Related Experiment Videos
A moving-actuator type electromechanical total artificial heart--Part I: Linear type and mock circulation experiments
1Department of Biomedical Engineering, College of Medicine, Seoul National University, Korea.
IEEE Transactions on Bio-Medical Engineering
|December 1, 1990
Summary
A novel motor-driven total artificial heart with a moving-actuator mechanism offers a smaller, lighter design. Mock circulation tests show it meets key performance and control requirements for artificial heart systems.
Area of Science:
- Biomedical Engineering
- Cardiovascular Devices
- Mechanical Engineering
Background:
- Total artificial hearts (TAHs) are crucial for end-stage heart failure treatment.
- Existing TAHs face challenges in size, weight, and efficiency.
- Motor-driven pumps offer potential for improved TAH performance.
Purpose of the Study:
- To develop and evaluate a novel motor-driven TAH system.
- To assess the performance of a moving-actuator mechanism in an artificial heart.
- To confirm the system meets essential artificial heart control requirements.
Main Methods:
- A prototype TAH system was designed using a brushless DC motor, rolling-cylinder, pusher-plates, and polyurethane sacs.
- The system employed a moving-actuator electromechanical pump design.
- Mock circulation tests were conducted to evaluate performance.
Main Results:
- The prototype TAH demonstrated a cardiac output of 9 L/min at 120 mmHg aortic pressure and 120 bpm heart rate.
- The system exhibited preload-sensitive and afterload-insensitive cardiac output response.
- Balanced output between the right and left ventricles was confirmed.
Conclusions:
- The developed moving-actuator TAH system presents structural advantages in size and weight.
- The prototype successfully met critical performance and control criteria for artificial hearts.
- This novel design shows promise for future TAH applications.