| 摘要 |
An insertion device comprises an insertion unit to be inserted into a subject, a spiral-shaped portion to be in contact with an inner wall of a lumen of a subject along with the insertion unit being inserted into the subject, and a rotating unit for rotating the insertion unit provided with the spiral-shaped portion. The spiral-shaped portion is partially provided in a plurality of portions in a portion to be in contact with an inner wall of a lumen of a subject, or provided across the entire portion to be in contact with the inner wall of the lumen of the subject. Propulsion at the time of inserting the insertion unit into a subject is obtained by rotating the insertion unit provided with the spiral-shaped portion.
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