These robots are the first of their kind to be able to transport and release up to four different drugs in precise, reprogrammable sequences.
A research team at Nanyang Technological University in Singapore has developed miniature, grain-sized robots capable of carrying multiple drugs and delivering them directly to targeted areas within the human body, controlled entirely by magnetic fields.
These tiny, soft robots, designed by NTU’s School of Mechanical and Aerospace Engineering, are the first of their kind to be able to transport and release up to four different drugs in precise, reprogrammable sequences., lead researcher Assistant Professor Lum Guo Zhan remarked, “What was once sci-fi is now much closer to reality. Traditional drug delivery methods like pills or injections could one day seem less efficient next to a tiny robot that delivers drugs precisely where they’re needed.
Compared to earlier models, which could carry only up to three types of drugs and could not program drug release order, the NTU robots allow for a customizable, on-demand release of medications in complex environments like the human body. The tiny robots are constructed from a blend of magnetic microparticles and polymers that are safe for the body. This unique material blend allows the robots to dexterously roll, crawl, and navigate through small, intricate spaces.
In laboratory experiments, the robots moved across sections at speeds ranging from 0.30 mm to 16.5 mm per second, successfully delivering different drugs in each section. Even in challenging environments, such as thick liquid solutions, the robots navigated efficiently, releasing drugs over an eight-hour period with minimal leakage.
Noninvasive Drug Delivery Robot
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