The Baylor-ABI electromechanical total artificial heart. Accelerated endurance testing

Area of Science:

• Biomedical Engineering
• Cardiovascular Devices

Background:

• The development of reliable artificial hearts is crucial for managing end-stage heart failure.
• Assessing the long-term durability and performance of total artificial hearts (TAH) under stress is essential for clinical application.

Purpose of the Study:

• To evaluate the endurance and reliability of the Baylor-ABI total artificial heart (TAH) under simulated severe physiological conditions.
• To determine the impact of heat generation on the TAH's electromechanical components during prolonged operation.

Main Methods:

• An accelerated endurance test was conducted by immersing the TAH in a 42°C saline bath for nearly four months.
• Continuous monitoring of motor and centerpiece surface temperatures, voltage, and current was performed during TAH operation.

Main Results:

• No electromechanical failures or troubles were observed during the entire 4-month testing period.
• Stable internal and external temperatures were recorded, with a minimal 3-4°C difference, indicating effective heat management.
• Consistent voltage and current readings demonstrated stable and reliable performance throughout the test.

Conclusions:

• The Baylor-ABI TAH exhibits robust durability and reliable performance, even under accelerated testing conditions.
• The findings suggest the TAH is suitable for continuous, long-duration operation in a physiological environment.
• The accelerated endurance test system effectively validates the thermal performance and durability of blood pump actuators and cardiac prostheses.