According to *Exploration* magazine in the United States, scientists from the National University of South Korea have developed a tiny robot modeled after a crab. Slightly larger than a fingernail, this miniature machine is powered by heart muscle tissue taken from a mouse. The robot's skeleton is made from a flexible, biocompatible material called polydimethylsiloxane (PDMS), which allows it to move in a lifelike manner. Researchers implanted the mouse's myocardial tissue onto the robot’s frame. As the heart muscle contracts and relaxes, it causes the robot's six legs—arranged horizontally—to open and close, propelling it forward at a speed of about 100 microns per second. Although its movement is slow, the robot has significant potential for medical applications. Scientists believe it could one day be used to clear blockages inside blood vessels, offering new hope for patients suffering from cardiovascular diseases. The design also allows the robot to function for more than 10 days, making it a promising candidate for long-term biomedical tasks. However, researchers are working on improving its speed and strength so that it can effectively navigate through the complex environment of human blood vessels. This innovation marks an exciting step forward in the field of bio-integrated robotics, blending biology with engineering in a way that could revolutionize future medical treatments.

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