively identifying components of an unknown liquid medium within an interior of a bag, the apparatus comprising:
- a source of electromagnetic radiation capable of directing electromagnetic radiation into the interior of the bag, the electromagnetic radiation capable of interaction with the components in the bag chamber and the bag;
detector means located outside the bag receiving the electromagnetic radiation after interaction with the components in the bag chamber and the wall portion of the bag and providing a signal indicative thereof; and
means for analyzing the signal to identify the components and the liquid medium in the bag.
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Abstract
An apparatus for measuring components in a liquid medium, in particular parenteral nutrients, with a flexible transparent bag. A spacer is utilized to fix or determine the optical path across the bag chamber and includes a passage for electromagnetic radiation of selected wavelengths. The source of electromagnetic radiation is capable of sending radiation into the bag chamber and to detector means which analyzes the radiation passed through or reflected from the components in the bag chamber.
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Citations
12 Claims
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1. An apparatus for non-invasively identifying components of an unknown liquid medium within an interior of a bag, the apparatus comprising:
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a source of electromagnetic radiation capable of directing electromagnetic radiation into the interior of the bag, the electromagnetic radiation capable of interaction with the components in the bag chamber and the bag; detector means located outside the bag receiving the electromagnetic radiation after interaction with the components in the bag chamber and the wall portion of the bag and providing a signal indicative thereof; and means for analyzing the signal to identify the components and the liquid medium in the bag. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for non-invasively identifying components of an unknown liquid medium with an interior of a bag, the method comprising the steps of:
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providing a source of electromagnetic radiation exterior to the bag; directing the electromagnetic radiation such that the electromagnetic radiation is passed through the interior of the bag; detecting the electromagnetic radiation exterior to the bag following interaction with the components in the interior of the bag; providing a signal indicative of the detected electromagnetic radiation; analyzing the signal; and identifying the components and the liquid medium in the interior of the bag. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification