HAND-HELD TEST METER WITH FLUID INGRESS DETECTION CIRCUIT
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United States of America Patent
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Issued Date -
Jan 26, 2017
app pub date -
Jul 22, 2015
filing date -
Jul 22, 2015
priority date (Note) -
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Abstract
A hand-held test meter (“HHTM”) for use with analytical test strip in the determination of an analyte in a bodily fluid sample includes a housing, a strip port connector disposed at least partially within the housing, a micro-controller disposed in the housing, a voltage supply disposed in the housing, a fluid ingress detection circuit block (“FRIDCB”) disposed in the housing and includes a paired signal and ground trace, and a ground-reference. A portion of the signal trace and ground trace are separated by a predetermined distance. The signal trace is electrically connected to the voltage supply and to the micro-controller and the ground trace is electrically connected to the ground-reference. With no ingress fluid, the signal trace is electrically isolated from the ground trace. The FRIDCB generates an output signal to the micro-controller that is dependent on fluid ingress into the meter housing, thus providing for detection of fluid ingress.
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