Diagnostic instrument with movable electrode mounting member and methods for detecting analytes
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United States of America Patent
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Oct 14, 2008
Grant Date -
Jul 8, 2004
app pub date -
Jan 8, 2002
filing date -
Jan 8, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An instrument (A) detects in a sample the presence of an analyte. The sample includes electrically readable particles (126) with an agent attached thereto that binds with the analyte or is an analog of the analyte. The instrument includes a port for the sample and a pair of electrodes (25, 30), one of which has a surface portion (30a) with an agent thereat that binds with the analyte or is an analog of the analyte. The electrodes have a first position where they are separated a sufficient distance apart to enable the sample to move between the electrodes and a second position where the electrodes are in close proximity. A detection circuit, including the electrodes, has a first state when the analyte is absent and a second state when the analyte is present. A signaling device provides an indication of the state of the detection circuit.
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