Scientists from the Netherlands have made a significant breakthrough in the field of medicine with the development of experimental microbots that could revolutionize the treatment of blood clots. The researchers, from Twente University and the Medical Center of the University of Radbuda, have created tiny devices, the size of a rice grain, using a 3D printer. These microbots have a screw shape and are equipped with microscopic magnets.
The microbots, known as millibots, are introduced into the affected blood vessel using a special pipe called a cannula. They are then remotely controlled and directed to the blood clot using an external magnet. Acting like a drill, the millibots penetrate the clot and destroy it from the inside.
The millibots work by utilizing an external rotating magnet. As this magnet rotates, it causes the magnetized robot case to rotate along its axis as well. This movement allows the millibot to navigate inside the blood vessel, even against the flow of blood, until it reaches the clot. Once the clot is successfully destroyed, scientists can change the direction of rotation of the external magnet to guide the millibot back to the point of entry for extraction.
The effectiveness of this technology has been demonstrated in laboratory conditions. Scientists were able to direct the millibots up and down the vessels connecting the extracted aorta and kidneys of a pig using a robotized hand with a magnet. Despite a maximum blood flow of 120 ml per minute, researchers believe that the robots will be capable of withstanding stronger currents with the use of a more powerful external magnet.
The application of millibots extends beyond the treatment of blood clots. These tiny robots have the potential to accurately deliver medicines to specific locations in the body, minimizing side effects in other parts. Islam Halil, the leading scientist and assistant professor at Twente University, explains that millibots can deliver medicines precisely where they are needed most.
The development of this promising technology is ongoing, thanks to the collaboration between the Medical Center of the University of Radbuda and Triticum Medical. This partnership is opening new horizons in the field of medical innovations.