| 摘要 |
An intracoelomic mobile body comprising: a capsule body which has a body to be rotated and can be introduced into the human body; and a rotation drive unit which has a rotation shaft for freely rotating the body to be rotated back and forth. The rotation drive unit is arranged in the capsule body in such a way that a first line obtained by linking the positions of center of gravity of cross-sections formed up to a limit of the formation when the capsule body is cut along a plane perpendicular to the rotation shaft does not overlap a second line obtained by extending the rotation shaft as the same line.
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