Patent ID: 8192816

Claim:
A support coil for radial support of resiliently expanded tubing material comprising: at least one extruded profile body wound into a plurality of windings; end faces of the extruded profile body being connected to each other at least in portions in a longitudinal direction of the support coil and interlocked by a ratchet arrangement in the longitudinal direction and by a tongue and groove arrangement in a radial direction, the tongue and groove arrangement being positioned between a radial external surface and a radial internal surface of the support coil with the tongue projecting from one end face and the groove forming an opening between an opposite end face and a ratchet element of the ratchet arrangement; a rotation prevention means, through which adjacent windings are held secure against rotation; and at least one supporting body, which extends along at least two adjacent windings and which is fixed to the circumferential surface of the wound extruded profile body.