Vein Crawling Robots

While the thought of a robot crawling through your vein's may seem like the stuff of horror stories, in the near future it may be regarded as advance medicine. The millimeter wide medical robot was developed at Technion University (Israel) to roam through your circulatory system looking for problems.

Video embedded below. (from http://www.popsci.com/scitech/article/2009-07/robot-will-crawl-through-your-veins)