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US 8,894,831 B2Granted
Printed memory on strip
AssigneeRoche Diagnostics Operations, Inc.
InventorsMichael J. Celentano, Herbert Harttig, Brian A. Wittman
Life of this patent
Estimating the term…
Abstract
A test strip for analyzing a biological fluid using a test meter includes a biosensor to sense the biological fluid. The test strip includes contacts to communicate with the test meter and conductors connected to the contacts. The test strip further includes a combination of diodes, resistors, and short circuits arranged in various ways between the conductors. The test strip stores data based on a number of connections severed between the diodes, the resistors, the short circuits, and the conductors. The test meter reads the data and communicates with the biosensor via the contacts.
Claims59
A test strip for analyzing a biological fluid using a test meter, the test strip comprising:
- a biosensor configured to sense the biological fluid, wherein the biosensor comprises a pair of conductors printed on the test strip to communicate with the test meter and a reagent deposited on the test strip to react with the biological fluid;
- first, second, and third contacts configured to communicate with the test meter, wherein at least two of the first, second, and third contacts are configured to communicate with the pair of conductors of the biosensor;
- first, second, and third conductors connected to the first, second, and third contacts, respectively, wherein at least two of the first, second, and third conductors are included in the pair of conductors of the biosensor;
- first and second diodes each having a first end connected to the first conductor and a second end connected to the second conductor at a first node so that the first diode is connected to the second diode in opposing polarity;
- third and fourth diodes each having a first end connected to the second conductor at the first node and a second end connected to the third conductor so that the third diode is connected to the fourth diode in opposing polarity;
- a first short circuit having (i) a first end connected to the first ends of the first and second diodes and (ii) a second end connected to the second ends of the first and second diodes;
- and
- a second short circuit having (i) a first end connected to the first ends of the third and fourth diodes and (ii) a second end connected to the second ends of the third and fourth diodes,
- wherein the test strip is configured to store data based on a first number of connections severed between (i) the first through fourth diodes and the first through third conductors and (ii) the first and second ends of the first and second short circuits.
6 more elements
A test strip for analyzing a biological fluid using a test meter, the test strip comprising:
- a biosensor configured to sense the biological fluid, wherein the biosensor comprises a pair of conductors printed on the test strip to communicate with the test meter and a reagent deposited on the test strip to react with the biological fluid;
- first, second, and third contacts configured to communicate with the test meter, wherein at least one of the first and third contacts are configured to communicate with the pair of conductors of the biosensor;
- first, second, and third conductors connected to the first, second, and third contacts, respectively, wherein at least one of the first and third conductors are included in the pair of conductors of the biosensor;
- first and second diodes each having a first end connected to the first conductor and a second end connected to the second conductor at a first node so that the first diode is connected to the second diode in opposing polarity;
- third and fourth diodes each having a first end connected to the second conductor at the first node and a second end connected to the third conductor so that the third diode is connected to the fourth diode in opposing polarity;
- a resistance having a first end connected to the first node, and a second end;
- fifth and sixth diodes each having a first end connected to the first conductor and a second end connected to the second end of the resistance at a second node so that the fifth diode is connected to the sixth diode in opposing polarity;
- and
- seventh and eighth diodes each having a first end connected to the second node and a second end connected to the third conductor so that the seventh diode is connected to the eighth diode in opposing polarity,
- wherein the test strip is configured to store data based on a first number of connections severed between the first through eighth diodes and the first through third conductors.
7 more elements
A test strip for analyzing a biological fluid using a test meter, the test strip comprising:
- a biosensor configured to sense the biological fluid, wherein the biosensor comprises a pair of conductors printed on the test strip to communicate with the test meter and a reagent deposited on the test strip to react with the biological fluid;
- first and second contacts configured to communicate with the test meter;
- first and second conductors connected to the first and second contacts, respectively;
- a first resistance having a first end connected to the first contact, and a second end;
- first and second diodes each having a first end connected to the second end of the first resistance and a second end connected to the second conductor at a first node so that the first diode is connected to the second diode in opposing polarity;
- a second resistance having a first end connected to the second end of the first resistance, and a second end;
- and
- third and fourth diodes each having a first end connected to the second end of the second resistance and a second end connected to the second conductor at a second node so that the third diode is connected to the fourth diode in opposing polarity,
- wherein the test strip is configured to store data based on a first number of connections severed between the first through fourth diodes and the first and second conductors.
6 more elements
A test strip for analyzing a biological fluid using a test meter, the test strip comprising:
- a biosensor configured to sense the biological fluid, wherein the biosensor comprises a pair of conductors printed on the test strip to communicate with the test meter and a reagent deposited on the test strip to react with the biological fluid;
- first and second contacts configured to communicate with the test meter;
- first and second conductors connected to the first and second contacts, respectively, wherein at least one of the first and second conductors is different than the pair of conductors;
- and
- a first plurality of diodes each having a first end connected to the first contact and a second end connected to the second contact,
- wherein junction areas of the first plurality of diodes are scaled according to a binary code, and
- wherein the test strip is configured to store data based on a first number of connections severed between the first plurality of diodes and the first and second conductors.
4 more elements
A test strip for analyzing a biological fluid using a test meter, the test strip comprising:
- a biosensor configured to sense the biological fluid, wherein the biosensor comprises a pair of conductors printed on the test strip to communicate with the test meter and a reagent deposited on the test strip to react with the biological fluid;
- first and second contacts configured to communicate with the test meter;
- first and second conductors connected to the first and second contacts, respectively;
- a first plurality of diodes each having a first end connected to the first contact and a second end, wherein junction areas of the first plurality of diodes are scaled according to a binary code;
- and
- a first plurality of resistances each having a first end connected to the second end of a respective one of the first plurality of diodes and a second end connected to the second contact,
- wherein the test strip is configured to store data based on a first number of connections severed between the first plurality of resistances and the first and second conductors.
4 more elements
A system for analyzing biological fluids comprising:
- a test strip comprising a biosensor to sense a biological fluid and a plurality of diodes that are connected to a plurality of contacts on the test strip and that are arranged in a network representing one of a plurality of states based on whether the diodes are short circuited, open circuited, or neither short circuited nor open circuited;
- and
- a mobile meter configured to
- supply excitation to a plurality of contacts on the test strip and measure response through the plurality of contacts,
- differentiate a plurality of voltage or current levels representing the plurality of states, and
- identify the one of the plurality of states represented by the network of diodes based on the measured current or voltage.
3 more elements
A system comprising:
- a test strip comprising a biosensor to sense a biological fluid and a plurality of diodes that are connected to a plurality of contacts on the test strip and that are arranged in a network representing one of a plurality of states based on whether the diodes are open circuited, wherein junction areas of the diodes are scaled to a binary code;
- and
- a mobile meter configured to supply excitation to a plurality of contacts on the test strip and measure response through the plurality of contacts, wherein the response is distinct for each diode or a combination of diodes open circuited.
A system comprising:
- a test strip comprising a biosensor to sense a biological fluid and a plurality of diodes and a plurality of resistors that are connected to a plurality of contacts on the test strip and that are arranged in a network representing one of a plurality of states based on whether the diodes are short circuited, open circuited, or neither short circuited nor open circuited;
- and
- a mobile meter configured to supply excitation to a plurality of contacts on the test strip and measure response through the plurality of contacts, wherein the response is distinct for each diode or a combination of diodes open circuited.
Dependencies are inferred from the claim text.