Capsule Micromechanism Driven by Impulse
We have developed a traveling small capsule, which has a smooth outer surface and is driven by inertia force and friction force. Measuring only 7 mm in diameter and 12 mm in length, it is sufficiently small to be placed in the human gullet or intestines. The capsule contains a small magnet and a coil, and an electric pulse drives the magnet to move the capsule. To investigate the feasibility of our traveling capsule, we did the theoretical analysis and the computer simulation using a simple model. We performed an experimental investigation on making our capsule travel on a plastic plate. We also showed that it can travel on the surface of a pig’s intestine. Our capsule may be useful for medical treatments such as inspection, drug delivery and operation.
KeywordsCapsule Micromechanism Magnetic force Friction force
This research was supported by Grant-in-Aid for Scientific Research from Japan Society for the Promotion of Science (#20560244).
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