Title :
A Microprocessor-Based Two-Channel Thromboelastograph
Author :
Chen, Shoupu ; Thakor, Nitish V. ; Wagner, James W.
Author_Institution :
Department of Biomedical Engineering, Johns Hopkins School of Medicine
Abstract :
This paper presents a design for a digital thromboelastograph (TEG). The instrument design is based on the principle of a couette viscometer. The device measures shear elasticity of blood during clot formation. The recording mechanism comprises a two-channel light-beam deflection system and a recording system based on a charge-coupled-device (CCD) array. An 8-bit CMOS microprocessor (NSC800) supervises data acquisition from the CCD array. The two-channel system produces a record on a thermal printer allowing one to observe the time course of coagulation and simultaneously compare two different blood specimens.
Keywords :
Biomedical measurements; Blood; Charge coupled devices; Coagulation; Engine cylinders; Mirrors; Optical arrays; Optical recording; Viscosity; Wire; Animals; Blood Coagulation; Computers; Dogs; Heparin; Microcomputers; Thrombelastography;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.1986.325784
