Title :
Hydraulic analyzer for catheter-transducer systems
Author :
Martinez, R.J. ; Felice, Carmelo Jose ; Valentinuzzi, Max E.
Author_Institution :
Lab. de Bioingenieria, Univ. Nacional de Tucuman, Argentina
Abstract :
It is well known that during a direct blood pressure measurement when one adds a small air bubble in a catheter-transducer system (CTS) the damping coefficient increases and the natural frequency decreases. This effect deforms the pressure waveforms. Here, the authors describe an instrument that analyses the CTS by applying a sinusoidal sweep frequency and step waveforms. Furthermore, it produces physiological and pathological waveforms for control or educational purposes
Keywords :
biomedical equipment; blood pressure measurement; damping; catheter-transducer systems; control purpose; damping coefficient; direct blood pressure measurement; educational purpose; hydraulic analyzer; natural frequency; pathological waveforms; physiological waveforms; pressure waveforms deformation; sinusoidal sweep frequency; small air bubble; step waveforms; Blood; Blood pressure; Calibration; Catheters; Computer displays; Damping; Frequency; Frequency measurement; Instruments; Keyboards; Logic; Pathology; Performance evaluation; Pressure measurement; Testing; Transducers;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.412070
