Blood flow measuring apparatus

Details Blood flow measuring apparatus Blood flow measuring apparatus

A - Human Necessities

61

B

A61B 5/026 (2006.01) A61B 5/00 (2006.01) A61B 5/0424 (2006.01)

Patent

CA 2053115

ABSTRACT OF THE DISCLOSURE The blood flow measuring apparatus comprises at least three electrodes, namely, a measuring electrode, reference electrode and an active neutral electrode, which are implanted at a predetermined tissue region. The signals of the measuring electrode and the reference electrode are delivered by input lines to a current and voltage isolated differential amplifier, the output of which is connected with a central unit controlling further instruments. What is important for the measuring accuracy of the blood flow measuring apparatus is an opposite feedback of external spurious fields which couple-in spurious potentials into the tissue and the shields of the input lines of the measuring electrode, reference electrode and neutral electrode. Further probes can be provided as an aid for the central unit.

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