Via Slashgear
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The endoscope has been the go to tool for doctors that need to look
inside the digestive tract of a patient since the 1980?s. These things
are generally long, black cables that are forced through the mouth of
up the bum of people when the doctors need to check for things like
colon cancer or stomach issues. In 2008, we talked about a new
development in endoscope tools that placed the camera into a small pill shaped capsule that the person swallowed to get a look at their innards.

The problem with that camera capsule was that it could only follow
along and take photos inside the body using the muscle contractions of
the patient’s body. Some Japanese researchers have taken that endoscope
capsule to the next level and attached a small propulsion system to it
that allows the camera to swim through the digestive tract. The new
capsule has what appears to be a flagella type mechanism on the back
that uses a magnetic propulsion system.
The doctor is able to control the capsule using a joystick to get it
to take photos of whatever part of the digestive track is needed. The
device has been nicknamed “mermaid” and it would have to feel strange
moving around inside the body. It is certainly better than a four foot
long tube crammed down your throat.