Surgery – Diagnostic testing – Erythrocyte sedimentation rate/viscosity
Reexamination Certificate
2007-04-24
2007-04-24
Jaworski, Francis J. (Department: 3768)
Surgery
Diagnostic testing
Erythrocyte sedimentation rate/viscosity
C600S438000, C422S073000
Reexamination Certificate
active
10264077
ABSTRACT:
An apparatus and method for determining the density and fluid-type of a fluid flowing in a capillary tube, the velocity and viscosity of a blood sample flowing in a capillary tube, the erythrocyte sedimentation rate (ESR) of a blood sample after flow has been brought to an abrupt stop in a capillary tube, and/or the zeta sedimentation rate (ZSR) of a blood sample after flow has been brought to an abrupt stop in a capillary tube. These measurements are accomplished by directing a waveform pulse, such as an ultrasound pulse, at a pre-determined frequency transversely across the capillary tube and sample fluid, and by determining the flight of time of the pulse through the capillary tube and sample fluid and/or the Doppler shift of the echo signals reflecting off cells moving forwardly or transversely within a flowing, or stationary, blood sample.
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Alter Mitchell E.
Coulter International Corp.
Howson and Howson
Jaworski Francis J.
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