Device for the evaluation of a flat test carrier for the analytical determination of components of body fluids
First Claim
1. The combination of a test carrier having a test field and a device for the evaluation of said test carrier for the analytical determination of components of body fluids, comprising:
- a test carrier having a test field; and
a device for the evaluation of said test carrier for the analytical determination of components of body bluids comprising;
a tempering device and a regulating unit, the tempering device including at least one heating and measurement unit, said at least one heating and measurement unit having a heating surface which can be homogeneously heated with at least one resistance heating element and which can be pressed flatly against the test carrier in the region of the test fieldutilized for the evaluation;
at least one resistance heating element having at least one first part arranged in close proximity to the heating surface;
said at least one first part having at least one portion thereof which serves as temperature measurement section, arranged in close proximity to the heating surface and comprising a material with a temperature-dependent electrical resistance to form at least one combined heating and temperature measuring element; and
said at least one heating and measurement unit including a flat substrate and said at least one resistance heating element including resistance strips carried on a first surface of the substrate, the substrate comprising said heating surface, said heating surface being at least substantially as large as the test field of the test carrier used for the evaluation, the resistance strips being so dimensioned and distributed that there is obtained a uniform distribution of the electrical power density on said first substrate surface, at least a part of the resistance strips forming said at least one combined heating and temperature measuring element;
said at least one combined heating and temperature measuring element being associated with said regulating unit so that the electrical resistance of the temperature measurement section is used for the regulation of the temperature of the heating and measurement unit by means of the regulating unit.
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0 Petitions
Accused Products
Abstract
The present invention provides a device for the evaluation of a flat test carrier for the analytical determination of components of body fluids, said device having a tempering device and a regulating unit, the tempering device including a heating and measurement unit which can be pressed flatly against the test carrier in the region of its reference surface utilized for the evaluation and having a heating surface, wherein the heating and measurement unit has a heating surface which can be homogeneously heated with at least one resistance heating element, at least one resistance heating element is associated at least partly in close proximity to the heating surface, at least one part, serving as temperature measurement section, of the part of the resistance heating element arranged in the neighborhood of the heating surface consisting of a material with a temperature-dependent electrical resistance and the electrical resistance of the temperature measurement section is used for the regulation of the temperature of the heating and measurement unit by means of the regulating unit so that a part of the heating element simultaneously serves as temperature measurement element.
28 Citations
8 Claims
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1. The combination of a test carrier having a test field and a device for the evaluation of said test carrier for the analytical determination of components of body fluids, comprising:
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a test carrier having a test field; and a device for the evaluation of said test carrier for the analytical determination of components of body bluids comprising; a tempering device and a regulating unit, the tempering device including at least one heating and measurement unit, said at least one heating and measurement unit having a heating surface which can be homogeneously heated with at least one resistance heating element and which can be pressed flatly against the test carrier in the region of the test fieldutilized for the evaluation; at least one resistance heating element having at least one first part arranged in close proximity to the heating surface; said at least one first part having at least one portion thereof which serves as temperature measurement section, arranged in close proximity to the heating surface and comprising a material with a temperature-dependent electrical resistance to form at least one combined heating and temperature measuring element; and said at least one heating and measurement unit including a flat substrate and said at least one resistance heating element including resistance strips carried on a first surface of the substrate, the substrate comprising said heating surface, said heating surface being at least substantially as large as the test field of the test carrier used for the evaluation, the resistance strips being so dimensioned and distributed that there is obtained a uniform distribution of the electrical power density on said first substrate surface, at least a part of the resistance strips forming said at least one combined heating and temperature measuring element; said at least one combined heating and temperature measuring element being associated with said regulating unit so that the electrical resistance of the temperature measurement section is used for the regulation of the temperature of the heating and measurement unit by means of the regulating unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification