Hematocrit and liquid level sensor
AssigneeInstrumentation Laboratory Company
InventorsBrian Joseph Bosy, Josef Kerimo
Life of this patent
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Abstract
A fluid aspiration probe apparatus for automatic fluid testing equipment includes a pair of electrodes mounted on a distal probe tip. The electrodes are coupled to an impedance measurement apparatus via conductive pathways along the probe. The impedance measurements and probe tip height are monitored as the probe tip is lowered into a fluid sample. Boundaries between layers of fluid in the container are detected by recognizing sudden changes in the impedance measurements and heights of the boundaries are determined by tracking the position of probe tip when the sudden changes of impedance occur.
Claims20
A probe for determining one or more characteristics of a fluid, the probe comprising:
- a fluid aspiration probe comprising an internal bore configured to aspirate the fluid through the internal bore;
- a pair of insulated conductive paths adjacent to a surface of the fluid aspiration probe, the pair of insulated conductive paths extending to a proximal end of the fluid aspiration probe;
- and
- flexible tape adhered to the surface of the fluid aspiration probe, the flexible tape containing the pair of insulated conductive paths;
- wherein the pair of insulated conductive paths are substantially conformal with the surface of the fluid aspiration probe.
Dependencies are inferred from the claim text.