Electrochemical biosensor test strip
First Claim
1. An electrochemical test strip comprising electrodes;
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Abstract
An electrochemical biosensor test strip with four new features. The test strip includes an indentation for tactile feel as to the location of the strips sample application port. The sample application port leads to a capillary test chamber, which includes a test reagent. The wet reagent includes from about 0.2% by weight to about 2% by weight polyethylene oxide from about 100 kilodaltons to about 900 kilodaltons mean molecular weight, which makes the dried reagent more hydrophilic and sturdier to strip processing steps, such as mechanical punching, and to mechanical manipulation by the test strip user. The roof of the capillary test chamber includes a transparent or translucent window which operates as a “fill to here” line, thereby identifying when enough test sample (a liquid sample, such as blood) has been added to the test chamber to accurately perform a test. The test strip may further include a notch located at the sample application port. The notch reduces a phenomenon called “dose hesitation”.
427 Citations
15 Claims
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1. An electrochemical test strip comprising electrodes;
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a reagent comprising reaction components appropriate for performing a test, and a dissolvable or suspendable film forming mixture including polyethylene oxide having a mean molecular weight from about 100 kilodaltons to about 900 kilodaltons, wherein the reagent is applied to the test strip in a wet form, and subsequently dried, and thereby adapted to be redissolved or resuspended upon addition of an aqueous test sample to the dried reagent. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electrochemical test strip comprising electrodes;
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a reagent comprising reaction components appropriate for performing a test and polyethylene oxide having a mean molecular weight from about 100 kilodaltons to about 900 kilodaltons, wherein the reagent is adapted to redissolve or resuspend upon addition of an aqueous test sample to the reagent. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification