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Updated: Jun 10, 2026

Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock
06:10

Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock

Published on: June 12, 2021

Optimizing the response from a passively controlled biventricular assist device.

Nicholas Richard Gaddum1, Daniel L Timms, Mark John Pearcy

  • 1School of Engineering Systems and Medical Device Domain, Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD 4059, Australia. nickgaddum@gmail.com

Artificial Organs
|July 17, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces a novel passive controller for biventricular assist devices (BiVADs) to automatically balance blood flow. The new design effectively filters pressure signals, improving cardiac support and reducing complications.

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Published on: August 16, 2021

Area of Science:

  • Biomedical Engineering
  • Cardiovascular Physiology
  • Medical Devices

Background:

  • Inadequate flow balancing in rotary biventricular assist devices (BiVADs) can cause vascular congestion and ventricular suckdown.
  • Automatic adjustment of left/right flow is crucial for optimizing physiological interaction during cardiac support.

Purpose of the Study:

  • To develop and characterize a novel passive controller for BiVADs to automatically manage hydraulic output.
  • To improve the physiological interaction between the cardiac system and the assist device.

Main Methods:

  • Development of a BiVAD prototype with a passive controller utilizing a nonrotating double pressure plate (hub).
  • The hub translates in response to pressure fluctuations, adjusting pump outputs.
  • Incorporation of a mechanical spring-mass-damper assembly to optimize dynamic interaction and filter pressure signals.

Main Results:

  • Increasing damping effectively filtered high-frequency ventricular pressure signals, reducing the amplitude ratio by up to 72%.
  • A nonlinear spring response was observed at the extremes of the floating assembly's translation range.
  • The passive controller demonstrated effective dynamic interaction with the cardiovascular system.

Conclusions:

  • The study presents a new method for passive BiVAD control.
  • Characterization of a fully passive mechanical physiological controller offers a potential solution for improved cardiac support.