Biosensor
DCFirst Claim
1. A disposable glucose biosensor which is insertable and removable from a device body, said disposable glucose sensor comprisingan upper plate, a lower plate, a space formed between the two plates for housing a sample therein, a layer for fixing the two plates together, an opening for admitting the sample at a first end of the biosensor, a working electrode, a counter electrode fixed relative to the working electrode, the working electrode having oxidoreductase thereon, the lower plate including an insulating base having the working and counter electrodes thereon, and a sensor insertion signal terminal also formed thereon at an opposite end to the first end for interconnecting, upon insertion of the biosensor into the device body, two input terminals of the device body to allow power to flow between the two input terminals through the sensor insertion signal terminal and to the working electrode and said sensor insertion signal terminal being located with output terminal extensions of the working and counter electrodes also at said opposite end and being electrically insulated from the working and counter electrodes while being separated from the space for housing the sample.
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Accused Products
Abstract
A biosensor comprises a space part for sucking and housing a sample formed of two upper and lower plates, the two plates being stuck together by an adhesive layer, the space part for sucking and housing the sample being constituted so as to be partially opened in the peripheral part and partially closed by the adhesive layer, and has a working electrode having at least glucose oxidase immobilized thereon and a counter electrode on the same plane of the plate.
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Citations
31 Claims
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1. A disposable glucose biosensor which is insertable and removable from a device body, said disposable glucose sensor comprising
an upper plate, a lower plate, a space formed between the two plates for housing a sample therein, a layer for fixing the two plates together, an opening for admitting the sample at a first end of the biosensor, a working electrode, a counter electrode fixed relative to the working electrode, the working electrode having oxidoreductase thereon, the lower plate including an insulating base having the working and counter electrodes thereon, and a sensor insertion signal terminal also formed thereon at an opposite end to the first end for interconnecting, upon insertion of the biosensor into the device body, two input terminals of the device body to allow power to flow between the two input terminals through the sensor insertion signal terminal and to the working electrode and said sensor insertion signal terminal being located with output terminal extensions of the working and counter electrodes also at said opposite end and being electrically insulated from the working and counter electrodes while being separated from the space for housing the sample.
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18. A biosensor which is insertable and removable from a device body, said biosensor comprising
an upper electrically insulating base, a lower electrically insulating base, a space formed between the two bases for housing a sample therein, a layer for fixing the two bases together, a sample opening at a peripheral part of a first end of the biosensor, a working electrode and a counter electrode, the working electrode having oxidoreductase and a mediator thereon, and a sensor insertion signal terminal at an opposite end to the first end for interconnecting, upon insertion of the biosensor into the device body, two input terminals of the device body to allow power to flow between the two input terminals through the sensor insertion signal terminal and to the working electrode and said sensor insertion signal terminal being located with output terminal extensions of the working and counter electrodes also at said opposite end wherein the working and counter electrodes, and the sensor insertion signal terminal, comprise carbon and are formed in a mutually electrically insulated state while the sensor insertion signal terminal is separated from the space for housing the sample.
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27. A disposable glucose biosensor which is insertable and removable from a device body, said disposable glucose sensor comprising
an upper plate, a lower plate and a space formed between the two plates for housing a sample therein, a layer for fixing the two plates together, a sample opening at a first end edge of the biosensor, a working electrode and a counter electrode formed on the lower plate, each electrode having an output terminal extension adjacent a second end edge of the base opposite the first edge, and the working electrode having a mediator and one of glucose oxidase and glucose dehydrogenase thereon, the lower plate comprising an insulating base, and a sensor insertion signal terminal for interconnecting, upon insertion of the biosensor into the device body, two input terminals of the device body to allow power to flow between the two input terminals through the sensor insertion signal terminal and to the working electrode and said sensor insertion signal terminal being located adjacent said second end edge, and being electrically insulated from the working and counter electrodes while being separated from the space for housing the sample.
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28. A disposable glucose biosensor comprising:
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an upper plate, a lower plate comprising a rectangular insulating base having end edges and side edges, a sample housing space formed between the two plates, a layer for fixing the two plates together, a sample opening at a first end edge of the biosensor, a working electrode formed on the base and positioned to be exposed to the sample housing space, a counter electrode formed on the base and positioned to be exposed to the sample housing space, each of the two plates lacking an air vent or hole for connecting to the space, the working electrode and counter electrode having oxidoreductase and a mediator thereon, a working electrode output terminal leading from the working electrode along a length of the base, parallel to the side edges, so that the working electrode and the working electrode output terminal form an L-shaped conductive area on the base, a counter electrode output terminal leading from the counter electrode along a length of the base, parallel to the side edges, so that the counter electrode and the counter electrode output terminal form an L-shaped conductive area on the base, and an insertion judging electrode formed adjacent a second end edge of the base and electrically insulated from but adjacent each of the counter and working electrode output terminals while being separated from the sample housing space. - View Dependent Claims (29)
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30. A disposable glucose biosensor which is insertable and removable from a device body, said disposable glucose sensor comprising
an upper plate, a lower plate, a space formed between the two plates for housing a sample therein, a layer for fixing the two plates together, an opening for admitting the sample at a first end of the biosensor, a working electrode, a counter electrode fixed relative to the working electrode, the working electrode having oxidoreductase thereon, the lower plate including an insulating base having the working and counter electrodes thereon, and a sensor insertion signal terminal also formed thereon at an opposite end to the first end for interconnecting, upon insertion of the biosensor into the device body, two input terminals of the device body to allow power to flow between the two input terminals through the sensor insertion signal terminal and to the working electrode and said sensor insertion signal terminal being located adjacent to output terminal extensions of the working and counter electrodes and being electrically insulated from the working and counter electrodes while being separated from the space for housing the sample.
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31. In combination, a disposable glucose biosensor which is insertable and removable from a device body,
said disposable glucose sensor including an upper plate, a lower plate, a space formed between the two plates for housing a sample therein, a layer for fixing the two plates together, an opening for admitting the sample at a first end of the biosensor, a working electrode, a counter electrode fixed relative to the working electrode, the working electrode having oxidoreductase thereon, the lower plate including an insulating base having the working and counter electrodes thereon, and a sensor insertion signal terminal also formed thereon at an opposite end to the first end for interconnecting, upon insertion of the biosensor into the device body, two input terminals of the device body to allow power to flow between the two input terminals through the sensor insertion signal terminal and to the working electrode and said sensor insertion signal terminal being electrically insulated from output terminal extensions of the working and counter electrodes while being separated from the space for housing the sample.
Specification