According to *Exploration* magazine in the United States, researchers at the National University of South Korea have developed a tiny robot modeled after a crab. The device is about the size of a fingernail and is powered by heart muscle tissue from a mouse. The scientists integrated the mouse’s myocardial tissue onto the robot's miniature skeleton. As the heart muscle contracts, the robot's six legs—arranged horizontally—fold together, while they spread apart when the muscle relaxes. This rhythmic movement generates the force needed for the robot to move at a speed of 100 microns per second. Although the robot moves slowly, researchers believe it could one day be used to clear blockages inside blood vessels, offering potential benefits for patients with cardiovascular diseases. The robot’s structure is made from a bio-elastic material called polydimethylsiloxane (PDMS), which is shaped into a specific 3D form. According to the design team, the robot can operate continuously for more than 10 days. However, scientists acknowledge that for the robot to effectively navigate through the bloodstream, it needs to be faster and more powerful. Future improvements are expected to enhance its performance and make it a viable tool for medical applications. This breakthrough represents a significant step forward in the field of bio-hybrid robotics, blending biological tissues with engineering to create new possibilities in medicine and technology.

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