Test strip evaluating instrument for multiple test strips
First Claim
1. A test strip evaluating instrument for conducting tests on a plurality of elongated test strips, said instrument comprising:
- a transport and positioning means for transporting the test strips in a direction at generally right angles to a longitudinal extent of the test strips, from a test strip feed area along a transport path to a disposal area;
at least one measuring station having an optical measuring means disposed along said transport path for optically testing said test strips;
a disposable transport insert formed of a plastic material, said disposable transport insert completely covering a bottom portion of said transport path and having a plurality of spaced apart rails for slidably supporting the test strips, each of said plurality of rails extending in a direction which is generally parallel to a transport direction of said test strips and being formed as longitudinal ribs in said plastic material, wherein liquid from said test strips which contacts said disposable transport insert is prevented from contacting other areas of said instrument;
at least two rows of cam elements, each of said two rows of cam elements being aligned in said transport direction and being driven synchronously with each other in a periodically recurring movement path such that said two rows transport the test strips in a step-wise manner along said plurality of rails, wherein said two rows of cam elements engage the test strips from above and extend downwardly between adjacent ones of said plurality of rails;
a bearing means for supporting said transport insert, said bearing means having a support surface for supporting the transport insert in a central area of said transport insert which lies between said test strip feed area and said disposal area; and
a rigid contact-pressure means, having an underside against which the test strip is pressed elastically during measurement, provided at said measuring station, said rigid contact-pressure means being located at a predetermined distance from said optical measuring unit.
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Accused Products
Abstract
A test strip evaluating instrument is used for testing of multiple test strips, and has a transport and positioning device which transports the test strips at right angles to their longitudinal direction from a test strip feed area along a transport path to a disposal area. At least one measuring station with an optical measuring unit is arranged on the transport path. Rails, on which the test strips slide, run along the transport path. The test strips are transported in a step-wise manner by at least two rows of cam elements following one another in the transport direction, and these two rows of cam elements move synchronously with one another in a periodically recurring movement path. The handling of the test strips is facilitated without impairment of the measuring accuracy by the fact that the rails are longitudinally aligned as thin ribs in a disposable transport insert made of a thin plastic material, in which the cam elements engage from above between adjacent pairs of the rails of the transport insert, and in which a bearing element is provided for the tranport insert which supports the transport insert with a support surface in a central area lying between the test strip feed area and the disposal area. A rigid contact-pressure element is also provided, against which the test strip is pressed elastically from below during the measurement, and this contact-pressure element is disposed at the measuring station at a predetermined distance from the optical measuring unit.
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Citations
13 Claims
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1. A test strip evaluating instrument for conducting tests on a plurality of elongated test strips, said instrument comprising:
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a transport and positioning means for transporting the test strips in a direction at generally right angles to a longitudinal extent of the test strips, from a test strip feed area along a transport path to a disposal area; at least one measuring station having an optical measuring means disposed along said transport path for optically testing said test strips; a disposable transport insert formed of a plastic material, said disposable transport insert completely covering a bottom portion of said transport path and having a plurality of spaced apart rails for slidably supporting the test strips, each of said plurality of rails extending in a direction which is generally parallel to a transport direction of said test strips and being formed as longitudinal ribs in said plastic material, wherein liquid from said test strips which contacts said disposable transport insert is prevented from contacting other areas of said instrument; at least two rows of cam elements, each of said two rows of cam elements being aligned in said transport direction and being driven synchronously with each other in a periodically recurring movement path such that said two rows transport the test strips in a step-wise manner along said plurality of rails, wherein said two rows of cam elements engage the test strips from above and extend downwardly between adjacent ones of said plurality of rails; a bearing means for supporting said transport insert, said bearing means having a support surface for supporting the transport insert in a central area of said transport insert which lies between said test strip feed area and said disposal area; and a rigid contact-pressure means, having an underside against which the test strip is pressed elastically during measurement, provided at said measuring station, said rigid contact-pressure means being located at a predetermined distance from said optical measuring unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification