Patent ID: 7365509

Claim:
A capsule type micro-robot moving system comprising: at least one limb folded when moving forward and unfolded to contact a wall of an organ when moving backward, an inner cylinder having a locking groove formed in the outer circumference thereof; a driving part for moving the inner cylinder in the longitudinal direction; an outer cylinder having a hollow part formed therein to surround the inner cylinder; at least one first exposing hole penetrating the outer circumference of the outer cylinder in the longitudinal direction; the limb hinged to the outer cylinder to rotate by a predetermined range, exposed over the first exposing hole when the limb is unfolded due to the rotation, and hided in the first exposing hole when the limb is folded due to the rotation; a capsule for surrounding the outer cylinder; and at least one second exposing hole aligned with the first exposing hole respectively and formed in the longitudinal direction of the capsule such that the limb is exposed over the capsule when the limb is unfolded; wherein the limb is folded or unfolded by the interferences between the locking groove and the limb according to the movement direction of the inner cylinder.