Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Gelling or coagulation
Patent
1991-04-10
1992-08-18
Williams, Hezron E.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Gelling or coagulation
G01N 1110, G01N 3349
Patent
active
051388723
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
Hein William E.
Roskos Joseph W.
Sienco, Inc.
Williams Hezron E.
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