Medical micro/nanorobots in complex media.

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Robotics

Background:

• Medical micro/nanorobots offer potential for targeted drug delivery, bio-isolation, detoxification, and nanosurgery in hard-to-reach tissues.
• Current research often overlooks the complexities of biological environments, such as blood and mucus, which differ significantly from controlled lab conditions.
• Propulsion mechanisms developed for homogeneous media may not be effective in the heterogeneous and non-Newtonian nature of biological fluids.

Purpose of the Study:

• To review recent research on how biological environment complexities affect micro/nanorobot propulsion.
• To highlight emerging technologies that enhance micro/nanorobot locomotion in challenging biological settings.
• To introduce recent in vivo demonstrations of imaging, control, and therapeutic applications of medical micro/nanorobots.

Main Methods:

• Literature review of studies investigating micro/nanorobot propulsion in complex biological media.
• Analysis of technological advancements for improving micro/nanorobot locomotion.
• Summary of recent in vivo applications and demonstrations.

Main Results:

• Biological environments present significant challenges to micro/nanorobot propulsion due to their complexity and non-Newtonian properties.
• New propulsion strategies and materials are being developed to overcome these limitations.
• Successful in vivo demonstrations show the potential for medical applications, though further advancements are needed.

Conclusions:

• Overcoming challenges in complex biological environments is crucial for the clinical translation of medical micro/nanorobots.
• Continued interdisciplinary innovation in materials and technology is essential for realizing the full potential of micro/nanorobotics in medicine.
• The development of micro/nanorobots promises future medical interventions, akin to 'swallowing a surgeon'.