Spring especially for endoscope, which has characteristics of flexibility, whilst remaining torsion-proof, has series of closed flexible elements partly connected to one another

The spring comprises a chain of a series of closed, flexible elements (2), of which always a pair of two adjacent elements from the series are partly connected with each other. In one alternative version, each pair of two adjacent elements is coupled at a predetermined, in relation to a neighbouring pair of elements, different position. In a further alternative version, each pair of two adjacent elements is coupled at a predetermined, and with respect to a neighbouring pair of elements, identical position. Independent claims are included for an endoscope in which three or more traction wires are passed through the endoscope shaft.Mechanical, Maritime and Materials Engineerin