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A novel passive left heart platform for device testing and research.

A M Leopaldi1, R Vismara2, S van Tuijl3

  • 1Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands; Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milano, Italy; LifeTec Group, Cardiovascular Department, Eindhoven, The Netherlands.

Medical Engineering & Physics
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Summary

This study presents an innovative in vitro heart simulator that accurately replicates physiological hemodynamics. The platform effectively assesses cardiovascular devices and procedures, enabling detailed visualization of heart valve function.

Keywords:
Heart valvesHemodynamicsIn vitroLVADMock circulatory loop

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Research
  • Medical Device Technology

Background:

  • In vitro mock loops are crucial for testing cardiovascular devices under realistic conditions.
  • Accurate simulation of cardiac function is essential for device development and procedural planning.

Purpose of the Study:

  • To develop and validate an in vitro platform simulating the heart's pumping function for hemodynamic assessment.
  • To evaluate the platform's capability in simulating device integration and visualizing intracardiac procedures.

Main Methods:

  • Developed an external ventricular pressurization system within a fluid-filled chamber.
  • Integrated a systemic impedance simulator and adjustable preload system.
  • Connected a left ventricular assist device (LVAD) for pilot testing and valve visualization.

Main Results:

  • The platform successfully reproduced physiological hemodynamics (120/80 mmHg, 5 L/min cardiac output).
  • Intracardiac endoscopy enabled visualization of aortic valve function under varying LVAD support.
  • Pilot study results aligned with existing literature, demonstrating system efficacy.

Conclusions:

  • The developed in vitro system is an effective tool for hemodynamic assessment of medical devices.
  • The platform facilitates simulation of surgical and transcatheter procedures.
  • It provides valuable visualization capabilities for intracardiac components and their function.