Hand-held test meter with test strip simulation passive circuit block

Patent metadata

Field	Value
Publication number	US-9759713-B2
Application number	US-201414446485-A
Country	US
Kind code	B2
Filing date	Jul 30, 2014
Priority date	Jul 30, 2014
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A hand-held test meter for use with an electrochemical-based analytical test strip in the determination of an analyte in a bodily fluid sample includes a housing, a micro-controller disposed in the housing, a test strip simulation passive circuit block disposed in the housing, and a strip port connector (“SPC”) configured to operationally receive an electrochemical-based analytical test. The test strip simulation passive circuit block is in electrical communication with the SPC and the SPC is configured in electrical communication with the micro-controller. In addition, the test strip simulation passive circuit block is configured to simulate insertion of an electrochemical-based analytical test strip into the SPC and also to simulate application of a bodily fluid sample to an electrochemical-based analytical test strip inserted into the SPC by presenting one or both of (i) an alternating current (AC) load to SPC; and (ii) a direct current (DC) load to the SPC.

First claim

What is claimed is:

1. A hand-held test meter for use with an electrochemical-based analytical test strip in the determination of an analyte in a bodily fluid sample, the hand-held test meter comprising:
a housing;
a micro-controller disposed in the housing;
a test strip simulation passive circuit block disposed in the housing; and
a strip port connector configured to operationally receive an electrochemical-based analytical test strip;
wherein the test strip simulation passive circuit block is in electrical communication with the strip port connector; and
wherein the test strip simulation passive circuit block is configured to simulate at least one of insertion of an electrochemical-based analytical test strip into the strip port connector and application of a bodily fluid sample to an electrochemical-based analytical test strip inserted into the strip port connector by presenting at least one of:
an alternating current (AC) load to the strip port connector; and
a direct current (DC) load to the strip port connector; and

wherein strip port connector is configured in electrical communication with the micro-controller.

2. The hand-held test meter of claim 1 wherein the test strip simulation passive circuit block includes:
at least one switch; and
at least one passive circuit component;

and wherein the a strip port connector includes at least:
a first electrical contact; and
a second electrical contact;
wherein the test strip simulation passive circuit block is in electrical communication with the first electrical contact and second electrical contact when the at least one electrical switch is in a closed configuration; and
wherein the test strip simulation passive circuit block is configured to simulate insertion of an electrochemical-based analytical test strip into the strip port connector and to simulate application of a bodily fluid sample to an electrochemical-based analytical test strip inserted into the strip port connector by providing at least one of:
an alternating current (AC) load to the first electrical contact and the second electrical contact upon closing of the at least one switch; and
a direct current (DC) load to the first electrical contact and second electrical contact upon closing of the at least one switch;

wherein the test strip simulation passive circuit block is configured to be at least partially disconnected from the first electrical contact and second electrical contact upon opening of the at least one electrical switch; and
wherein the first electrical contact and second electrical contact are configured in electrical communication with the micro-controller.

3. The hand-held test meter of claim 1 wherein the ac load is presented using a parallel resistor and capacitor network of the test strip simulation passive circuit block.

4. The hand-held test meter of claim 1 wherein the at least one of an ac load and a dc load is presented using a resistor network of the test strip simulation passive circuit block.

5. The hand-held test meter of claim 1 wherein the dc load is presented using a parallel resistor/capacitor (RC) and offset resistor network.

6. The hand-held test meter of claim 1 wherein the test strip simulation passive circuit block includes at least one of a resistor, a capacitor and a Schottky diode.

7. The hand-held test meter of claim 1 wherein the test strip simulation passive circuit block includes a first switch and a second switch.

8. The hand-held test meter of claim 1 wherein the electrochemical-based analytical test strip is an electrochemical-based analytical test strip configured for the determination of glucose in a whole blood bodily fluid sample.

Assignees

• Lifescan Scotland Ltd

Inventors

• Elder David

Classifications

• G01N27/3274

  Corrective measures, e.g. error detection, compensation for temperature or hematocrit, calibration (coding of calibration information G01N33/48771) · CPC title

• G01N33/48785 Primary

  Electrical and electronic details of measuring devices for physical analysis of liquid biological material not specific to a particular test method, e.g. user interface or power supply · CPC title

• G01N27/3272

  Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels (optical biosensors G01N33/52) · CPC title

• G01N27/4163

  checking the operation of, or calibrating, the measuring apparatus (G01N27/3274, G01N27/4175 and G01N33/0006 take precedence) · CPC title

• G01N27/3273 Primary

  Devices therefor, e.g. test element readers, circuitry (details not specific to biochemical electrodes G01N33/4875) · CPC title