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On the response of a blood coagulation sensor

L. THEODORAKIS1, E. PAPADOPOULOS1, S. KATSARAGAKIS2, C. S. KARAGIANNI3, E. HRISTOFOROU4,5,*

Affiliation

  1. School of Mechanical Engineering, National Technical University of Athens, Zografou Campus, Athens, 15780, Greece
  2. Athens Medical School, University of Athens, Surgical Intensive Care Unit, 1st Department of Propaedeutic Surgery, Hippocratio Hospital, 114 Queen Sofia Ave, Athens, 11525, Greece
  3. School of Chemical Engineering, National Technical University of Athens, Zografou Campus, Athens, 15780, Greece
  4. School of Mining and Metallurgy Engineering, National Technical University of Athens, Zografou Campus, Athens, 15780, Greece
  5. Laboratory of Physical Metallurgy, School of Mining and Metallurgy Engineering, National Technical University of Athens, Zografou Campus, Athens 15780, Greece

Abstract

This paper focuses on results of a low cost magnetoelastic sensor able to measure coagulation time of fresh whole blood samples, using the properties of amorphous ribbons in an inductive arrangement. The results of the proposed sensing technique in terms of accuracy and repeatability are examined, thus proving the sensor’s ability to monitor the in vitro viscosity changes that the liquid blood sample undergoes, while it transforms into a fibrin clot. The sensor response is fitted by an exponential function, allowing fast coagulation measurement based on the calculation of the exponential response parameters, thus reducing the time required for blood coagulation measurements..

Keywords

Sensor, Blood coagulation, Magneto-classic properties.

Submitted at: March 13, 2008
Accepted at: May 14, 2008

Citation

L. THEODORAKIS, E. PAPADOPOULOS, S. KATSARAGAKIS, C. S. KARAGIANNI, E. HRISTOFOROU, On the response of a blood coagulation sensor, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 5, pp. 1282-1289 (2008)