Related Experiment Videos
A new automatic cardiac output control algorithm for moving actuator total artificial heart by motor current waveform
The International Journal of Artificial Organs
|March 1, 1996
Summary
A novel sensorless algorithm for total artificial hearts (TAH) controls cardiac output by analyzing motor current, eliminating unreliable sensors. This innovation ensures adequate blood flow without critical complications like right atrial collapse.
Area of Science:
- Biomedical Engineering
- Medical Devices
- Artificial Organs
Background:
- Traditional artificial heart control relies on sensors, posing reliability challenges.
- Achieving adequate cardiac output while preventing right atrial collapse is crucial for active filling devices.
Purpose of the Study:
- To develop a sensorless automatic cardiac output control algorithm for an implantable electromechanical total artificial heart (TAH).
- To address the limitations of transducer-based systems in artificial heart control.
Main Methods:
- Developed a novel automatic cardiac output control algorithm (ACOCA) analyzing motor current waveform.
- Utilized in vitro tests on a mock circulatory system to evaluate algorithm performance.
Main Results:
- The sensorless algorithm demonstrated preload sensitivity and afterload insensitivity.
- The system provided adequate cardiac output, meeting physiological demands without causing right atrial collapse.
- Results confirmed the algorithm's ability to satisfy basic cardiac output control requirements.
Conclusions:
- The developed sensorless algorithm offers a reliable method for automatic cardiac output control in TAH.
- This approach overcomes the sensor reliability issues inherent in previous TAH control systems.
- The ACOCA shows promise for improving the functionality and safety of implantable artificial hearts.