TEST TAPE UNIT FOR BLOOD TESTS
First Claim
Patent Images
1. A test tape unit for testing blood, comprising:
- an analytical test tape;
a feed spool configured for dispensing unused test tape and a take-up spool configured for receiving used test tape; and
a tape guide adapted for positioning and exposing a section of the test tape at a measuring site, the tape guide comprising a planar support frame which holds the section of test tape at the measuring site flat, wherein the support frame comprises frame legs circumscribing a measuring opening which is free from optical elements.
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Abstract
The present invention provides a test tape unit suitable for testing blood sugar. The test tape unit comprises an analytical test tape, a feed spool for unwinding unused test tape, a take-up spool for winding used test tape, and a tape guide to expose a section of test tape at a measuring site for receiving an application of body fluid. The tape guide has a flat support frame which stretches the test tape at the measuring site and forms the border of a measuring opening which is kept free from optical elements for producing an optical measurement.
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Citations
56 Claims
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1. A test tape unit for testing blood, comprising:
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an analytical test tape;
a feed spool configured for dispensing unused test tape and a take-up spool configured for receiving used test tape; and
a tape guide adapted for positioning and exposing a section of the test tape at a measuring site, the tape guide comprising a planar support frame which holds the section of test tape at the measuring site flat, wherein the support frame comprises frame legs circumscribing a measuring opening which is free from optical elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A test system for optical testing of a body fluid sample, comprising:
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a housing;
a tape drive and an optical measuring unit disposed in the housing; and
a test tape unit removably receivable in the housing, comprising;
an analytical test tape;
a feed spool configured for dispensing unused test tape and a take-up spool configured for receiving used test tape; and
a tape guide adapted for positioning and exposing a section of the test tape at a measuring site, the tape guide comprising a planar support frame which holds the section of test tape at the measuring site flat, wherein the support frame comprises frame legs circumscribing a measuring opening which is free from optical elements. - View Dependent Claims (23, 24, 25)
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26. A method of using a test system of the type having a tape cassette including a test tape carrying a plurality of test elements and a measuring site having a measuring opening at which the test elements are analyzed, the method comprising:
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advancing a section of the test tape having a test element to the measuring site;
holding the section of the test tape flat and aligning the test element over the measuring opening;
applying a body fluid sample to the test element;
projecting light through the measuring opening onto the rear side of the section of the test tape and detecting light that is reflected back through the measuring opening, wherein the projected and reflected light is passed through the measuring opening without interaction with or interference from optical components; and
correlating the detected light to presence or concentration of an analyte in the body fluid sample. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A test system for analyzing analytical test tape to determine presence or concentration of a substance in a body fluid, comprising:
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a tape guide configured to guide and hold test tape as it is advanced during use of the unit; and
the tape guide comprising a measuring site at which test elements of the test tape are evaluated, the measuring site comprising a planar support bordering a measuring opening that is free of optical elements, the planar support configured to hold a section of the test tape flat and the measuring opening configured to allow light to pass through the opening without interaction with or interference from optical components. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification