World's Smallest Magnetically Levitated Artificial Heart Successfully Implanted in Chinese Child

| By:   Gad Tarabe           |  April 30, 2025

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In a pioneering medical achievement, surgeons in Wuhan, China, have successfully implanted the world's smallest magnetically levitated artificial heart into a seven-year-old boy suffering from end-stage heart failure. Weighing just 45 grams and measuring 2.9 cm in width, this innovative device is specifically designed for children and represents a paradigm shift in the treatment of pediatric heart failure.

Following a five-hour surgical procedure, the device took over the function of pumping blood, allowing the child's weakened ventricles to rest and recover. The device operates at speeds ranging from 1500 to 3600 revolutions per minute, ensuring smooth and stable blood circulation, specifically tailored for young, low-weight patients.

The development of this artificial heart took three years, a result of collaboration between doctors, engineers, and researchers. Its small size – roughly the width of a mineral water bottle cap – and light weight make it uniquely suitable for the small bodies of children. Unlike adult artificial hearts or heart transplants, every component in this device was designed to meet the specific needs of children.

The magnetic levitation technology prevents wear and tear by allowing the pump's rotor to float and spin without touching other parts. This design minimizes damage to blood cells, enhances the durability of the device, and improves overall blood flow.

As medical science advances, this remarkable artificial heart offers hope for children with limited treatment options, highlighting the transformative power of engineering in changing people's lives.


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