Platelet aggregation monitoring device

Details Platelet aggregation monitoring device Platelet aggregation monitoring device

G - Physics

01

N

73/164, 73/56

G01N 21/01 (2006.01) G01N 33/48 (2006.01)

Patent

CA 1045411

PLATELET AGGREGATION MONITORING DEVICE Abstract of the Disclosure A difference amplifier continuously generates a signal representing the difference between the optical densities of a platelet rich and a platelet poor sample of blood plasma. A variable gain amplifier multiplies the difference signal by a factor which is proportional to the initial difference signal. Electronic circuitry automatically determines the multiplying factor by comparing the initial difference signal to a pre- determined magnitude. The multiplied difference signal is con- tinuously recorded on a chart recorder and an optional filter circuit is provided for selectively filtering the difference signal.

254519

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