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Related Experiment Videos

Totally implantable ventricular assist system using a vibrating flow pump

S Nitta1, T Yambe, T Sonobe

  • 1Department of Medical Engineering and Cardiology, Tohoku University, Sendai, Japan.

Artificial Organs
|July 1, 1995
PubMed
Summary
This summary is machine-generated.

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A novel totally implantable ventricular assist system (VAS) was developed and tested in goats. This implantable artificial heart demonstrated efficient energy transmission and generated significant output, proving its potential clinical usefulness.

Area of Science:

  • Biomedical Engineering
  • Cardiovascular Devices
  • Implantable Systems

Background:

  • Ventricular assist systems (VAS) are crucial for managing heart failure.
  • Current systems often face challenges with percutaneous connections and energy supply.
  • A fully implantable solution is needed to improve patient quality of life and reduce infection risks.

Purpose of the Study:

  • To develop and evaluate a novel totally implantable ventricular assist system (VAS).
  • To assess the fluid mechanical, hemodynamic properties, and energy transmission efficiency of the new VAS.
  • To determine the safety and feasibility of the implantable system in animal models.

Main Methods:

  • Development of a VAS featuring a vibrating tube, coils, magnets, and a jellyfish valve.

Related Experiment Videos

  • Design of a new implantable transmitter using amorphous magnetic fibers for non-contact energy transfer.
  • Acute animal experiments were conducted using adult goats to evaluate system performance.

    • Main Results:

    • The vibrating electromagnetic artificial heart (AH) achieved an output volume exceeding 10 L/min at 10 Hz and 20 V.
    • The percutaneous energy transmission system demonstrated a total efficiency of 76%.
    • Observed temperature increases remained within acceptable safety limits during experiments.

    Conclusions:

    • The newly developed totally implantable VAS shows promise as a viable treatment for heart failure.
    • The system's efficient energy transmission and adequate output suggest potential for clinical application.
    • Further research and development are warranted to advance this implantable artificial heart technology.