Arterial pressure wave generator based on closed-loopcontrol:design and characterization

LEONARDO CASAL; ALEJANDRO MAZZADI

Córdoba

Congreso; XXI Congreso Argentino de Bioingeniería; 2017

Sociedad Argentina de Bioingeniería

Abstract?We present the design and performance evaluation of a pneumaticwave pressure generator to be used in a device based on the volume-clamp method,for measuring arterial wave pressure non-invasively at the finger.Objective.To developand test a generator able to reproduce differentarterial pressure waveswith a heart frequency up to 120bpmand a wide range of systolic and diastolic pressures.Methods and Results.The devicewe implemented is based on a compressor, a proportionalvalve and a control. We measuredoutput pressureatopen loop and closed loop response. Conclusions: This characterization allowed us to implement a controller that: 1)compensates the pressure wave generator?s non-linearityand 2) makes it respond withgood velocity and reproducibility inhuman diastolic/systolic pressure ranges.