Abstract: Wireless Capsule Endoscopy (WCE) is one of the most influential creations of modern science in biomedical engineering to investigate the entire Gastrointestinal (GI) tract compared to the conventional endoscopy or  colonoscopy. It is a swallow-able, non-invasive, painless and patient friendly investigation process of the interior of the human body. WCE is actually a pill shaped device embedded with a camera, a coin like battery and a data transfer. But  it takes a long time to travel the total GI tract. Because its locomotion depends only on the peristalsis of the intestine. In order to overcome this core drawback of current commercialized WCE products active locomotion is proposed as a series of strategies used to effectively navigate the device into different organs and conduct therapeutic functions within targeted human tissues. Reviews of several designs in this aspect of research will be discussed in this article.

Keywords: Wireless Capsule Endoscopy (WCE), Gastrointestinal (GI), Endoscopy, Locomotion, Colonoscopy

| DOI: 10.17148/IJIREEICE.2019.7709