Japanese biohybrid hand breakthrough

Researchers from the University of Tokyo and Waseda University have developed the world’s largest biohybrid robot hand, which utilises cultivated human muscle tissue to perform complex movements. The 18-centimetre hand, complete with five individually moving fingers, incorporates a novel “sushi roll” design that bundles multiple thin muscle tissue strings to ensure sufficient nutrient supply and strength. Gold electrodes are employed to stimulate the tissues, translating straight muscle contractions into the rotational motion of the joints.

This innovative Japanese device is capable of delicate tasks such as grasping small objects, although its muscle tissues exhibit a decrease in force after approximately ten minutes of continuous action, recovering fully after an hour of rest. Such a breakthrough overcomes the limitations of earlier biohybrid devices, which were restricted to single-joint movements and were much smaller due to nutrient diffusion challenges in thicker muscle constructs.

Professor Shoji Takeuchi, specialising in mechanical engineering, believes that this research paves the way for the development of humanlike robots and precision prosthetic hands. The team’s findings, published in Science Robotics, mark a significant advance in the fusion of biological elements with mechanical systems, promising a future where robotics more closely mimic the capabilities of the human body.

For more information on these topics, visit diplomacy.edu.