Calibrant infusion fluid source preparation
First Claim
1. A method for preparing a calibrant infusion fluid source, the method comprising:
- providing a calibrant infusion fluid source that includes a saline solution;
determining content weight in the calibrant infusion fluid source;
adding a predetermined volume of a predetermined glucose concentrate into the calibrant infusion fluid source; and
determining a concentration of glucose in the calibrant infusion fluid source based on the content weight in the calibrant infusion fluid source and the predetermined volume of the predetermined glucose concentrate,wherein a calibration procedure ensues proximate in time to adding the predetermined volume of the predetermined glucose concentrate into the calibrant infusion fluid source.
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Accused Products
Abstract
Methods and systems for preparation of calibrant infusion fluid sources are disclosed. In one embodiment, a precise volume of glucose is injected into a saline-solution filled calibrant infusion fluid source proximate in time to conducting a calibration procedure. The glucose concentration in the calibrant infusion fluid source is subsequently calculated based on the measured weight of the saline-solution, as determined prior to glucose injection, and the volume of glucose injected. This method provides a highly accurate and convenient manner for use in a hospital environment, for example, with an intravenous blood glucose sensor system. In another embodiment, a premixed calibrant infusion fluid source is provided that includes saline solution and a predetermined concentration of glucose. In such embodiments, shelf life problems related to water evaporation are mitigated by hermetically covering or otherwise hermetically containing the calibrant infusion fluid source up until the point of use.
14 Citations
20 Claims
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1. A method for preparing a calibrant infusion fluid source, the method comprising:
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providing a calibrant infusion fluid source that includes a saline solution; determining content weight in the calibrant infusion fluid source; adding a predetermined volume of a predetermined glucose concentrate into the calibrant infusion fluid source; and determining a concentration of glucose in the calibrant infusion fluid source based on the content weight in the calibrant infusion fluid source and the predetermined volume of the predetermined glucose concentrate, wherein a calibration procedure ensues proximate in time to adding the predetermined volume of the predetermined glucose concentrate into the calibrant infusion fluid source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for preparing a calibrant infusion fluid source, the system comprising:
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a calibrant infusion fluid source including a saline solution; a weighing device operable to determine a weight of the calibrant infusion fluid source a syringe operable to inject a predetermined volume of a predetermined glucose concentrate into the calibrant infusion fluid source; and a calculation device operable to calculate a concentration of glucose in the calibrant infusion fluid source based on a content weight in the calibrant infusion fluid source and the predetermined volume of the predetermined glucose concentrate, wherein a calibration procedure ensues proximate in time to injecting the predetermined volume of the predetermined glucose concentrate into the calibrant infusion fluid source. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification