Fluid viscoelastic test apparatus and method

Details Fluid viscoelastic test apparatus and method Fluid viscoelastic test apparatus and method

1989-09-29

1991-05-21

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Vapor pressure

G01N 1110, G01N 3349

Patent

active

050164694

ABSTRACT:
An instrument for testing the viscoelastic characteristics of fluids, such as blood, exhibits improved temperature regulation of the blood sample under test, includes probe drive circuitry to simplify calibration and signal conditioning, incorporates resonant frequency monitoring to detect mechanical noise disturbances, and provides automated analysis of a graphical signature, over time, of the viscoelastic characteristics of the blood sample, including a visual indication to the user of the activated clotting time period (ACT) and the rate of clot formation (RATE) of the blood sample under test, thereby improving the accuracy of the test results and simplifying operation of the instrument to permit its use by surgical personnel.

REFERENCES:
patent: 3741002 (1973-06-01), Simons
patent: 4026671 (1976-08-01), Simons et al.
patent: 4341111 (1982-07-01), Husar

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