Hand-held test meter with integrated thermal channel

Patent metadata

Field	Value
Publication number	US-9841391-B2
Application number	US-201414480939-A
Country	US
Kind code	B2
Filing date	Sep 9, 2014
Priority date	Sep 9, 2014
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

A hand-held test meter includes an electrically and thermally insulating case (“ETIC”) with an outwardly facing surface, a test meter electrical component (“TMEC”) with a thermal contact portion disposed within the electrically-insulating case, and at least one thermal channel. The thermal channel includes a proximal contact portion with a proximal contact surface, a distal contact portion with a distal surface, and a channel portion connecting the proximal contact portion and the distal contact portion. The thermal channel is integrated with the ETIC such that the thermal channel extends through the ETIC from the outwardly facing surface and to the thermal contact portion of the TMEC. The extension is such that the proximal contact surface of the thermal channel is outside of the ETIC and the distal surface of the thermal channel is in contact with the thermal contact portion of the TMEC. The thermal channel is thermally conductive and electrically-insulating.

First claim

What is claimed is:

1. A hand-held test meter comprising:
an electrically and thermally insulating case with:
an outwardly facing surface;

at least one test meter electrical component with a thermal contact portion disposed within the electrically-insulating case; and
at least one thermal channel formed of a rigid thermoplastic material doped with thermally-conductive, electrically-insulating micro-particles or nano-particles, the at least one thermal channel includes:
a proximal contact portion with a proximal contact surface;
a distal contact portion with a distal surface, and
a channel portion connecting the proximal contact portion and the distal contact portion;

wherein the at least one thermal channel is integrated with the electrically and thermally insulating case such that the thermal channel extends through the electrically and thermally insulating case from the outwardly facing surface and to the thermal contact portion of the test meter electrical component such that the proximal contact surface is outside of the electrically and thermally insulating plastic case and the distal surface is in contact with the thermal contact portion of the test meter electrical component; and
wherein the thermal channel is thermally conductive and electrically-insulating.

2. The hand-held test meter of claim 1 wherein the hand-held test meter is configured for the determination of an analyte in a bodily fluid sample.

3. The hand-held test meter of claim 2 wherein the analyte is glucose and the bodily fluid sample is a whole blood sample.

4. The hand-held test meter of claim 1 wherein the electrically and thermally insulating case has a thermal conductivity of less than approximately 0.1 W/mK and the thermal channel has a thermal conductivity in the range of approximately 1.0 W/mK to 20 W/mK.

5. The hand-held test meter of claim 1 wherein the electrically and thermally insulating case has a thermal conductivity of approximately 0.1 W/mK and the thermal channel has a thermal conductivity greater than approximately 3.5 W/mK.

6. The hand-held test meter of claim 1 wherein the electrically and thermally insulating case is formed of a plastic material.

7. The hand-held test meter of claim 1 wherein the channel portion of the thermal channel has an essentially cylindrical configuration.

8. The hand-held test meter of claim 1 wherein the channel portion has a prismatic configuration.

9. The hand-held test meter of claim 1 wherein the distal contact portion of the thermal channel has a textured surface.

10. The hand-held test meter of claim 1 wherein the at least one micro-particles and nano-particles are formed of at least one of beryllium oxide, aluminum oxide, zinc oxide, aluminum nitride, and silicon dioxide.

11. The hand-held test meter of claim 1 wherein the electrically and thermally insulating case is formed of a plastic material.

12. The hand-held test meter of claim 1 wherein the at least one test meter electrical component is a micro-controller.

13. The hand-held test meter of claim 1 further including a printed circuit board (PCB) disposed within the electrically and thermally insulating case and
wherein the at least one electrical component is mounted on the PCB, and
wherein the thermal contact surface is at least one of a solder pad and a copper layer in contact with the electrical component.

Assignees

• Lifescan Scotland Ltd
• Lifesan Scotland Ltd

Inventors

• Guinan Eamon
• Nelson Jonathan
• Elder David

Classifications

• 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

• G01K7/427 Primary

  Temperature calculation based on spatial modeling, e.g. spatial inter- or extrapolation · CPC title

• G01N33/66

  involving blood sugars, e.g. galactose · CPC title

• G01N33/49

  Blood {(chemical methods for determining blood cell populations G01N33/5094; chemical analysis of blood groups or blood types G01N33/80)} · CPC title

• G01N25/18 Primary

  by investigating thermal conductivity (by calorimetry G01N25/20; by measuring change of resistance of an electrically-heated body G01N27/18) · CPC title