Nose dive microrobot

A microrobot configured to move in a viscoelastic anatomic environment along a propulsion direction, the microrobot comprising

• a body extending along a body axis,
• a navigation head extending along a head axis between a free distal tip and a proximal base the navigation head presenting a given configuration with regards to the body,
• a propulsion element extending along a propulsion axis, and presenting an external surface with a helical external thread, the external thread presenting a given configuration with regards to the body,
• driving means configured to drive the propulsion element in rotation around the propulsion axis with respect to the body,
• wherein the microrobot further comprises an orientation arrangement configured to change at least one of the given configurations of the navigation head and of the external thread with regards to the body in order to change the propulsion direction of the micro-robot.