Title :
A new method of measuring blood viscosity with a U-shaped scanning capillary-tube viscometer using a Casson model
Author :
Kim, Sangho ; Cho, Young I. ; Hogenauer, William N. ; Kensey, Kenneth R.
Author_Institution :
Dept. of Mech. Eng. & Mech., Drexel Univ., Philadelphia, PA, USA
Abstract :
The present study introduces a method to consider different surface tensions at two riser tubes for the viscosity measurements of fluids using a U-shaped scanning capillary-tube viscometer (SCTV). The accuracy and repeatability of the SCTV were demonstrated by comparing the viscosity results of distilled water obtained from the SCTV with the well-accepted reference data for water. Non-Newtonian viscosity of fresh human blood was measured at a body temperature of 37°C. The results demonstrate that whole blood viscosity can be measured over a range of shear rates in less than 2-3 min without any anticoagulants using disposable U-shaped capillary-tube sets
Keywords :
biomedical equipment; biomedical measurement; haemorheology; physiological models; surface tension; viscosity measurement; 2 to 3 min; 37 C; Casson model; anticoagulants; blood viscosity measurement method; body temperature; disposable U-shaped capillary-tube sets; distilled water; fresh human blood; medical measurement technique; nonNewtonian viscosity; riser tubes; shear rate; Blood; Charge coupled devices; Equations; Humans; Mechanical variables measurement; Rheology; Surface tension; Temperature; Testing; Viscosity;
Conference_Titel :
Bioengineering Conference, 2002. Proceedings of the IEEE 28th Annual Northeast
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-7419-3
DOI :
10.1109/NEBC.2002.999561
