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A tether-free, moving actuator total artificial heart.

B G Min¹, H C Kim, S H Lee

¹Department of Biomedical Engineering, College of Medicine, Seoul National University, Korea.

ASAIO Transactions

|July 1, 1990

Summary

Researchers developed an electromechanical total artificial heart (TAH) using pendulum motion for improved efficiency and durability. Acute animal experiments demonstrated its engineering feasibility for potential human implantation.

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Area of Science:

Biomedical Engineering
Cardiovascular Devices

Background:

Total artificial hearts (TAHs) are crucial for end-stage heart failure treatment.
Improving TAH efficiency, durability, and anatomical fit remains a key challenge.

Purpose of the Study:

To develop and evaluate a novel electromechanical moving-actuator TAH with enhanced efficiency and durability.
To assess the in-vivo performance and anatomical feasibility of the pendulum pump TAH.

Main Methods:

Development of an electromechanical TAH utilizing pendulous motion generated by gear mechanisms.
Design features include a compact 7 cm height with central inlets/outlets for fittability.
Acute implantation and 30-minute tether-free operation in a calf model.

Main Results:

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The pendulum pump actuator demonstrated improved efficiency and durability through pendulous motion.
Active filling of blood sacs was achieved via suction effects from the actuator.
Successful 30-minute in-vivo operation in a calf confirmed engineering feasibility.

Conclusions:

The developed pendulum pump TAH shows significant engineering feasibility for implantation within a human chest cavity.
This novel design offers potential for improved TAH performance and patient outcomes.