Innovative biorobotic arm uses artificial muscles to combat tremors, paving way for wearable solutions
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It is estimated that about 80 million people worldwide live with a tremor. For example, those who live with Parkinson’s disease. The involuntary periodic movements sometimes strongly affect how patients are able to perform daily activities, such as drinking from a glass or writing.
Wearable soft robotic devices offer a potential solution to suppress such tremors. However, existing prototypes are not yet sophisticated enough to provide a real remedy.
Scientists at the Max Planck Institute for Intelligent Systems (MPI-IS), the University of Tübingen, and the University of Stuttgart under the Bionic Intelligence Tübingen Stuttgart (BITS) collaboration want to change this. The team equipped a biorobotic arm with two strands of artificial muscles strapped along the forearm.
Johns Hopkins University engineers have developed a pioneering prosthetic hand that can grip plush toys, water bottles, and other everyday objects like a human, carefully conforming and adjusting its grasp to avoid damaging or mishandling whatever it holds.
The system’s hybrid design is a first for robotic hands, which have typically been too rigid or too soft to replicate a human’s touch when handling objects of varying textures and materials. The innovation offers a promising solution for people with hand loss and could improve how robotic arms interact with their environment.
Details about the device appear in Science Advances.
In recent years, roboticists and computer scientists have developed a wide range of systems inspired by nature, particularly by humans and animals. By reproducing animal movements and behaviors, these robots could navigate real-world environments more effectively.
Researchers at Northeastern University in China recently developed a new H-shaped bionic robot that could replicate the movements that cheetahs make while running. This robot, introduced in a paper published in the Journal of Bionic Engineering, is based on piezoelectric materials, a class of materials that generate an electric charge when subjected to mechanical stress.
“The piezoelectric robot realizes linear motion, turning motion, and turning motion with different radii by the voltage differential driving method,” wrote Ying Li, Chaofeng Li and their colleagues in their paper. “A prototype with a weight of 38 g and dimensions of 150 × 80 × 31 mm3 was fabricated.”
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Advances in brain-computer interfaces enable paralysed users to feel objects in a realistic way via a robotic limb.
