Analytical system for the determination of a component of a fluid
First Claim
1. An analytical system for measuring the concentration of a component, said system comprising:
- a test carrier having a test field and a metallic conducting layer associated with said test field, said metallic conducting layer lying parallel to the test field and being in thermal contact with the test field, the test field containing a reagent which reacts with said component to produce a measurable change in said test field, said change being accelerated by heat;
an induction heater having means for producing an alternating magnetic field, said magnetic field having a working area in which a said metallic conducting layer is inductively heated when located therein;
means for guiding the test carrier so that the metallic conducting layer is in the working area of the alternating magnetic field; and
an evaluating instrument for measuring a change in the test field after the test field is heated, said change being characteristic of the concentration of the component.
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Accused Products
Abstract
An analytical system for the determination of a component of a fluid, especially blood or urine, is disclosed. It comprises test carriers, which have at least one test field, and an evaluating instrument for the measurement of a characteristic change in the test field.
In order to achieve rapid and selective heating of individual test fields, especially in test carriers that are multiple-test strips, the corresponding test field has a metallic conducting layer, which runs parallel to the test field and is in thermal contact with it. The evaluating instrument has an induction heater. The guiding mechanism of the test carrier in the evaluating instrument is designed so that the metallic conducting layer, at least before the measurement, is in the working area of the alternating magnetic field emanating from the induction heater.
75 Citations
8 Claims
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1. An analytical system for measuring the concentration of a component, said system comprising:
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a test carrier having a test field and a metallic conducting layer associated with said test field, said metallic conducting layer lying parallel to the test field and being in thermal contact with the test field, the test field containing a reagent which reacts with said component to produce a measurable change in said test field, said change being accelerated by heat; an induction heater having means for producing an alternating magnetic field, said magnetic field having a working area in which a said metallic conducting layer is inductively heated when located therein; means for guiding the test carrier so that the metallic conducting layer is in the working area of the alternating magnetic field; and an evaluating instrument for measuring a change in the test field after the test field is heated, said change being characteristic of the concentration of the component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification