Apparatus for determining substances contained in a body fluid
First Claim
1. A diagnostic test strip for use in an analyzer for measuring analyte in a sample, said test strip comprising:
- an elongate body including a first end, a second end, and a hinged portion between said first and second ends, said first end being foldable over said second end, said first end and said second end each having an opening that is aligned with one another when said first end is folded over said second end; and
a single carrier layer means comprising a plurality of layers fixed in position without use of adhesives between said openings within said first end and said second end, said carrier layer means including a separating layer that when exposed to a whole blood sample excludes red blood cells from passing therethrough while allowing the liquid portion of the whole blood sample to pass therethrough,whereby a sample communicated to said carrier layer means is prevented from pooling within said carrier layer means.
3 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for the optoelectronic evaluation of test paper strips for use in the detection of certain analytes in blood or other body fluids. The test strip comprises an elongated plastic part including a hinged portion to allow a first portion to be folded over a second portion. A series of layers of test strips are disposed between the folded over portions of the test strip. The test strip is configured such that the chemistry layers are placed in contacting engagement with one another, but not compressing one another. A reflectance photometer is provided and includes various features, including a lot number reader wherein if the test strip does not match the memory module, a test is not performed, and the user is instructed to insert a correct memory module.
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Citations
20 Claims
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1. A diagnostic test strip for use in an analyzer for measuring analyte in a sample, said test strip comprising:
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an elongate body including a first end, a second end, and a hinged portion between said first and second ends, said first end being foldable over said second end, said first end and said second end each having an opening that is aligned with one another when said first end is folded over said second end; and a single carrier layer means comprising a plurality of layers fixed in position without use of adhesives between said openings within said first end and said second end, said carrier layer means including a separating layer that when exposed to a whole blood sample excludes red blood cells from passing therethrough while allowing the liquid portion of the whole blood sample to pass therethrough, whereby a sample communicated to said carrier layer means is prevented from pooling within said carrier layer means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A diagnostic test strip for use in an analyzer for measuring analyte in a sample, said test strip comprising:
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an elongate body including a first end, a second end, and a hinged portion between said first and second ends, said first end being foldable over said body, said first end and said second end each having an opening that are aligned when said first end is folded over said body; carrier layer means comprising a plurality of layers disposed adjacent each other and held together between the openings within said first end and said second end of said body without the use of an adhesive whereby the accuracy of measure analyte is increased, said carrier layer means including a separating layer which is treated with light metal salts to reduce red blood cells in the sample; and means holding said carrier layer means in a fixed position between said first end and said body whereby pooling of sample within said carrier layer means is prevented. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A diagnostic test strip for use in an analyzer for measuring analyte in a sample, said test strip comprising:
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an elongate body including a first end, a second end, and a hinged portion between said first and second ends, said first end being foldable over said body, said first end and said second end each having an opening that are aligned with one another when said first end is folded over said body; carrier layer means comprising a plurality of layers disposed adjacent each other and held together between the openings within said first end and said second end of said body without the use of an adhesive whereby the accuracy of measured analyte is increased, and means holding said carrier layer means in a fixed position between said first end and said body, said first end folding over said carrier layer means and locking to said body causing the layers of said carrier layer means to be in adjacent contact without adhesives thus effecting efficient separation of red blood cells from plasma in whole blood samples and whereby pooling of sample within said carrier layer means is prevented.
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Specification