Abstract: An insertion shaft for an electrically actuated scope includes at least two wires. Each wire has a proximal end anchored to a respective proximal anchoring point and a distal end anchored to a respective distal anchoring point. The wires are disposed around a central axis and extend along the insertion shaft. Each of the wires comprises two-way memory material configured to contract when heated to or above a first predetermined temperature and return to a predetermined original length thereof upon cooling to or below a second predetermined temperature below the first predetermined temperature. The length of each wire is larger than a length along the insertion shaft between the proximal anchoring point and the distal anchoring point to which the wire is anchored, such that each of the wires is incorporated in the insertion shaft with a predetermined slack.